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首页> 外文期刊>Journal of the Physical Society of Japan >Spin Structure Change in Co-Substituted BiFeO3
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Spin Structure Change in Co-Substituted BiFeO3

机译:共取代的BiFeO3的自旋结构变化

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摘要

The spin structure in BiFe1-xCoxO3 (x = 0.05, 0.10, 0.15, 0.20) was investigated as a function of Co substitution, temperature, and magnetic field. It was found that the cycloidal spin structure of BiFeO3 changed to a collinear one with spin canting and composition-independent spontaneous magnetization of similar to 0.25 mu B/f.u. for the Co substituted samples on heating. The collinear phase was stabilized under magnetic fields. The spin structure change was clarified also by the temperature dependence of Fe-57 Mossbauer spectra, and the results indicated the first order nature of this transition.
机译:研究了BiFe1-xCoxO3(x = 0.05、0.10、0.15、0.20)中的自旋结构与Co取代,温度和磁场的关系。发现BiFeO3的摆线自旋结构变为共线的,具有自旋倾斜和与成分无关的自发磁化强度,类似于0.25μB / f.u。用于加热的钴取代样品。共线相在磁场下稳定。 Fe-57 Mossbauer光谱的温度依赖性也阐明了自旋结构的变化,结果表明了这种转变的一级性质。

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