The Effect of Manganese Substituted M-type Hexagonal Ba-ferrite
The Effect of Manganese Substituted M-type Hexagonal Ba-ferrite
이인규(국민대학교); 서정철(원광대학교); 심인보(국민대학교); 김철성(국민대학교)
14권 2호, 93~96쪽
초록
The Mn-substituted M-type Ba-ferrite (BaFe12-xMnxO19; x = 0, 2, 4, 6) powders were prepared by the HTTD (High Temperature Thermal Decomposition) method. The effect of Mn3+ Jahn-Teller ions on the magnetic properties has been studied by x-ray diffraction, vibrating sample magnetometry, and Mössbauer spectroscopy. With increasing Mn substitution, the lattice parameter a0 increases while c0 decreases. The magnetocrystalline anisotropy constants (K1) were determined as 2.9, 2.2, 1.8, and, 1.3×106 erg/cm3 for x = 0, 2, 4, and 6, respectively, by the LAS method. We have studied the change of cation distribution by Mössbauer spectroscopywhich is closely related to K1.
Abstract
The Mn-substituted M-type Ba-ferrite (BaFe12-xMnxO19; x = 0, 2, 4, 6) powders were prepared by the HTTD (High Temperature Thermal Decomposition) method. The effect of Mn3+ Jahn-Teller ions on the magnetic properties has been studied by x-ray diffraction, vibrating sample magnetometry, and Mössbauer spectroscopy. With increasing Mn substitution, the lattice parameter a0 increases while c0 decreases. The magnetocrystalline anisotropy constants (K1) were determined as 2.9, 2.2, 1.8, and, 1.3×106 erg/cm3 for x = 0, 2, 4, and 6, respectively, by the LAS method. We have studied the change of cation distribution by Mössbauer spectroscopywhich is closely related to K1.
- 발행기관:
- 한국자기학회
- 분류:
- 자연과학일반