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2024
1 Brennhagen, Anders; Skautvedt, Casper; Cavallo, Carmen; Wragg, David Stephen; Koposov, Alexey; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Unraveling the (De)sodiation Mechanisms of BiFeO<inf>3</inf> at a High Rate with Operando XRD. ACS Applied Materials & Interfaces 2024 ;Volum 16.(10) s. 12428-12436
UiO IFE Untitled
 
2 Brennhagen, Anders; Skurtveit, Amalie; Skautvedt, Casper; Cavallo, Carmen; Wragg, David Stephen; Vajeeston, Ponniah; Sjåstad, Anja Olafsen; Koposov, Alexey; Fjellvåg, Helmer.
Revealing the (de)sodiation mechanisms of Bi-metallates through operando X-ray characterisation. NKS-FUM 2024; 2024-02-27 - 2024-02-28
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2023
3 Amedi, Salah Bra.
Syntese av lavvalent kompleksfluorider. Oslo: Kjemisk Institutt, Universitetet i Oslo 2023 164 s.
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4 Banu S, Lathifa; Veerapandy, Vasu; Fjellvåg, Helmer; Ponniah, Vajeeston.
First-Principles Insights into the Relative Stability and Physical and Chemical Properties of MoSe2. ACS Omega 2023 ;Volum 8.(15) s. 13799-13812
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5 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Koposov, Alexey; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Tracing the (De)sodiation of Bi2MoO6 Through Good and Bad Times With Operando XRD. NKS-FUM 2023; 2023-02-13 - 2023-02-14
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6 Brennhagen, Anders; Skautvedt, Casper; Cavallo, Carmen; Skurtveit, Amalie; Wragg, David Stephen; Koposov, Alexey; Vajeeston, Ponniah; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Revealing the Cycling and Degradation Mechanism of Bi-Metallates as Anode Materials fro Na-ion Batteries. 244th ECS Meeting; 2023-10-08 - 2023-10-12
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7 Choudhary, Mukesh K.; Fjellvåg, Helmer; Ponniah, Ravindran.
First principle studies on electronic and thermoelectric properties of Fe2TiSn based multinary Heusler alloys. Computational Materials Science 2023 ;Volum 216. s. -
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8 Hempel, Frida Sveen.
Substituted Na-based Layered Tellurates: Synthesis, Local Structure and Na-Dynamics. Oslo: University of Oslo, Faculty of Mathematics and Natural Sciences, Department of Chemistry 2023 ;Volum 2023.Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.(2688)
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9 Hempel, Frida Sveen; Martineau-Corcos, Charlotte; Bianchini, Federico; Fjellvåg, Helmer; Arstad, Bjørnar.
Dynamics of Interlayer Na-Ions in Ga-Substituted Na2Zn2TeO6 (NZTO) Studied by Variable-Temperature Solid-State 23Na NMR Spectroscopy and DFT Modeling. ACS Physical Chemistry Au 2023 ;Volum 3.(4) s. 320-405
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10 Sottmann, Jonas; Ruud, Amund; Fjellvåg, Øystein Slagtern; Vaughan, Gavin B. M.; Di Michel, Marco; Fjellvåg, Helmer; Lebedev, Oleg I.; Ponniah, Vajeeston; Wragg, David Stephen.
Erratum: 5D total scattering computed tomography reveals the full reaction mechanism of a bismuth vanadate lithium ion battery anode (Phys. Chem. Chem. Phys. (2022) 24 (27075-27085) DOI: 10.1039/D2CP03892G). Physical Chemistry, Chemical Physics - PCCP 2023 s. -
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11 Thøgersen, Rasmus Vester; Fjellvåg, Asbjørn Slagtern; Fjellvåg, Øystein Slagtern; Fjellvåg, Helmer.
Structural and magnetic properties of antifluorite-type Li5+xFe1−xCoxO4. Zeitschrift für Anorganische und Allgemeines Chemie 2023 ;Volum 649.(22) s. -
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2022
12 Balakrishnan, Kanimozhi; Veerapandy, Vasu; Fjellvåg, Helmer; Ponniah, Vajeeston.
First-Principles Exploration into the Physical and Chemical Properties of Certain Newly Identified SnO<inf>2</inf>Polymorphs. ACS Omega 2022 ;Volum 7.(12) s. 10382-10393
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13 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Koposov, Alexey; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Tracing the (De)sodiation of Bi2MoO6 Through Good and Bad Times With Operando XRD. Nordbatt 2022; 2022-10-25 - 2022-10-28
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14 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Koposov, Alexey; Fjellvåg, Helmer.
Corrigendum: Operando XRD studies on Bi2MoO6 as anode material for Na-ion batteries (Nanotechnology (2022)33 (185402) DOI: 10.1088/1361-6528/ac4eb5). Nanotechnology 2022 ;Volum 33.(35) s. -
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15 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Koposov, Alexey; Fjellvåg, Helmer.
Operando XRD studies on Bi2MoO6 as anode material for Na-ion batteries. Nanotechnology 2022 ;Volum 33.(18) s. -
UiO IFE Untitled
 
16 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Koposov, Alexey; Fjellvåg, Helmer.
Tracing the (de)sodiation of Bi2MoO6 through good and bad times with operando XRD. International Operando Battery Days; 2022-05-16 - 2022-05-18
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17 Eggert, Bruno G. F.; Delczeg-Czirjak, Erna K.; Maccari, Fernando; Kumar, Susmit; Gutfleisch, Oliver; Fjellvåg, Helmer; Hauback, Bjørn Christian; Frommen, Christoph.
Exploring V-Fe-Co-Ni-Al and V-Fe-Co-Ni-Cu high entropy alloys for magnetocaloric applications. Journal of Alloys and Compounds 2022 ;Volum 921. s. -
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18 Hempel, Frida Sveen; Bianchini, Federico; Arstad, Bjørnar; Fjellvåg, Helmer.
Effects of Ga Substitution on the Local Structure of Na2Zn2TeO6. Inorganic Chemistry 2022 ;Volum 61.(33) s. 13067-13076
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19 Hessevik, Julie; Fjellvåg, Asbjørn Slagtern; Iveland, Oskar; By, Thomas; Skjelstad, J.; Waller, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen.
LaNiO3 as a Pt catchment material in the ammonia oxidation process. Materials Today Communications 2022 ;Volum 33. s. -
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20 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. -
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21 Raniseth, Amund Midtgard.
Synthesis, structural characterization, electrochemical properties, and thermal stability of Al-substituted LiMn1.5Ni0.5O4. Oslo: Kjemisk Institutt, Universitetet i Oslo 2022 192 s.
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22 Skautvedt, Casper.
Syntese og karakterisering av BiFeO3 som anodemateriale i Na-ionebatterier. Oslo: Kjemisk institutt, Universitetet i Oslo 2022 115 s.
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23 Sottmann, Jonas; Ruud, Amund; Fjellvåg, Øystein; Vaughan, Gavin B. M.; Di Michel, Marco; Fjellvåg, Helmer; Lebedev, Oleg I.; Ponniah, Vajeeston; Wragg, David Stephen.
5D total scattering computed tomography reveals the full reaction mechanism of a bismuth vanadate lithium ion battery anode. Physical Chemistry, Chemical Physics - PCCP 2022 ;Volum 24.(44) s. 27075-27085
UiO Untitled
 
24 Thøgersen, Rasmus Vester; Bianchini, Federico; Fjellvåg, Helmer; Ponniah, Vajeeston.
Antifluorite-type Na<inf>5</inf>FeO<inf>4</inf> as a low-cost, environment-friendly cathode with combined cationic/anionic redox activity for sodium ion batteries: a first-principles investigation. RSC Advances 2022 ;Volum 12.(27) s. 17410-17421
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2021
25 Brennhagen, Anders; Cavallo, Carmen; Wragg, David; Vajeeston, Ponniah; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Bi4V2O11/RGO composite as conversion and alloying anode for Na-ion batteries. HERCULES2021; 2021-02-22 - 2021-03-26
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26 Bernal, Fabian Leonardo Martinez; Lundvall, Fredrik; Kumar, Susmit; Hansen, Per-Anders S.; Wragg, David S.; Fjellvåg, Helmer; Løvvik, Ole Martin.
Jahn-Teller active fluoroperovskites ACrF3 (A=Na+, K+): Magnetic and thermo-optical properties. PHYSICAL REVIEW MATERIALS 2021 ;Volum 5.(6) s. -
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27 Brennhagen, Anders; Cavallo, Carmen; Wragg, David; Sottmann, Jonas; Koposov, Alexey; Fjellvåg, Helmer.
Understanding the (De)Sodiation Mechanisms in Na‐Based Batteries through Operando X‐Ray Methods. Batteries & Supercaps 2021 ;Volum 4.(7) s. 1039-1063
UiO IFE Untitled
 
28 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Koposov, Alexey; Ponniah, Vajeeston; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Operando XRD study on Bi2MoO6 as anode material for Na-ion batteries. NKS-FUM Meeting 2021; 2021-02-01 - 2021-02-02
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29 Brennhagen, Anders; Cavallo, Carmen; Wragg, David Stephen; Sjåstad, Anja Olafsen; Ponniah, Vajeeston; Fjellvåg, Helmer.
Operando XRD studies on Bi2MoO6 as anode material for Na-ion batteries. E-MRS Fall Meeting 2021; 2021-09-20 - 2021-09-23
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30 Brennhagen, Anders; Wragg, David; Fjellvåg, Helmer; Vajeeston, Ponniah; Sjåstad, Anja Olafsen; Cavallo, Carmen.
Beyond Insertion: Conversion alloying Bi/RGO-based materials as novel anodes for Na-ion batteries. Swiss Battery days 2021; 2021-02-15 - 2021-02-17
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31 Gonano, Bruno Raymond Gino; Fjellvåg, Øystein; Steciuk, Gwladys; Guillou, Francois; Saha, Dipankar; Pelloquin, Denis; Fjellvåg, Helmer.
Tuning the Magnetically Segregated Nanolayering in Mn–Ni–As Intermetallics. Chemistry of Materials 2021 ;Volum 33.(8) s. 3002-3010
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32 Hessevik, Julie; Fjellvåg, Asbjørn Slagtern; Iveland, Oskar; By, Thomas; Skjelstad, Johan; Waller, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen.
LaNiO3 as a Pt catchment material in the ammonia oxidation process. NKS-FUM 2021; 2021-11-01 - 2021-11-02
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33 Hessevik, Julie; Fjellvåg, Asbjørn Slagtern; Iveland, Oskar; By, Thomas; Skjelstad, Johan; Waller, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen.
LaNiO3 as a Pt catchment material in the ammonia oxidation process. iCSI Annual Seminar 2021; 2021-10-18 - 2021-10-19
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34 Karthikeyan, Jayakumar; Fjellvåg, Helmer; Bundli, Silje; Sjåstad, Anja Olafsen.
Efficient Exfoliation of Layered Double Hydroxides; Effect of Cationic Ratio, Hydration State, Anions and Their Orientations. Materials 2021 ;Volum 14.(2)
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35 Periyasamy, Manimuthu; Patra, Lokanath; Fjellvåg, Øystein; Ravindran, Ponniah; Sørby, Magnus Helgerud; Kumar, Susmit; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Effect of electron doping on the crystal structure and physical properties of an n = 3 Ruddlesden-Popper compound La4Ni3O10. ACS Applied Electronic Materials 2021 ;Volum 3.(6) s. 2671-2684
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36 Saha, Dipankar; Kumar, Susmit; Gonano, Bruno Raymond Gino; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Total Scattering Study of Local Structural Changes in MnAs1-xPx Influenced by Magnetic Interactions. Chemistry of Materials 2021 ;Volum 33. s. 2576-2584
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37 Schuler, Raphael; Bianchini, Federico; Norby, Truls Eivind; Fjellvåg, Helmer.
Near-Broken-Gap Alignment between FeWO4 and Fe2WO6 for Ohmic Direct p–n Junction Thermoelectrics. ACS Applied Materials & Interfaces 2021 ;Volum 13.(6) s. 7416-7422
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38 Schuler, Raphael.
Oxide thermoelectrics - materials, junctions and modules. Oslo: Matematisk Naturvitenskapelig fakultet, Universitetet i Oslo 2021 ;Volum 2021.140 s. Series of dissertations submitted to the Faculty of Mathematics and Natural Sciences, University of Oslo.(2364)
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39 Sønsteby, Henrik Hovde; Skaar, Erik; Fjellvåg, Helmer; Nilsen, Ola.
Effect of Subcycle Arrangement on Direct Epitaxy in ALD of LaNiO3. ACS Applied Electronic Materials 2021 ;Volum 3.(1) s. 292-298
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2020
40 Arstad, Bjørnar; Blom, Richard; Håkonsen, Silje Fosse; Pierchala, Joanna; Cobden, Paul; Lundvall, Fredrik; Kalantzopoulos, Georgios N.; Wragg, David; Fjellvåg, Helmer; Sjåstad, Anja Olafsen.
Synthesis and Evaluation of K-Promoted Co3-xMgxAl-Oxides as Solid CO2 Sorbents in the Sorption-Enhanced Water−Gas Shift (SEWGS) Reaction. Industrial & Engineering Chemistry Research 2020 ;Volum 59.(40) s. 17837-17844
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41 Bernal, Fabian Leonardo Martinez; Gonano, Bruno Raymond Gino; Lundvall, Fredrik; Wragg, David; Fjellvåg, Helmer; Veillon, Fabien; Sławińsk, Wojciech; Fjellvåg, Øystein.
Canted antiferromagnetism in high-purity NaFeF3 prepared by a novel wet-chemical synthesis method. PHYSICAL REVIEW MATERIALS 2020 ;Volum 4.(11)
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42 Bernal, Fabian Leonardo Martinez; Sottmann, Jonas; Wragg, David; Fjellvåg, Helmer; Fjellvåg, Øystein; Drathen, Christina; Slawinski, Wojciech Andrzej; Løvvik, Ole Martin.
Structural and magnetic characterization of the elusive Jahn-Teller active NaCrF3. PHYSICAL REVIEW MATERIALS 2020 ;Volum 4.(5) s. -
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43 Bratvold, Jon E.; Fjellvåg, Helmer; Nilsen, Ola.
Phase and Orientation Control of NiTiO3 Thin Films. Materials 2020 ;Volum 13.(1) s. 1-19
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44 Cavallo, Carmen; Brennhagen, Anders; Wragg, David; Fjellvåg, Helmer.
Beyond Insertion: Conversion alloying Bi/RGO-based materials as anode for Na-ion batteries. MoZEES; 2020-09-21 - 2020-09-23
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45 Dietzel, Pascal D.C.; Blom, Richard; Fjellvåg, Helmer.
Variability in the formation and framework polymorphism of metal-organic frameworks based on yttrium(III) and the bifunctional organic linker 2,5-dihydroxyterephthalic acid. Zeitschrift für Anorganische und Allgemeines Chemie 2020 ;Volum 647.(1) s. 15-25
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46 Dietzel, Pascal D.C.; Georgiev, Peter A.; Frøseth, Morten; Johnsen, Rune E.; Fjellvåg, Helmer; Blom, Richard.
Effect of larger pore size on the sorption properties of isoreticular metal–organic frameworks with high number of open metal sites. Chemistry - A European Journal 2020 ;Volum 26. s. 13523-13531
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47 Duparc, Marion Jeanne Louise; Sønsteby, Henrik Hovde; Nilsen, Ola; Sjåstad, Anja Olafsen; Fjellvåg, Helmer.
Atomic Layer Deposition of GdCoO3 and Gd0.9Ca0.1CoO3. Materials 2020 ;Volum 13.(1) s. 1-10
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48 El-Kharbachi, Abdelouahab; Wind, Julia; Ruud, Amund; Høgset, Astrid Bygdås; Nygård, Magnus Moe; Zhang, Junxian; Sørby, Magnus Helgerud; Kim, Sangryun; Cuevas, Fermin; Orimo, Shin-Ichi; Fichtner, Maximilian; Latroche, Michel; Fjellvåg, Helmer; Hauback, Bjørn.
Pseudo-ternary LiBH4-LiCl-P2S5 system as structurally disordered bulk electrolyte for all-solid-state lithium batteries. Physical Chemistry, Chemical Physics - PCCP 2020 ;Volum 22.(25) s. 13872-13879
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49 Fjellvåg, Øystein; Ruud, Amund; Sønsteby, Henrik Hovde; Nilsen, Ola; Fjellvåg, Helmer.
Crystallization, Phase Stability, and Electrochemical Performance of β-MoO3 Thin Films. Crystal Growth & Design 2020 ;Volum 20.(6) s. 3861-3866
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50 Fjellvåg, Øystein; Sønsteby, Henrik Hovde; Nilsen, Ola; Wolff, Max; Kapaklis, Vassilios; Fjellvåg, Helmer; Frommen, Christoph; Hauback, Bjørn.
Towards Multiferroic Thin Film Composites by Atomic Layer Deposition (ALD). 7th National meeting in Inorganic Materials Chemistry; 2020-02-14 - 2020-02-15
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