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We report a systematic evaluation of the magnetic properties of FeAl2O4 focusing on the relationship between the fabrication conditions and its structural characteristics, in order to improve ceramics processing in applications of this material. For this purpose, the most important factor to control is the inversion parameter, expressed as y in the (Fe1−yAly)(Al1−y/2Fey/2)2O4 composition, which is relatively high for the spinel aluminate of a transition metal. The magnetic properties of these samples all shows the spin glass phenomenon at low temperatures, and the cusp temperature depends systematically on this y value. This means that the evaluation of these magnetic properties will be an effective way to predict some characteristics of product FeAl2O4. Additionally, this study found an anomaly in the structural and magnetic characteristics of FeAl2O4 fabricated at a low temperature. This is thought to originate in a tiny and a small amount of impurity. It will be key for discussing the quality of chemically synthesized FeAl2O4, which is typically produced at low temperatures.

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  This is the peer reviewed version of the following article: Nakane T, Ishii S, Uchikoshi T, Naka T. Influence of fabrication conditions on the structural characteristics and the magnetic properties of FeAl2O4. J Am Ceram Soc. 2023; 106: 2317–2325, which has been published in final form at https://doi.org/10.1111/jace.18915. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

Keyword: aluminates, magnetic materials, sinter, spinel

Date published: 2022-12-13

Publisher: Wiley

Journal:

• Journal of the American Ceramic Society (ISSN: 15512916) vol. 106 issue. 4 p. 2317-2325

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Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5220

First published URL: https://doi.org/10.1111/jace.18915

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Updated at: 2024-12-25 16:30:52 +0900

Published on MDR: 2024-12-25 16:30:52 +0900