Synthesis and Magnetic Properties of Na-La-Co System M-type Ferrite
Synthesis and Magnetic Properties of Na-La-Co System M-type Ferrite
Sung-Woo Shon(Pukyong University); Bu-An Kim(Pukyong University); Hae Woong Kwon(Pukyong Nat'l Univ.); 이정구(한국재료연구원)
26권 3호, 305~310쪽
초록
In this study, we investigated the synthesis of Na-La system M-type ferrite with different mole ratios. Some part of Fe in the M-type ferrite was substituted by Co, and variation of fraction of the M-type ferrite as function of mole ratio was investigated. Sample with/without Co-substitution composed of multiphases of M-type ferrite and other phases. Fraction of M-type ferrite in the samples was depending on mole ratio in the raw material. Curie temperatures of Co-free and Co-substituted M-type ferrite were approximately 432℃ and 428 ℃, respectively. Saturation magnetisation of the Co-free Na0.5La0.5 system M-type ferrite was approximately 72.5 emu/g.
Abstract
In this study, we investigated the synthesis of Na-La system M-type ferrite with different mole ratios. Some part of Fe in the M-type ferrite was substituted by Co, and variation of fraction of the M-type ferrite as function of mole ratio was investigated. Sample with/without Co-substitution composed of multiphases of M-type ferrite and other phases. Fraction of M-type ferrite in the samples was depending on mole ratio in the raw material. Curie temperatures of Co-free and Co-substituted M-type ferrite were approximately 432℃ and 428 ℃, respectively. Saturation magnetisation of the Co-free Na0.5La0.5 system M-type ferrite was approximately 72.5 emu/g.
- 발행기관:
- 한국자기학회
- 분류:
- 자연과학일반