Journal
JOURNAL OF APPLIED PHYSICS
Volume 117, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4917218
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Funding
- National Natural Science Foundation of China [51225201, 61271078, 51102133]
- 973 Project of MOST [2015CB921201]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fundamental Research Funds for the Central Universities
- Fundamental and Frontier Research of Henan Province [142300410099]
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Y3-xLaxFe5O12 (x = 0-0.5) ceramics with garnet structure are prepared by the solid state reaction method and their structural, magnetic, and magnetodielectric properties are investigated systematically. La3+ substitution leads to lattice expansion and possible ion transposition, which oppositely affect the variation of Fe2+ concentration. As a result, both the saturation magnetization and the intrinsic magnetodielectric effect first increase and then decrease with the increase of La concentration. More interestingly, room temperature large magnetodielectric coefficient of about -5% is obtained at 10(6) Hz and 0.9 T for Y2.7La0.3Fe5O12 ceramics. This study provides a feasible alternative method for modulating the saturation magnetization and the magnetodielectric effect of Y3Fe5O12-based materials. (C) 2015 AIP Publishing LLC.
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