Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 40, Issue 12, Pages 4022-4028Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.04.036
Keywords
Complex oxides; Hexaferrites; Entropy state; Magnetic and electrical properties
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Funding
- Russian Science Foundation [18-73-10049, 18-42-06201]
- Russian Science Foundation [18-42-06201, 18-73-10049] Funding Source: Russian Science Foundation
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Low-entropy (un-substituted Ba-hexaferrite) and High-entropy (polysubstituted Ba-hexaferrite with Ga/In/Ti/Cr/Co ions) samples were synthesized. The crystal structure, microstructure, magnetic and electrical properties of BaFe12O19 and Ba(Fe6.00Ga1.26In1.17Ti1.20Cr1.22Co1.15)O-19 ceramic samples were investigated. It was established that there is a correlation between entropy state and the features of crystal structure. Magnetic properties are critically depended on entropy state and intensity of super exchange interactions. Magnetic phase separation was observed (coexistence of the classical multi domain states and magnetic nano regions) in HE-samples. In hexaferrites, a strong coupling between entropy state, magnetic and electrical properties was demonstrated.
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