M-Zn (M = Sb, V, and Nb) Substituted Strontium Hexaferrites with Enhanced Saturation Magnetization for Permanent Magnet Applications
M-Zn (M = Sb, V, and Nb) Substituted Strontium Hexaferrites with Enhanced Saturation Magnetization for Permanent Magnet Applications
Nina Sapoletova(Corporate R&D Institute, Samsung Electro-Mechanics); 안성용(삼성전기(주)); Sergey Kushnir(Corporate R&D Institute, Samsung Electro-Mechanics); Kyunghan Ahn(Corporate R&D Institute, Samsung Electro-Mechanics); Moonhee Choi(Corporate R&D Institute, Samsung Electro-Mechanics); Jae Yeong Kim(Corporate R&D Institute, Samsung Electro-Mechanics); Changhak Choi(Corporate R&D Institute, Samsung Electro-Mechanics); Sungkwon Wi(Corporate R&D Institute, Samsung Electro-Mechanics)
21권 3호, 315~321쪽
초록
M-Zn (M = Sb, V, Nb) substituted M-type strontium hexaferrites were prepared by a ceramic method. The phase composition, morphology and magnetic properties were studied by x-ray diffractometry, scanning electron microscopy and vibrating sample magnetometry. Saturation magnetization increases with a substitution up to 75.0 emu/g (2.5 % higher compared to unsubstituted hexaferrite) and then decreases with a further substitution. A coercive field of substituted hexaferrite powders with highest saturation magnetization is more than 3 kOe. Substituted strontium hexaferrite powders prepared in this work are a rare example of high MS compositions without doping rare-earth elements and would be a promising candidate for a permanent magnet application.
Abstract
M-Zn (M = Sb, V, Nb) substituted M-type strontium hexaferrites were prepared by a ceramic method. The phase composition, morphology and magnetic properties were studied by x-ray diffractometry, scanning electron microscopy and vibrating sample magnetometry. Saturation magnetization increases with a substitution up to 75.0 emu/g (2.5 % higher compared to unsubstituted hexaferrite) and then decreases with a further substitution. A coercive field of substituted hexaferrite powders with highest saturation magnetization is more than 3 kOe. Substituted strontium hexaferrite powders prepared in this work are a rare example of high MS compositions without doping rare-earth elements and would be a promising candidate for a permanent magnet application.
- 발행기관:
- 한국자기학회
- 분류:
- 자연과학일반