Magnetic Properties and Phase Transformation of Tb1-xPrxFe1.96 (x=0 to 0.7) Compounds
来源期刊：JOURNAL OF RARE EARTHS2006年第2期
论文作者：Gao Xuexu Zhou Shouzeng Zhang Shaoqiang Qiao Yi Zhang Maocai
Key words：giant magnetostrictive materials; TbPrFe compounds; magnetization; phase transformation; rare earths;
Abstract: The magnetic properties and the phase Transformation of Tb1-xPrxFe1.96 (x=0 to 0.7) compounds were studied by means of vibrating sample magnetometer(VSM), X-ray diffraction(XRD) and SEM back-scattered electron (BSE).The result indicates that the saturation magnetization σs of compounds along an easy axis decreases with the addition of Pr contents, which reduces from 77.24 Am2·kg-1 (x=0) to 11.84 Am2·kg-1 (x=0.5) and then returns to 37.14 Am2·kg-1 (x=0.7).The non-cubic phases appear when x exceeds 0.2, and the matrix of Tb1-xPrxFe1.96 compounds changes from (Tb, Pr)Fe2 phase with x=0 to (Tb, Pr)Fe3 phase with x=0.4, and at last to (Tb, Pr)2Fe17 phase in Tb0.3Pr0.7Fe1.96.Moreover, the structure of the compounds may become more complex with the increase of Pr content.
Gao Xuexu1，Zhou Shouzeng1，Zhang Shaoqiang1，Qiao Yi1，Zhang Maocai1
(1.State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:The magnetic properties and the phase Transformation of Tb1-xPrxFe1.96 (x=0 to 0.7) compounds were studied by means of vibrating sample magnetometer(VSM), X-ray diffraction(XRD) and SEM back-scattered electron (BSE).The result indicates that the saturation magnetization σs of compounds along an easy axis decreases with the addition of Pr contents, which reduces from 77.24 Am2·kg-1 (x=0) to 11.84 Am2·kg-1 (x=0.5) and then returns to 37.14 Am2·kg-1 (x=0.7).The non-cubic phases appear when x exceeds 0.2, and the matrix of Tb1-xPrxFe1.96 compounds changes from (Tb, Pr)Fe2 phase with x=0 to (Tb, Pr)Fe3 phase with x=0.4, and at last to (Tb, Pr)2Fe17 phase in Tb0.3Pr0.7Fe1.96.Moreover, the structure of the compounds may become more complex with the increase of Pr content.
Key words:giant magnetostrictive materials; TbPrFe compounds; magnetization; phase transformation; rare earths;
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