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Viser treff 1-26 av 26

2022
1 Premkumar, T.; Vidya, R.; Fjellvåg, Helmer.
Stabilizing p-type conductivity in CuYO2 by co-doping: A first-principles study. Materials Chemistry and Physics 2022 ;Volum 285. s. -
UiO Untitled
 
2019
2 Sreedevi, P. D.; Ponniah, Ravindran; Vidya, R..
First principles prediction of the ground state crystal structures of antiperovskite compounds A3PN (A= Be, Mg, Ca, Sr, Ba and Zn). Materials Today: Proceedings 2019 ;Volum 8. s. 294-300
UiO Untitled
 
2015
3 Iozzi, Maria Francesca; Vajeeston, Ponniah; Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer.
Structural and electronic properties of transparent conducting delafossite: a comparison between the AgBO2 and CuBO2 families (B = Al, Ga, In and Sc, Y). RSC Advances 2015 ;Volum 5.(2) s. 1366-1377
UiO Untitled
 
4 Manimuthu, P.; Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer; Venkateswaran, C..
Observation of direct magneto-dielectric behaviour in Lu3Fe5O12−δ above room-temperature. Physical Chemistry, Chemical Physics - PCCP 2015 ;Volum 17.(27) s. 17688-17698
UiO Untitled
 
2012
5 Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer.
Ab-initio studies on Li doping, Li-pairs, and complexes between Li and intrinsic defects in ZnO. Journal of Applied Physics 2012 ;Volum 111.(12) s. -
UiO Untitled
 
2011
6 Vajeeston, Ponniah; Vidya, R.; Fjellvåg, Helmer.
Nano-Phases of NaBH4 and KBH4. Journal of Nanoscience and Nanotechnology 2011 ;Volum 11.(3) s. 1929-1934
UiO Untitled
 
7 Vidya, Ravindran; Ravindran, Ponniah; Fjellvåg, Helmer; Svensson, Bengt Gunnar; Monakhov, Edouard; Ganchenkova, Maria; Nieminen, Risto G..
Energetics of intrinsic defects and their complexes in ZnO investigated by density functional calculations. Physical Review B. Condensed Matter and Materials Physics 2011 ;Volum 83.(4) s. -
UiO Untitled
 
2009
8 Karlsen, Ole Bjørn; Kjekshus, Arne; Fjellvåg, Helmer; Ravindran, Ponniah; Vidya, R.; Hauback, BC.
Structure and magnetism of the beta-Mn-Co solid-solution phase. Journal of Alloys and Compounds 2009 ;Volum 476.(1-2) s. 9-13
UiO IFE Untitled
 
2008
9 Ravindran, Ponniah; Vidya, R.; Eriksson, O; Fjellvåg, Helmer.
Magnetic-instability-induced giant magnetoelectric coupling. Advanced Materials 2008 ;Volum 20. s. 1353-+
UiO Untitled
 
10 Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer; Kjekshus, Arne.
Reply to "Comment on 'Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11' ". Physical Review B. Condensed Matter and Materials Physics 2008 ;Volum 77. s. -
UiO Untitled
 
11 Ravindran, Ponniah; Vidya, R.; Fjellvåg, Helmer; Kjekshus, Arne.
Validity of bond-length and Mossbauer parameters to assign oxidation states in multicomponent oxides: Case study of Sr4Fe4O11. Physical Review B. Condensed Matter and Materials Physics 2008 ;Volum 77. s. -
UiO Untitled
 
12 Vidya, R.; Ravindran, Ponniah; Knizek, K; Kjekshus, Arne; Fjellvåg, Helmer.
Density functional theory studies of spin, charge, and orbital ordering in YBaT2O5 (T = Mn, Fe, Co). Inorganic Chemistry 2008 ;Volum 47. s. 6608-6620
UiO Untitled
 
2006
13 Vidya, R..
Theoretical investigations on mixed-valent transition-metal oxides. Unipub forlag 2006 110 s. Dissertation for the Degree Dr. Philos. ISSN 1501-7710(485)
UiO Untitled
 
14 Ravindran, Ponniah; Vajeeston, Ponniah; Vidya, R.; Fjellvåg, Helmer; Kjekshus, A.
Modeling of hydrogen storage materials by density-functional calculations. Journal of Power Sources 2006 ;Volum 159. s. 88-99
UiO Untitled
 
15 Ravindran, Ponniah; Vidya, R.; Kjekshus, Arne; Fjellvåg, Helmer; Eriksson, O..
Theoretical investigation of magnetoelectric behavior in BiFeO3. Physical Review B. Condensed Matter and Materials Physics 2006 ;Volum 74. s. -
UiO Untitled
 
16 Vidya, R.; Ravindran, Ponniah; Fjellvåg, Helmer; Kjekshus, Arne.
Spin- and charge-ordering in oxygen-vacancy-ordered mixed-valence Sr4Fe4O11. Physical Review B. Condensed Matter and Materials Physics 2006 ;Volum 74. s. -
UiO Untitled
 
17 Vidya, R.; Ravindran, Ponniah; Kjekshus, A; Fjellvåg, Helmer.
Density-functional calculations of the crystal structures and properties of CsCr3O8 and ACr(3)O(8) (A=In,Tl,Cu,Ag,Au). Physical Review B. Condensed Matter and Materials Physics 2006 ;Volum 73.
UiO Untitled
 
18 Vidya, R.; Ravindran, Ponniah; Kjekshus, Arne; Fjellvåg, Helmer.
Crystal and electronic structures of Cr3O8 and LiCr3O8: Probable cathode materials in Li batteries. Physical Review B. Condensed Matter and Materials Physics 2006 ;Volum 73.
UiO Untitled
 
19 Vidya, R.; Ravindran, Ponniah; Kjekshus, Arne; Fjellvåg, Helmer.
First-principles density-functional calculations on HCr3O8: An exercise to better understand the ACr(3)O(8) (A = alkali metal) family. Journal of Electroceramics 2006 ;Volum 17. s. 15-20
UiO Untitled
 
2005
20 Vajeeston, P; Vidya, R.; Fjellvåg, Helmer.
Site preference of hydrogen in metal, alloy and intermetallic frameworks. Europhysics letters 2005 ;Volum nov. s. 569-575
UiO Untitled
 
2004
21 Ravindran, Vidya; Ponniah, Ravindran; Kjekshus, Arne; Fjellvåg, Helmer; Hauback, Bjørn.
Magnetic properties of Ca-doped SrRuO3 from full-potential calculations. Journal of Solid State Chemistry 2004 ;Volum 177. s. 146-158
UiO Untitled
 
22 Ponniah, Ravindran; Ravindran, Vidya; Fjellvåg, Helmer; Kjekshus, Arne.
Electronic structure and excited-state properties of Perovskite-like oxides. Journal of Crystal Growth 2004 ;Volum 268. s. 554-559
UiO Untitled
 
23 Ponniah, Vajeeston; Ponniah, Ravindran; Ravindran, Vidya; Fjellvåg, Helmer; Kjekshus, Arne.
Design of potential hydrogen-storage materials using first-principle density-functional calculations. Crystal Growth & Design 2004 ;Volum 4. s. 471-477
UiO Untitled
 
24 Ravindran, Vidya; Ponniah, Ravindran; Ponniah, Vajeeston; Fjellvåg, Helmer; Kjekshus, Arne.
Spin, charge, and orbital orderings in oxides with dual-valent transition metal ions. Ceramics International 2004 ;Volum 30. s. 1993-1998
UiO Untitled
 
25 Ravindran, Vidya; Ponniah, Ravindran; Ponniah, Vajeeston; Kjekshus, Arne; Fjellvåg, Helmer.
Effect of oxygen stoichiometry on spin, charge, and orbital ordering in manganites. Physical Review B. Condensed Matter and Materials Physics 2004 ;Volum 69. s. art. no.-092405
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2003
26 Vajeeston, Ponniah; Ravindran, Ponniah; Ravindran, Vidya; Fjellvåg, Helmer; Kjekshus, Arne.
Huge-pressure-induced volume collapse in LiAlH4 and its implications to hydrogen storage. Physical Review B. Condensed Matter and Materials Physics 2003 ;Volum 68. s. art. no.-212101
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