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No.2(pp.53-100)
Home > Issues > Volume 14 (2009) > No.2(pp.53-100)
 
The Effect of Manganese Substituted M-type Hexagonal Ba-ferrite
Journal of Magnetics, Volume 14, Number 2, 30 Jun 2009, Pages 93-96
In Kyu Lee(Department of Physics, Kookmin University), Jung Chul Sur(Department of Microelectronics and Display Technology, Wonkwang University), In-Bo Shim(Department of Physics, Kookmin University), Chul Sung Kim* (Department of Physics, Kookmin University)
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 spectroscopy which is closely related to K1.
Keywords: Ba-ferrite; Mössbauer spectra; magnetocrystalline anisotropy; cation distribution
DOI: 10.4283/JMAG.2009.14.2.93
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