Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4
Spinel-type InGaMgO4 with a = 8.56615(3) Å was prepared by treating layered YbFe2O4-type InGaMgO4 at 6 GPa and 1473 K. DFT calculation and Rietveld analysis of synchrotron X-ray powder diffraction data revealed the inverse spinel structure with In3+:Ga3+/Mg2+ = 0.726:0.274 in the tetrahedral site and 0.137:0.863 in the octahedral site. InGaMgO4 spinel is an insulator with an experimental band gap of 2.80 eV, and the attempt at hole doping by post-annealing in a reducing atmosphere to introduce an oxygen defect was unsuccessful. This is the first report of the bulk synthesis of AB2O4 compounds with both YbFe2O4 and spinel polymorphs.
Authors
- Fernando Cubillas
- Noboru Kimizuka
- Victor Emmanuel Alvarez‐Montaño (ORCID: https://orcid.org/0000-0003-4159-8558)
- Hayato Togano
- Kengo Oka (ORCID: https://orcid.org/0000-0002-1800-8575)
- Hiroki Ishibashi (ORCID: https://orcid.org/0000-0001-6049-3167)
- Yoshihiro Kusano (ORCID: https://orcid.org/0000-0003-3646-3413)
- Yoshiki Kubota (ORCID: https://orcid.org/0000-0003-1365-1577)
- Francisco Brown (ORCID: https://orcid.org/0000-0001-7012-2714)
- Shigekazu Ito (ORCID: https://orcid.org/0000-0002-5737-8499)
- Kei Shigematsu (ORCID: https://orcid.org/0000-0001-7762-9788)
- Hena Das (ORCID: https://orcid.org/0000-0001-5378-066X)
- Ikuya Yamada (ORCID: https://orcid.org/0000-0003-2340-131X)
- Masaki Azuma (ORCID: https://orcid.org/0000-0002-8378-321X)
- Shigeo Mori
- Takehiro Koike (ORCID: https://orcid.org/0000-0002-3588-6708)
Institutions
- Tokyo Institute of Technology (JP)
- Okayama University of Science (JP)
- Universidad de Sonora (MX)
- Kanagawa Industrial Technology Center (JP)
- Osaka Metropolitan University (JP)
- Kindai University (JP)
Publication Details
- Journal
- Solids
- Published
- 2024-08-19
- DOI
- https://doi.org/10.3390/solids5030028
- Citations
- 1
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.31
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science
- Institute of Innovative Research, Tokyo Institute of Technology