| Autor: |
Takehiro Koike, Hena Das, Kengo Oka, Yoshihiro Kusano, Fernando Cubillas, Francisco Brown Bojorqez, Victor Emmanuel Alvarez-Montano, Shigekazu Ito, Kei Shigematsu, Hayato Togano, Ikuya Yamada, Hiroki Ishibashi, Yoshiki Kubota, Shigeo Mori, Noboru Kimizuka, Masaki Azuma |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Solids, Vol 5, Iss 3, Pp 422-433 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2673-6497 |
| DOI: |
10.3390/solids5030028 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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