CeFe10.5Si2.5金属间化合物晶体结构、磁性和磁熵变特性研究

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通过X射线衍射和磁性测量等手段对金属间化合物CeFe10.5Si2.5的晶体结构、磁性以及磁熵变进行了研究。结果表明,经过对铸态样品进行12h退火所得的金属间化合物CeFe10.5Si2.5晶体为单相立方NaZn13型结构;在1.5T外磁场下居里温度Tc~206K附近的最大等温磁熵变为10.7J·kg^-1·K^-1,并随着外磁场的增大而迅速增大;从Arrott曲线中可以看出,在此化合物中没有明显的巡游电子变磁转变特性,但从低磁场下的热磁曲线可知,磁化强度在居里温度处发生陡峭的变化,这
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