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- W2013265587 abstract "<TEX>$Ba_2Mg_{0.5}Co_{1.5}(Fe_{0.99}In_{0.01})_{12}O_{22}$</TEX> 시료는 직접합성법으로 제조하였으며, 결정학적 및 자기적 특성을 x-선 회절기(x-ray diffractometer), 진동시료 자화율측정기(vibrating sample magnetometer)과 뫼스바우어 분광기(M<TEX>$ddot{o}$</TEX>ssbauer spectrometer)실험을 이용하여 연구하였다. <TEX>$Ba_2Mg_{0.5}Co_{1.5}(Fe_{0.99}In_{0.01})_{12}O_{22}$</TEX> 시료는 rhombohedral 결정구조로 공간그룹은 R-3m으로 결정되었다. 295 K에서 자화율 값은 28.6 emu/g을 가지며 페리자성 특성을 나타내고 있다. 시료의 뫼스바우어 분광 측정결과 4.2 K부터 620 K까지 6-sextet이 존재하였다. 이성질체 이동치의 값은 전 온도구간에서 Fe 이온은 모두 <TEX>$Fe^{3+}$</TEX>로 존재함을 알 수 있었고, zero velocity count(ZVC) 곡선을 통해 630 K를 퀴리온도를 결정하였다. <TEX>$Ba_2Mg_{0.5}Co_{1.5}(Fe_{0.99}In_{0.01})_{12}O_{22}$</TEX> was prepared by the conventional solid-state reaction method, and studied by x-ray diffractometer, vibrating sample magnetometer, and Mossbauer spectrometer. The crystal structure was determined to be a single-phased rhombohedral with space group R-3m. Magnetization value were <TEX>$M_s$</TEX> = 28.6 emu/g at 295 K. The hysteresis loops indicate that all the samples are ferrimagnetic behaviors. Mossbauer spectra of <TEX>$Ba_2Mg_{0.5}Co_{1.5}(Fe_{0.99}In_{0.01})_{12}O_{22}$</TEX> have been 6-sextet taken at various temperatures ranging from 4.2 to 620 K. Based on the isomer shift (<TEX>${delta}$</TEX>) values of all samples, the charge states were found to be <TEX>$Fe^{3+}$</TEX> state at all temperatures, the Curie temperature was determined to be 630 K by the ZVC curve." @default.
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- W2013265587 date "2012-02-29" @default.
- W2013265587 modified "2023-10-14" @default.
- W2013265587 title "Investigation of Mössbauer Spectra of Ba2Mg0.5Co1.5(Fe0.99In0.01)12O22" @default.
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- W2013265587 doi "https://doi.org/10.4283/jkms.2012.22.1.019" @default.
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