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Mossbauer 분광 분석에 의한 Ba₂(Co, Zn)₂Fe₁₂O₂₂ 내의 이온 분포 연구
최상준(S. Choi),권순주(S. J. Kwon) 한국자기학회 1996 韓國磁氣學會誌 Vol.6 No.2
Y-type hexagonal ferrites(Ba₂(Co, Zn)₂Fe₁₂O₂₂ : Me=transition metal) have promising electromagnetic properties in ㎓ range. Co and Zn are good candidates for the transition metal. To understand their role on the properties, it is thus necessary to study the ion(s) distribution in that complex Y-type hexagonal ferrite structure. The authors report Mossbauer spectroscopic results from very reliable samples, which has been extensively characterized by chemical analysis, Rietveld analysis of X-ray diffraction patterns, and magnetic property measurements. Analyzing two samples, Co₂Y and Co_(1.6)Zn_(0.4)Y, conclusions are made as follow : (1) Co ions prefer the tetrahedral interstitial sites in the S-block (6c_Ⅳ) and the octahedral sites (18h_Ⅵ) at the interface of S- and T-block. (2) Partial substitution of Co with Zn (within the experimental range) does not disturb the Fe distribution.