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J. Korean Ceram. Soc. > Volume 32(4); 1995 > Article
Journal of the Korean Ceramic Society 1995;32(4): 436.
미세 구조가 Mg-페라이트 소결체의 자성에 미치는 영향
김성재, 정명득, 백종규
국방과학연구소 기술연구본부
Effects of Microstructure on the Magnetic Properties of Mg-ferrite Sintered Body
ABSTRACT
Effects of microstructure of two Mg-ferrite specimens with the same starting composition and relative density but with different grain size on B-H hysteresis loop, natural resonance frequency, and ferromagnetic resonance line width are reported. Such properties as B-H hysteresis loop, saturation magnetization, natural resonance frequency, and ferromagnetic resonance line width were influenced by the microstructure development during sintering. Large grain size specimen showed high saturation magnetization, low coercive force, low natural resonance frequency, and low ferromagnetic resonance line width compared with the specimen of small grain size. The main reason for the changes in properties can be explained by the variation in anisotropic characteristics due to Fe+2 content generated during sintering process.
Key words: Mg-ferrite, Microstructure, Anisotropic characteristic
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