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説明:

We have investigated the solid solution range of single phase La1-xRxRh3B (R = Gd, Lu and Sc) compounds with a cubic anti-perovskite type structure. The behaviors of lattice parameters, hardness, and thermogravimetry–differential thermal analysis (TG-DTA) were also investigated. The cubic anti-perovskite phase exists over the entire composition range x from 0.0 to 1.0 for all La-Gd, La-Lu and La-Sc systems. Both the lattice parameters and the hardness in all La-Gd, La-Lu and La-Sc systems show a linear dependence on the degree of the substitution x of La atom. The results of TG-DTA measurements indicate that oxidation of the compound in air begins at about 500-600 K. The mixed phases of RBO3, R2O3 and Rh are identified as oxidized products around x = 0.5. The oxidation onset temperature, and weight gains due to the oxidation depend on the degree of substitution x. The behavior of crystallographic and physical/chemical properties in the present compounds La1-xRxRh3B strongly depend on the atomic size of the rare-earth atoms that form the cubic framework.

権利情報:

• In Copyright
  

キーワード: boride

刊行年月日: 2024-10-23

出版者: Elsevier BV

掲載誌:

• SOLID STATE SCIENCES (ISSN: 12932558) vol. 158 107731

研究助成金:

• Japan Science and Technology Agency
• Institute for Materials Research, Tohoku University
• Japan Society for the Promotion of Science 202212-CRKKE-0020
• Japan Society for the Promotion of Science JP20H05258
• Japan Society for the Promotion of Science JP23K04373
• Japan Society for the Promotion of Science 202311-RDKGE-0001
• Japan Society for the Promotion of Science 202211-RDKGE-0008
• Japan Society for the Promotion of Science JP19K05643
• JST-Mirai Program JPMJMI19A1

原稿種別: 査読前原稿 (Author's original)

MDR DOI: https://doi.org/10.48505/nims.5123

公開URL: https://doi.org/10.1016/j.solidstatesciences.2024.107731

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更新時刻: 2024-12-10 16:55:38 +0900

MDRでの公開時刻: 2024-12-10 16:55:38 +0900