Microstructure and domain structures of Sm0.56GdxDy0.44−x(Co0.68Fe0.22Cu0.08Zr0.02)7.22 magnets with low temperature coefficients

Autor:	Baoshan Han, Changguo Ji, Jinbo Yang, Weihua Mao, Yingchang Yang, Wei Li, Xiaojun Yu, Hai Xu
Rok vydání:	1999
Předmět:	Magnetic anisotropy Materials science Magnetic domain Condensed matter physics Ferromagnetism Metallurgy General Physics and Astronomy Grain boundary Coercivity Magnetic force microscope Microstructure Magnetocrystalline anisotropy
Zdroj:	Journal of Applied Physics. 86:1053-1056
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.370846
Popis:	The microstructure and domain structures of high performance temperature-compensated sintered magnets with composition of Sm0.56GdxDy0.44−x(TM)7.22 (TM=Co0.68Fe0.22Cu0.08Zr0.02)7.22 (0.0⩽x⩽0.4) have been investigated by using electron microscopy and magnetic force microscopy. Both microstructure and magnetic properties of these magnets show a significant dependence on the content of heavy rare earth Gd and Dy. The intrinsic coercive force increases significantly with increasing Gd content. It is found that there are two different types of grains in the magnets, which show different domain structures. The larger magnetocrystalline anisotropy, larger cell size, and coarser grain boundary region give rise to a higher coercivity in the Gd-rich magnets.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e05acf921ab7dc3790bcdd4f5dc5a3af https://doi.org/10.1063/1.370846 Zobrazit plný text záznamu