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Helmer Fjellvåg

Helmer Fjellvåg

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Chemistry
Norway
2026

D-Index & Metrics

Chemistry

D-Index
80
Citations
26473
World Ranking
3382
National Ranking
9

Research.com Recognitions

  • 2026 - Research.com Chemistry in Norway Leader Award
  • 2025 - Research.com Chemistry in Norway Leader Award
  • 2022 - Research.com Chemistry in Norway Leader Award

Overview

Helmer Fjellvåg is affiliated with the University of Oslo in Norway and has contributed extensively to the fields of Materials Science and Engineering. Their research spans a diverse array of topics within these disciplines, with a primary focus on materials chemistry, electrical and electronic engineering, and condensed matter physics.

Their work frequently explores magnetic and transport properties of perovskites and related materials, advancements in battery materials including advanced battery technologies, and studies of electronic and structural properties of oxides. Additional thematic areas include X-ray diffraction in crystallography, ferroelectric and piezoelectric materials, and further aspects of condensed matter physics.

Frequent venues for their publications include:

  • Chemistry of Materials
  • The Cambridge Structural Database
  • Batteries & Supercaps
  • Inorganic Chemistry
  • arXiv (Cornell University)

Helmer Fjellvåg has co-authored numerous papers with researchers such as Øystein S. Fjellvåg, David S. Wragg, Anja Olafsen Sjåstad, Ponniah Vajeeston, and Bruno Gonano. These collaborations often delve into complex oxide electronics, crystallization processes, and battery material development.

Representative recent publications include:

  • A foundation for complex oxide electronics - low temperature perovskite epitaxy (2020, Nature Communications)
  • Enhancing giant magnetocaloric effect near room temperature by inducing magnetostructural coupling in Cu-doped MnCoGe (2020, Materials & Design)
  • Crystallization, Phase Stability, and Electrochemical Performance of β-MoO3 Thin Films (2020, Crystal Growth & Design)
  • First-Principles Insights into the Relative Stability, Physical Properties, and Chemical Properties of MoSe2 (2023, ACS Omega)
  • Understanding the (De)Sodiation Mechanisms in Na-Based Batteries through Operando X-Ray Methods (2021, Batteries & Supercaps)

The research contributions show a pattern of interdisciplinary engagement, combining experimental and theoretical approaches to address problems related to battery technologies, materials chemistry, and condensed matter physics.

Best Publications

  • Theoretical investigation of magnetoelectric behavior in Bi Fe O 3

    P. Ravindran;R. Vidya;A. Kjekshus;H. Fjellvåg

  • An In Situ High‐Temperature Single‐Crystal Investigation of a Dehydrated Metal–Organic Framework Compound and Field‐Induced Magnetization of One‐Dimensional Metal–Oxygen Chains

    Pascal D. C. Dietzel;Yusuke Morita;Richard Blom;Helmer Fjellvåg

  • Hydrogen adsorption in a nickel based coordination polymer with open metal sites in the cylindrical cavities of the desolvated framework

    Pascal D. C. Dietzel;Pascal D. C. Dietzel;Barbara Panella;Michael Hirscher;Richard Blom

  • Microstructures and Spectroscopic Properties of Cryptomelane-type Manganese Dioxide Nanofibers

    Tao Gao;Marianne Glerup;Frank Krumeich;Reinhard Nesper

  • A comparison study on Raman scattering properties of alpha- and beta-MnO2.

    Tao Gao;Helmer Fjellvåg;Poul Norby;Poul Norby

  • Amine functionalised metal organic frameworks (MOFs) as adsorbents for carbon dioxide

    Bjørnar Arstad;Helmer Fjellvåg;Kjell Ove Kongshaug;Ole Swang

  • Adsorption properties and structure of CO2 adsorbed on open coordination sites of metal–organic framework Ni2(dhtp) from gas adsorption, IR spectroscopy and X-ray diffraction

    Pascal D. C. Dietzel;Rune E. Johnsen;Helmer Fjellvåg;Silvia Bordiga

  • Crystal Structure and Possible Charge Ordering in One-Dimensional Ca3Co2O6

    Helmer Fjellvåg;Egil Gulbrandsen;Siv Aasland;Arne Olsen

  • Equation of state of magnetite and its high-pressure modification: Thermodynamics of the Fe-O system at high pressure

    Camilla Haavik;Svein Stølen;Helmer Fjellvåg;Michael Hanfland

  • Structural Changes and Coordinatively Unsaturated Metal Atoms on Dehydration of Honeycomb Analogous Microporous Metal–Organic Frameworks

    Pascal D. C. Dietzel;Pascal D. C. Dietzel;Rune E. Johnsen;Richard Blom;Helmer Fjellvåg

  • Base‐Induced Formation of Two Magnesium Metal‐Organic Framework Compounds with a Bifunctional Tetratopic Ligand

    Pascal D. C. Dietzel;Pascal D. C. Dietzel;Richard Blom;Helmer Fjellvåg

  • Crystal Structures of Titanate Nanotubes: A Raman Scattering Study

    Tao Gao;Helmer Fjellvåg;Poul Norby

  • Phase stability, electronic structure, and optical properties of indium oxide polytypes

    S. Zh. Karazhanov;P. Ravindran;P. Vajeeston;A. Ulyashin

  • Magnetic properties of the one-dimensional Ca3Co2O6

    S. Aasland;H. Fjellvåg;B. Hauback

  • Pressure-induced structural transitions in MgH2.

    P. Vajeeston;P. Ravindran;A. Kjekshus;H. Fjellvåg

  • Electronic structure and optical properties of ZnX ( X=O, S, Se, Te): A density functional study

    S. Zh. Karazhanov;P. Ravindran;A. Kjekshus;H. Fjellvåg

  • Large magnetocrystalline anisotropy in bilayer transition metal phases from first-principles full-potential calculations

    P. Ravindran;A. Kjekshus;H. Fjellvag;P. James

  • Oxygen Nonstoichiometry in YBaCo4O7+δ: Large Low-Temperature Oxygen Absorption/Desorption Capability

    Maarit Karppinen;H. Yamauchi;S. Otani;T. Fujita

  • Structural stability and pressure-induced phase transitions in MgH 2

    P. Vajeeston;P. Ravindran;B. C. Hauback;H. Fjellvåg

  • Detailed electronic structure studies on superconducting MgB 2 and related compounds

    P. Ravindran;P. Vajeeston;R. Vidya;A. Kjekshus

Frequent Co-Authors

Ponniah Ravindran
Ponniah Ravindran Central University of Tamil Nadu
Bjørn C. Hauback
Bjørn C. Hauback University of Oslo
Arne Kjekshus
Arne Kjekshus University of Oslo
Maarit Karppinen
Maarit Karppinen Aalto University
Poul Norby
Poul Norby Technical University of Denmark
Karl Petter Lillerud
Karl Petter Lillerud University of Oslo
Bengt Gunnar Svensson
Bengt Gunnar Svensson University of Oslo
Volodymyr A. Yartys
Volodymyr A. Yartys Norwegian University of Science and Technology
Unni Olsbye
Unni Olsbye University of Oslo
Truls Norby
Truls Norby University of Oslo

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