145. A novel polytype - the stacking fault based γ-MoO3 nanobelts. Slawinski, Wojciech A.; Fjellvåg, Øystein S.; Ruud, Amund; Fjellvåg, Helmer. Acta Crystallographica, Section B: (2016), 72(2), 201-208.
144. Rh promoted La0.75Sr0.25(Fe0.8Co0.2)1-xGaxO3- perovskite catalysts: Characterization and catalytic performance for methane partial oxidation to synthesis gas. Palcheva, Radostina Dimitrova; Olsbye, Unni; Palcut, Marian; Rauwel, Protima; Tyuliev, Georgi T.; Velinov, Nikolay I.; Fjellvåg, Helmer. Applied Surface Science 2015 ;Volum 357. s.45-54.
143. Structural and magnetic aspects of La4(Co1-xNix)3O10+d (0 ≤ x ≤ 1). Nagell, Marius Uv; Kumar, Susmit; Sørby, Magnus Helgerud; Fjellvåg, Helmer; Sjåstad, Anja Olafsen. Phase Transitions 2015 ;Volum 88.(10) s.979-990.
142. Observation of direct magneto-dielectric behaviour in Lu3Fe5O12 above room-temperature.
Manimuthu, P.; Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer; Venkateswaran, C. Physical Chemistry, Chemical Physics - PCCP 2015 Volum 17.(27) s.17688-17698
141. Atomic layer deposited hybrid organic-inorganic aluminates as potential low-k dielectric materials. Klepper, Karina Barnholt; Miikkulainen, Ville; Fjellvåg, Helmer; Ming, Liu; Dhanadeep, Dutta; David, Gidey; William, Lanford; Rozz, Liza; Li, Han; King, Sean W. Materials Research Society Symposium Proceedings 2015 ;Volum 1719. s.1-6.
140. Structural and electronic properties of transparent conducting delafossite: a comparison between the AgBO2 and CuBO2 families (B = Al, Ga, In and Sc, Y). Iozzi, Maria Francesca; Vajeeston, Ponniah; Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer. RSC Advances 2015 ;Volum 5.(2) s.1366-
139. Thin film fabrication and characterization of proton conducting lanthanum tungstate. Bergum, Kristin; Magraso, Anna; Fjellvåg, Helmer; Nilsen, Ola. Journal of Materials Chemistry A 2014 ;Volum 2.(43).18463-18471.
138. Thickness dependent structural, optical and electrical properties of Ti-doped ZnO films prepared by atomic layer deposition. Bergum, Kristin; Fjellvåg, Helmer; Nilsen, Ola. Applied Surface Science 2015 ;Volum 332. s.494-499.
137. Structural, electrical and optical characterization of Ti-doped ZnO films grown by atomic layer deposition. Bergum, Kristin; Hansen, Per-Anders; Fjellvåg, Helmer; Nilsen, Ola. Journal of Alloys and Compounds 2014 Volum 616. s.618-624.
136. Complex Magnetic Behavior in the PrSr3(Fe1–xCox)3O10 n = 3 Ruddlesden–Popper-Type Solid Solution with High Valent Cobalt and Iron. Jantsky, Laurent; Okamoto, Hiroshi; Thomas, Michael; Karen, Pavel; Hauback, Bjørn; Rosseinsky, Matthew J; Fjellvåg, Helmer. Chemistry of Materials 2014 ;Volum 26.(2) s.886-897.
135. Ab-initio studies on Li doping, Li-pairs, and complexes between Li and intrinsic defects in ZnO. Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer. Journal of Applied Physics 2012;Volum 111.(12) s
134. Enthalpy of formation of Ln2O2CO3 II (Ln = La, Nd, Eu) and thermodynamics of decomposition equilibria. Sjåstad, Anja Olafsen; Fjellvåg, Helmer; Helean, K.B.; Navrotsky, A. Thermochimica Acta 2012 ;Volum 550. s. 76-82.
133. Unusual Photoluminescence of CaHfO3 and SrHfO3 Nanoparticles. Rauwel, Erwan Yann; Galeckas, Augustinas; Rauwel, Protima; Fjellvåg, Helmer. Advanced Functional Materials 2012 ;Volum 22.(6) s. 1174-1179.
132. Tuning of Water and Hydroxide Content of Intercalated Ruddlesden-Popper-type Oxides in the PrSr3Co1.5Fe1.5O10-d System. Jantsky, Laurent; Okamoto, Hiroshi; Demont, Antoine; Fjellvåg, Helmer. Inorganic Chemistry 2012 ;Volum 51.(17) s. 9181-9191.
131. NdHO, a novel oxyhydride. Widerøe, Marius; Fjellvåg, Helmer; Norby, Truls; Poulsen, Finn Willy; Berg, Rolf Willestofte. Journal of Solid State Chemistry 2011 ;Volum 184.(7) s.1890-1894.
130. Structure, Water Uptake, and Electrical Conductivity of TiP2O7. Vajeeston, Nalini; Sørby, Magnus Helgerud; Amezawa, Koji; Haugsrud, Reidar; Fjellvåg, Helmer; Norby, Truls. Journal of The American Ceramic Society 2011; Volum 94.(5) s.1514-1522.
129. Precursor-Dependent Blue-Green Photoluminescence Emission of ZnO Nanoparticles. Rauwel, Erwan Yann; Galeckas, Augustinas; Rauwel, Protima; Sunding, Martin Fleissner; Fjellvåg, Helmer. The Journal of Physical Chemistry C 2011 ;Volum 115.(51) s.25227-25233.
128. Thermodynamic Control of Product Formation During the Reaction Between CH4 and Pt Promoted Ceria-zirconia Solid Solutions. Mudu, Federica; Arstad, Bjørnar; Fjellvåg, Helmer; Olsbye, Unni. Catalysis Letters 2011; Volum 141.(1) s.8-14.
127. Investigation of bixbyite type scandium oxides involving a magnetic cation: Sc2-xFexO3. Breard, Yohann Patrice L; Fjellvåg, Helmer; Hauback, Bjørn. Solid State Communications 2011; 151.(3) s.223-226.
126. Synthesis, structure and magnetic properties of nanocrystalline YMnO3. Bergum, Kristin; Okamoto, Hiroshi; Fjellvåg, Helmer; Grande, Tor; Einarsrud, Mari-Ann; Selbach, Sverre Magnus. Dalton Transactions 2011 ;Volum 40.(29) s.7583-7589.
125. Energetics of intrinsic defects and their complexes in ZnO investigated by densityfunctional calculations. Vidya, R.; Ravindran, P.; Fjellvåg, H.; Svensson, B. G.; Monakhov, E.; Ganchenkova, M.; Nieminen, R. M. Physical Review B: Physics (2011), 83(4), 045206/1-045206/12.
124. Perovskite-type oxide catalysts for low temperature, anaerobic catalytic partial oxidation of methane to syngas. Mudu, Federica; Arstad, Bjørnar; Bakken, Egil; Fjellvåg, Helmer; Olsbye, Unni. Journal of Catalysis 2010 ;Volum 275.(1) s. 25-33.
123. Square Coordinated MnO2-Units in BiMn7O12. Okamoto, Hiroshi; Imamura, N.; Karppinen,
Maarit; Yamauchi, Hisao; Fjellvåg, Helmer. Inorganic Chemistry 2010 ;Volum 49.(19) s. 8709-8712.
122. Crystal structure of the monoclinic and cubic polymorphs of BiMn7O12. Okamoto, Hiroshi;
Imamura, N.; Karppinen, Maarit; Yamauchi, Hisao; Fjellvåg, Helmer. J. Sol State Chem. 2010 ; 183,186-191.
121. Temperature dependant X-ray diffraction study of PrSr3Co1.5Fe1.5O10-d; n=3 Ruddlesden-Popper phase. Jantsky, Laurent Sébastien Béla; Norby, Poul; Rosseinsky, Matthew J; Fjellvåg, Helmer. Zeitschrift fur Kristallographie 2009, 224.(5-6), 295-301.
120. Electronic structure and optical properties of ZnSiO3 and Zn2SiO4. Karazhanov, Smagul; Ravindran, Ponniah; Fjellvåg, Helmer; Svensson, Bengt G. J.Appl. Phys. 2009, 106(12),123701/1-7.
119. In situ studies of structural stability and proton conductivity of titanate nanotubes. Gao, Tao; Fjeld, Harald; Fjellvåg, Helmer; Norby, Truls; Norby, Poul. Energy & Environmental Science (2009); 2(5), 517-523.
118. A comparison study on Raman scattering properties of alpha- and beta-MnO2. Gao, Tao; Fjellvåg, Helmer; Norby, Poul. Analytica Chimica Acta (2009); 648(2), 235-239.
117. Defect Chemistry of a Zinc-Doped Lepidocrocite Titanate CsxTi2-x/2Znx/2O4 (x=0.7) and its
Protonic Form. Gao, Tao; Fjellvåg, Helmer; Norby, Poul. Chem of Materials 2009, 21(15), 3503-13.
116. Microstructures, Surface Properties, and Topotactic Transitions of Manganite Nanorods.
Gao, Tao; Krumeich, F; Nesper, Reinhard; Fjellvåg, Helmer; Norby, Poul. Inorganic Chemistry 2009, 48 (13), 6242-50.
115. Synthesis and Properties of Layered-Structured Mn5O8 Nanorods. Gao, Tao; Norby, Poul; Krumeich, F; Okamoto, Hiroshi; Nesper, Reinhard; Fjellvåg, Helmer. The Journal of Physical Chemistry C 2010, 114.(2) s. 922-928.
114. Syntheses, Structures, and Magnetic Properties of Nickel-Doped Lepidocrocite Titanates.
Gao, Tao; Norby, Poul; Okamoto, Hiroshi; Fjellvåg, Helmer. Inorganic Chemistry 2009 48.(19), 9409-9418.
113. Influence ogf annealing on the Al2O3/4H-SiC interface. Grossner, Ulrike; Avice, Marc Jean Lucien; Diplas, Spyros; Thøgersen, Annett; Christensen, Jens S.; Svensson, Bengt Gunnar; Nilsen, Ola; Fjellvåg, Helmer; Watts, John F. Materials Science Forum 2009, 600-603, 767-770.
112. High-temperature synchrotron X-ray diffraction study of LaMn7O12. Okamoto, Hiroshi; Karppinen, M; Yamauchi, H; Fjellvåg, Helmer. Solid State Sciences (2009); 11.(7),1211-1215.
111. Growth of La1-xSrxFeO3 thin films by atomic layer deposition. Lie Martin; Nilsen Ola;Fjellvåg Helmer; Kjekshus Arne. Dalton transactions (2009), (3), 481-9.
110. Crystal structure and magnetic properties of the solid-solution phase Ca3Co2-vMnvO6. Hervoches, C. H.; Okamoto, H.; Kjekshus, A.; Fjellvåg, H.; Hauback, B. C. Journal of Solid State Chemistry (2009), 182(2), 331-338.
109. Crystal Structures of Titanate Nanotubes: A Raman Scattering Study. Gao, Tao; Fjellvåg, Helmer; Norby, Poul. Inorganic Chemistry (2009), 48(4), 1423-1432.
108. Protonic titanate derived from CsxTi2-x/2Mgx/2O4 (x = 0.7) with lepidocrocite-type layered structure. Gao, Tao; Fjellvåg, Helmer; Norby, Poul. J. Materials Chemistry (2009), 19(6), 787-794.
107. Structural and morphological evolution of beta-MnO2 nanorods during hydrothermal synthesis. Gao Tao; Fjellvåg Helmer; Norby Poul. Nanotechnology (2009), 20(5), 55610.
106. Density functional theory studies of spin, charge, and orbital ordering in YBaT2O5 (T = Mn, Fe, Co). Vidya R; Ravindran P; Knizek K; Kjekshus A; Fjellvåg H. Inorganic chemistry (2008), 47(15), 6608-20.
105. Reply to "Comment on Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11' ". Ravindran, P.; Vidya, R.; Fjellvåg, H.; Kjekshus, A. Physical Review B: (2008), 77(13), 136402/1-136402/4.
104. Microstructures and Spectroscopic Properties of Cryptomelane-type Manganese Dioxide Nanofibers. Gao, Tao; Glerup, Marianne; Krumeich, Frank; Nesper, Reinhard; Fjellvåg, Helmer; Norby, Poul. Journal of Physical Chemistry C (2008), 112(34), 13134-13140.
103. Topological Properties of Titanate Nanotubes. Gao, Tao; Wu, Qinglan; Fjellvåg, Helmer; Norby, Poul. Journal of Physical Chemistry C (2008), 112(23), 8548-8552.
102. Raman scattering properties of a protonic titanate HxTi2-x/4[]x/4O4.H2O ([], vacancy; x=0.7) with lepidocrocite-type layered structure. Gao Tao; Fjellvåg Helmer; Norby Poul. Journal of physical chemistry B (2008), 112(31), 9400-5.
101. Neutron powder diffraction study of crystal and magnetic structures of orthorhombic LuMnO3. Okamoto, H.; Imamura, N.; Hauback, B. C.; Karppinen, M.; Yamauchi, H.; Fjellvåg, H. Solid State Communications (2008), 146(3-4), 152-156.
100. Magnetic-instability-induced giant magnetoelectric coupling. Ravindran, Ponniah; Vidya, Ravindran; Eriksson, Olle; Fjellvåg, Helmer Advanced Materials (2008), 20(7), 1353-1356.
99. Validity of bond-length and Mossbauer parameters to assign oxidation states in multicomponent oxides: Case study of Sr4Fe4O11. Ravindran, P.; Vidya, R.; Fjellvåg, H; Kjekshus, A. Physical Review B: Condensed Matter and Materials Physics (2008), 77(13), 134448/1-134448/13.
98. Interfacial studies of Al2O3 deposited on 4H-SiC(0001). Diplas, Spyros; Avice, Marc; Thoegersen, Annett; Christensen, Jens S.; Grossner, Ulrike; Svensson, Bengt G.; Nilsen, Ola Fjellvåg, Helmer; Hinder, Steve; Watts, John F. Surface and Interface Analysis (2008), 40(3-4), 822-825.
97. Uncommon oxygen intake/release capability of layered cobalt oxides, REBaCo4O7+ : Novel oxygen-storage materials. Motohashi, T.; Kadota, S.; Fjellvåg, H.; Karppinen, M.; Yamauchi, H. Materials Science & Engineering, B: (2008),148(1-3),196-198.
96. Spin, charge, and orbital ordering in RBaMn2O5+ (R=Y, La; 0 1) and their dependence on oxygen content and size of the R constituent. Vidya, R.; Ravindran, P.; Kjekshus, A.; Fjellvåg, H. Physical Review B: Condensed Matter and Materials Physics (2007), 76(19), 195114/1-195114/14.
95. Growth of La1-xCaxMnO3 thin films by atomic layer deposition. Nilsen, Ola; Rauwel, E; Fjellvåg, Helmer; Kjekshus, Arne. Journal of Materials Chemistry 2007;17.
94. Synthesis of epitaxial BiFeO3 films by chemical solution deposition on Pt(100). Tyholdt, Frode; Fjellvåg, Helmer; Gunnæs, Anette Eleonora; Olsen, Arne. Journal of Applied Physics 2007;10293.
93. Growth of oxides with complex stoichiometry by the ALD technique, exemplified by growth of La1-xCaxMnO3. Nilsen, Ola; Lie, M; Fjellvåg, Helmer; Kjekshus, Arne. Topics in applied physics 2007;106.
92. Phase stability, electronic structure, and optical properties of indium oxide polytypes. Karazhanov, Smagul; Ravindran, Ponniah; Vajeeston, Ponniah; Ulyashin, A; Finstad, Terje; Fjellvåg, Helmer. Physical Review B. Condensed Matter and Materials Physics 2007;76(7).
91. Electronic structure and optical properties of ZnX (X=O, S, Se, Te): A density functional study. Karazhanov, S. Zh.; Ravindran, P.; Kjekshus, A.; Fjellvåg, H.; Svensson, B. G Physical Review B: Condensed Matter and Materials Physics (2007), 75(15), 155104/1-155104/14.
90. Structure and magnetism of rare-earth-substituted Ca3Co2O6. Hervoches, Charles; Fjellvåg, Helmer; Kjekshus, Arne; Fredenborg, Vivian Miksch; Hauback, Bjørn. J. Solid State Chem.2007;180
89. From a 3D protonic conductor VO(H2PO4)2 to a 2D cationic conductor Li4VO(PO4)2 through lithium exchange. Caignaert, V; Kishore, MS; Pralong, V; Raveau, B; Creon, N; Fjellvåg, Helmer. J. Solid State Chem.2007;180
88. Electronic structure and band parameters for ZnX (X = O, S, Se, Te). Karazhanov, S. Zh.; Ravindran, P.; Kjekhus, A.; Fjellvåg, H.; Grossner, U.; Svensson, B. G. Journal of Crystal Growth (2006), 287(1), 162-168.
87. Highly cation-deficient manganese perovskite, La1-xMn1-yO3 with x=y. Okamoto, H.; Fjellvåg, H.; Yamauchi, H.; Karppinen, M. Solid State Communications, 2006, 137(10), 522-527.
86. Hole doping into Co-12s2 copper oxides with s fluorite-structured layers between CuO2 planes. Fjellvåg, H.; Morita, Y.; Nagai, T.; Lee, J.-M.; Chen, J.-M.; Liu, R.-S.; Hauback, B. C.; Awana, V. P. S.; Matsui, Y.; Yamauchi, H.; Karppinen, M. Journal of Solid State Chemistry (2006), 179(3), 632-645.
85. Structure and physical properties of YCoO3 at temperatures up to 1000 K. Knizek, K.; Jirak, Z.; Hejtmanek, J.; Veverka, M.; Marysko, M.; Hauback, B. C.; Fjellvåg, H. Physical Review B: (2006, 73(21), 214443/1-6.
84. Strong Coulomb correlation effects in ZnO. Karazhanov, S. Zh.; Ravindran, P.; Grossner, U.; Kjekshus, A.; Fjellvåg, H.; Svensson, B. G. Solid State Communications (2006), 139(8), 391-396.
83. Hole doping into the metastable LuMnO3 perovskite. Imamura, N.; Karppinen, M.; Fjellvåg, H.; Yamauchi, H. Solid State Communications 2006, 140(7-8), 386-390.
82. Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11. Vidya, R.; Ravindran, P.; Fjellvåg, H.; Kjekshus, A. Physical Review B: 2006, 74(5), 054422/1-10.
81. Synthesis of Oriented BiFeO3 thin films by chemical solution deposition: Phase, texture, and microstructural development. Tyholdt, Frode; Gunnæs, Anette Eleonora; Jørgensen, Sissel; Fjellvåg, Helmer. J. Mater. Research 2005;20(8):2127-2139.
80. Structural stability, electronic structure, and magnetic properties of mixed-valence ACr3O8 phases (A=Na, K, Rb). Vidya, Ravindran; Ravindran, Ponniah; Vajeeston, Ponniah; Fjellvåg, Helmer; Kjekshus, Arne. Physical Review B 2005;7227.
79. Electrical properties of aluminum oxide films grown by atomic layer deposition on n-type 4H-SiC. Avice, Marc Jean Lucien; Grossner, Ulrike; Monakhov, Edouard; Grillenberger, Joachim K; Nilsen, Ola; Fjellvåg, Helmer; Svensson, Bengt Gunnar. Materials Science Forum 2005;483:705-708
78. Electronic Structure and Excited-state Properties of Perovskite-like Oxides. Ravindran, P.; Vidya, R.; Fjellvåg, H.; Kjekshus, A. Journal of Crystal Growth (2004), 268(3-4), 554-559.
77. Spin, charge, and orbital orderings in oxides with dual-valent transition metal ions. Vidya, R.; Ravindran, P.; Vajeeston, P.; Fjellvåg, H.; Kjekshus, A. Ceramics International (2004), 30(7), 1993-1998.
76. Evidence for Oxygen Vacancies in Misfit-Layered Calcium Cobalt Oxide, [CoCa2O3]qCoO2. Karppinen, M.; Fjellvg, H.; Konno, T.; Morita, Y.; Motohashi, T.; Yamauchi, H. Chemistry of Materials (2004), 16(14), 2790-2793.
75. Huge magneto-optical effects in half-metallic double perovskites. Vidya, R.; Ravindran, P.; Kjekshus, A.; Fjellvåg, H. Physical Review B: (2004), 70(18), 184414/1-184414/7.
74. Divalent manganese in reduced LaMnO3--effect of oxygen nonstoichiometry on structural and magnetic properties. Hansteen, Ole H.; Breard, Yohann; Fjellvåg, Helmer; Hauback, Bjorn C. Solid State Sciences (2004), 6(3), 279-285.
73. Effect of oxygen stoichiometry on spin, charge, and orbital ordering in manganites. Vidya, R.; Ravindran, P.; Vajeeston, P.; Kjekshus, A.; Fjellvåg, H. Physical Review B: 2004), 69(9), 092405/1-092405/4.
72. Oxygen and cation ordered perovskite, Ba2Y2Mn4O11. Karppinen, M.; Okamoto, H.; Fjellvåg, H.; Motohashi, T.; Yamauchi, H. Journal of Solid State Chemistry (2004), 177(6), 2122-2128.
71. Magnetic properties of Ca-doped SrRuO3 from full-potential calculations., Vidya, R.; Ravindran, P.; Kjekshus, A.; Fjellvåg, H.; Hauback, B. C. Journal of Solid State Chemistry (2004), 177(1), 146-158.
70. Tailor-Made Electronic and Magnetic Properties in One-Dimensional Pure and Y-Substituted Ca3Co2O6. Vidya, R.; Ravindran, P.; Fjellvåg, H.; Kjekshus, A.; Eriksson, O. Physical Review Letters (2003), 91(18), 186404/1-186404/4.
69. Ground- and excited-state properties of inorganic solids from full-potential density-functional calculations. Ravindran, P.; Vidya, R.; Vajeeston, P.; Kjekshus, A.; Fjellvåg, H. Journal of Solid State Chemistry (2003), 176(2), 338-374.
68. Nanocrystalline orthoferrite GdFeO3 from a novel heterobimetallic precursor, Mathur, S.; Shen, H.; Lecerf, N.; Kjekshus, A.; Fjellvåg, H.; Goya, G.o F. Advanced Materials (2002), 14(19), 1405-1409.
67. Structural aspects of Pr1-xSrxFeO3-w. Stange, M.; Linden, J.; Kjekshus, A.; Binsted, N.; Weller, M. T.; Hauback, B. C.; Fjellvåg, H. Journal of Solid State Chemistry (2003), 173(1), 148-163.
66. Antiferromagnetic vs. ferromagnetic interactions and spin-glass-like behavior in ruthenates. Ravindran, P.; Vidya, R.; Vajeeston, P.; Kjekshus, A.; Fjellvåg, H.; Hauback, B. C. Solid State Communications (2002), 124(8), 293-298.
65. Ground state and excited state properties of LaMnO3 from full-potential calculation Ravindran, P, Kjekshus, A. Fjellvåg, H. Delin A. and Eriksson, O. Phys. Rev. B. 65 (6) art.no. 064445.
64. Spin, charge and orbital ordering in ferrimagnetic insulator YBaMn2O5. Vidya, R., Ravindran, P., Kjekshus, A. and Fjellvåg, H. Phys. Rev. B.65 (14) art.no. 144422.
63. Monoclinic nearly stoichiometric wüstite at low temperatures. Fjellvåg, H., Hauback, B. C., Vogt, T. and Stølen, S. Am. Mineral. 87 (2002) 347-349.
62. Fast time-resolved in-situ powder diffraction studies of high-temperature oxidation/reduction reactions. Norby, P. Fjellvåg, H. and Emerich, H., ESRF Highlights 2001, 88-89.
61. Itinerent Metamagnetism and Possible Spin Transition in LaCoO3 by temperature/Hole Doping. Ravindran, P., Fjellvåg, H., Kjekshus, A., Blaha. P., Schwarz, K. and Luitz, J. J. of Appl. Phys.. 91 (2001) 291-303.
60. Crystal and magnetic structure of orthorhombic HoMnO3. Brinks, H. W., Rodríguez-Carjaval, J., Fjellvåg, H., Kjekshus, A. and Hauback, B. C. Phys. Rev. B 6309 (2001) 4411-
59. Synthesis and characterization of molybdenum(VI) oxide sulfates and crystal structure of two polymorphs of MoO2(SO4), Christiansen, A. F., Fjellvåg, H., Kjekshus, A. and Klewe, B. J. Chem. Soc., Dalton Trans. 6 (2001) 806-15.
60. Application of combined EXAFS and powder diffraction analysis in solid state chemistry, On the Crystal Structure of Ln2O2CO3-II (Ln = La and Nd). Olafsen, A., Fjellvåg, H., B. C. Hauback, A. Olsen and A. K. Larsson J. Solid State Chem. 158 (2001) 14-24.
59. Application of combined EXAFS and powder diffraction analysis in solid state chemistry. Binsted, N., Stange, M., Owens, C., Fjellvåg, H. and Weller, M.T. J. Synch. Rad. 8 (2001) 305-7.
58. Water-containing phases derived from ”=2(n-1)n” superconductors. I. Novel =2(n-1)n homologous series in the Ba-Ca-Cu-O system and derivative series. Yamauchi, H., Karppinen, M. Hosomi, T. and Fjellvåg, H. Physica C 338 (2000) 38-45.
57. Structural Deformation and Non-Stoichiometry of La4Co3O10+. Fjellvåg, H., Hansteen, O. H., Hauback, B. C. and Fischer, P. J. Mater. Chem.10 (2000) 749-754.
56. Crystal Structure and Properties of Nd4Co3O10+ and Nd4Ni3O10+. Olafsen, A., Fjellvåg, H. and B. C. Hauback, J. Solid State Chem. 151 (2000) 46-55.
55. Structure and magnetism of Pr1-xSrxFeO3. Brinks, H. W., Fjellvåg, H. , Kjekshus, A. and Hauback, B. C. J. Solid State Chem. 150 (2000) 233-249.
54. Equation of state of magnetite and its high-pressure modification. Thermodynamics of the Fe-O system at high pressure. Haavik, C., Stølen, S., Fjellvåg, H., Hanfland, M. and Hausermann, D. Am. Mineral. 85 (2000) 514-523.
53. Nd-substitution effects in YBa2Cu4O8 prepared by a conversion reaction of Y1-xNdxBa2Cu3O7- and CuO. Valo, J., Leskelä, M., Hauback, B. C., Fjellvåg, H. and Rao, K. V. Inter.Journal of Inorg. Mat. 2 (2000) 269-276.
52. Electronic Structure, Phase Stability and Magnetic Properties of LaxSr1-xCoO3 from First Principles Full Potential Calculations. Ravindran, P., Korzhavyi, P. A., Fjellvåg, H. and Kjekshus, A. Phys. Rev. B 60 (2000) 16423-16434.
51. Structure and magnetism of Pr1-xSrxCoO3. Brinks, H. W., Fjellvåg, H. , Kjekshus, A. and Hauback, B. C. J. Solid State Chem. 147 (1999) 464-477.
50. Investigation of an Unstable Tc = 126 K Phase and its Derivative Phase in the Ba-Ca-Cu-O System. Hosomi, T., Suematsu, H., Fjellvåg, H., Matsui, Y., Tomokiyo, Y., Karppinen, M. and Yamauchi, H. Advances in Superconductivity XI, N. Koshizuka and S. Tajima (Eds). Springer, Tokyo 1999).
49. Superconducting cuprates with charge reservoir consisting of either peroxide-type oxygen or H2O. Karppinen, M. Yamauchi, H., Hosomi, T., Suematsu, H. and Fjellvåg, H. J. Low-Temp- Phys. 117 (1999) 843-847.
48. Synthesis of rare Earth Oxide Carbonates and Thermal Stability of Nd2O2CO3-II. Olafsen, A. and Fjellvåg, H. J Mater. Chem. 9 (1999) 2697-2702.
47. Identification of Superconducting Phases in the Ba-Ca-Cu-O system: an Unstable Phase with Tc = 126 K and its Derivative with Tc = 90 K. Hosomi, T., Suematsu, H., Fjellvåg, H., Karppinen, M. and Yamauchi, H. J. Mater. Chem. 9 (1999) 1141 – 1148.
46. Heat capacity and entropy of La2O2CO3 from T = (12 to 300 K) and of Nd2O2CO3 from T = (12 to 900) K and their interpretation. Olafsen, A., Atake, T, Fjellvåg, H., Kawaji, H., Matsuo, K. and Stølen, S. J. Chem. Thermodyn. 31 (1999) 433-439.
45. Reduction, crystal structure and magnetic properties of Co3-xAlxO4- (0.0 ≤ x ≤ 2.0, 0.0 ≤ ≤ 1). Comparison with the Co/-Al2O3 Fischer Tropsch catalyst. Hansteen, O. H., Fjellvåg, H. and Hauback,B. C. Acta Chem. Scand. 52 (1998) 1285 – 1292.
44. Non-stoichiometric LaVO3. II. Powder neutron diffraction study of crystal and magnetic structure for La1-xVO3, 0.00 ≤ x ≤ 0.10. Seim, H., Fjellvåg, H. and Hauback, B. C. Acta Chem. Scand. 52 (1998) 1301 – 1306.
43. Synthesis, crystal structure and magnetic properties of La4Co3O10+d, 0.00 ≤ d ≤ 0.30. Hansteen,O. H. and Fjellvåg, H. J. Solid State Chem. 141 (1998) 212-220.
42. Crystal structure and magnetic properties of La4Co3O9. Phase relations for La4Co3O10-d, 0.00 ≤ ≤ 1.00 Hansteen, O. H., Fjellvåg, H. and Hauback,B. C. J. Mater. Chem. 8 (1998) 2089 – 2093.
41. Powder neutron and X-ray diffraction study of La4Co3O10.00. Hansteen, O. H., Fjellvåg, H and Hauback, B. C. Chem. Pap. 52 (1998) 7-11.
40. Crystal structure and magnetic properties of La2Co2O5. Hansteen, O. H., Fjellvåg, H. and Hauback,B. C. J. Solid State Chem. 141 (1998) 411-417.
39. Phase relations for LaCoO3-d (0.00 ≤ d ≤ 0.50) at 673 K . Crystal structure, thermal and magnetic properties of La3Co3O8. Hansteen, O. H., Fjellvåg, H. and Hauback,B. C. J. Mater. Chem. 8 (1998) 2081 – 2088.
38. Non-stoichiometric LaVO3. I. Synthesis and Physical properties. Seim, H. and Fjellvåg, H. Acta Chem. Scand. 52 (1998) 1096 – 1103.
37. Characterization of Ni on La Modified Al2O3 Catalysts during CO2 Reforming of Methane. Slagtern, Å., Olsbye, U., Blom, R., Dahl, I. M. and Fjellvåg, H. Appl. Catalysis A165 (1997) 379-390.
36. Synthesis and Crystal Structure of LaNi1-xMxO2.5+d (M = Mn, Fe, Co). Aasland, S., Fjellvåg, H. and Hauback, B. C. J. Solid State Chem. 135 (1998) 103 - 110.
35. Properties of LaCo1-tCrtO3. IV. Structure and magnetism. Tilset, B. G., Fjellvåg, H., Kjekshus, A. and Hauback, B. C. Acta Chem. Scand. 52 (1998) 733-744.
34. Crystal structure of the mixed conductor Sr4Fe4Co2O13. Fjellvåg, H., Hauback, B. C. and Bredesen, R. J. Mater. Chem. 7 (1997) 2415 - 2419.
33. Effect of Non-stoichiometry on the Properties of La1-xMnO3-. Part II. Crystal Structure. Sakai, N. , Fjellvåg, H. and Lebech, B. Acta Chem. Scand. 51 (1997) 904-909.
32. Synthesis of metastable perovskite type HoMnO3 and YMnO3. Brinks, H. W., Kjekshus, A. and Fjellvåg, H. J. Solid State Chem. 129 (1997) 334-340.
31. Magnetic properties of one-dimensional Ca3Co2O6 .Aasland, S., H. Fjellvåg and Hauback, B. C. Solid State Comm. 101 (1997) 187-192.
30. Properties of LaCo1-tCrtO3. Part III Catalytic Activity for CO Oxidation. Tilset, B. G., Slagtern, Å., Dahl, I.M., Fjellvåg, H. and Kjekshus, A. J.Appl. Catalysis 147 (1996) 189-205.
29. Nickel Distribution on Aluminum Sites in LaNiAl11O19. Slagtern, Å. and Fjellvåg, H. Eur. J. Solid State Inorg. Chem., 33 (1996) 1241-1252.
28. Crystal structure and charge ordering in one-dimensional Ca3Co2O6. Fjellvåg, H., Gulbrandsen, E., Aasland, S., Olsen, A. and Hauback, B. C. J. Solid State Chem. 124 (1996) 190-194.
27. In situ XRD characterization of La-Ni-O catalyst for CO2 reforming of methane. Slagtern, Å., Olsbye, U., Blom, R., Dahl, I. M. and Fjellvåg, H. J. Appl. Catalysis A145 (1996) 375-388.
26. Effect of Non-stoichiometry on the Properties of La1-xMnO3-. Part I. Phase relations. Sakai, N. and Fjellvåg, H. Chem. Scand. 50 (1996) 580-586.
25. On the Structural and Magnetic properties of nearly Stoichiometric Iron Monoxide. Fjellvåg, H., Grønvold, F., Stølen, S. and Hauback, B. C. J. Solid State Chem. 124 (1996) 52-57.
24. Effect of Non-stoichiometry on the Properties of La1-xMnO3-. Part III. Magnetic Order Studied by Powder Neutron Diffraction. Hauback, B. C, Sakai, N. and Fjellvåg, H. J. Sol. Sate. Chem.124 (1996) 43-51.
23. Thermal analysis as aid in syntheses of oxidized or partly reduced perovskite type oxides. Fjellvåg, H., Hansteen, O. H., Olafsen, A., Sakai, N. and Seim, H. J. Chem. Thermodyn. 256 (1995) 75-89.
22. Synthesis and crystal structure of TiOSO4. Ahmed, M. A. K., Fjellvåg, H. and Kjekshus, A. Acta Chem. Scand. 50 (1996) 275-283.
21. Properties of LaCo1-tCrtO3. II Reduction and Reoxidation. Tilset, B. G., Fjellvåg, H. and Kjekshus, A. J. Sol. State Chem. 119 (1995) 271-280.
20. Structural, Magnetic and Thermal Properties of La1-tCatCrO3- Sakai, N., Fjellvåg, H. and Hauback, B. C. J. Sol. State Chem. 121 (1996) 202-213.
19. Different Routes in the Synthesis of (IO)2(SO4)1-x(SeO4)x Ahmed, M. A. K., Fjellvåg, H. and Kjekshus, A. Acta Chem. Scand. 48 (1994) 537-541.
18. Crystal Structure of I2O4 and its Relations to Other Iodine-Oxygen Containing Compounds Fjellvåg, H. and Kjekshus, A. Acta Chem. Scand. 48 (1994) 815-822.
17. Properties of LaCo1-tCrtO3. I. Solid Solubility, Thermal Expansion and Structural Transition. Gilbu, B., Fjellvåg, H. and Kjekshus, A. Acta Chem. Scand. 48 (1994) 37-45.
16. Preparation, structural and thermal properties of MAlSiO4 (M = Li, Na, K, Rb, Cs, Tl and Ag) with ABW-type structure. Norby, P. and Fjellvåg, H. Zeolites 12 (1992) 898 - 908.
15. Superconductivity in Y(Ba1-yLay)2Cu3O9-. Karen, P., Fjellvåg, H. and Kjekshus, A. J. Solid State Chem. 97 (1992) 257-273.
14. Chemical pressure and other effects of strontium substitution in YBa2Cu3O9-d. Karen, P., Fjellvåg, H., Kjekshus, A. and Andresen, A. F. J. Solid State Chem. 92 (1991) 57 - 67.
13. Lanthanum substitution for barium in YBa2Cu3O9-d. Karen, P., Fjellvåg, H., Kjekshus, A. and Andresen, A. F. J. Solid State Chem. 93 (1991) 163 - 172.
12. Substitution for copper in YB2Cu3O9-d by 3d- and pre-transition metals. Andersen, P. H., Fjellvåg, H., Karen, P. and Kjekshus, A. Acta Chem. Scand.45 (1991) 698 - 708.
11. The crystal structure of Cr8O21 determined from powder diffraction data. Thermal transformation and magnetic properties of a chromium-chromate-tetrachromate. Norby, P., Christensen, A. N., Fjellvåg, H. and Nielsen, M. J. Solid State Chem. 94 (1991) 281 - 293.
10. Lanthanide substitution in YBa2Cu3O9-d. Karen, P., Fjellvåg, H., Braaten, O., Kjekshus, A. and Bratsberg, H. Acta Chem. Scand. 44 (1990) 994-1001.
9. Superconducting properties in relation to chemical pressure in YBa2Cu3O7-x. Fjellvåg, H., Karen, P., Kjekshus, A. and Andresen, A. F. Physica C 162-164 (1989) 49 - 50.
8. Is mutual separation of rare earth elements crucial for preparation of high Tc materials? Fjellvåg, H.; Karen, Pavel; Kjekshus, Arne; Lyng, Stig; Braaten, Orvar. Physica C: Superconductivity and Its Applications (1988), 153-155(Pt. II), 1421-2.
7. Crystal structure of Y2Cu2O5 refined from powder neutron diffraction data. Fjellvåg, H., Karen, P. and Kjekshus, A. Acta Chem. Scand. A42 (1988) 144-147.
6. On the properties of the YBa8Cu4O12+d phase. Fjellvåg, H., Karen, P., Kjekshus, A. and Grepstad, J. K. Acta Chem. Scand. A42 (1988) 171-177..
5. Carbonatization of YBa2Cu3O6+x. Fjellvåg, H., Karen, P., Kjekshus, A., Kofstad, P. and Norby, T. Acta Chem. Scand. A42 (1988) 178-184.
4. Structure determination by use of the pattern decomposition and the Rietveld method on synchrotron X-ray and neutron powder data; the structure of Al2Y4O9 and I2O4. Lehmann, M. S., Christensen, A. N., Fjellvåg, H., Feidenhans´l, R. and Nielsen, M. J. Appl. Cryst. 20 (1987) 123-129.
3. Structural properties and phase transitions of Y2BaCuO5 and YBa2Cu3O9-d. Fjellvåg, H., Karen, P. and Kjekshus, A. Acta Chem. Scand. A41 (1987) 283-293.
2. X-ray photoelectron spectroscopy study of Y2BaCuO5 and YBa2Cu3O9-d. Fjellvåg, H., Karen, P., Kjekshus, A. and Grepstad, J. K. Solid State Commun. 64 (1987) 917-921.
1. Crystal and magnetic structure of MnSb2O4. Fjellvåg, H. and Kjekshus, A. Acta Chem. Scand. A39 (1985) 389-395.