摘要
采用溶胶-凝胶工艺制备了La0.67Sr0.33Mn1-xFexO3多晶样品,并研究了其晶体结构、磁热效应及室温下的磁致伸缩效应.其X射线衍射谱表明,所有样品均为钙钛矿结构单相,分析表明,随Fe含量的增加,材料的铁磁居里温度(TC)下降,磁致伸缩系数先增加后降低.
La0.67Sr0.33Mn1-xFexO3 polycrystaline samples(0.05≤x≤0.4) were prepared by the sol-gel technique,and their structure,magnetocaloric effect and magnetostriction effect were studied carefully at the room temperature.The X-ray diffraction pattern indicated that the structure of samples are single phase Perovskite.Experimental results show that the Fe doping leads to a decrease in the ferromagnetic ordering temperature,with the magnetostriction factors increased first and decreased later.
出处
《内蒙古科技大学学报》
CAS
2009年第1期24-27,共4页
Journal of Inner Mongolia University of Science and Technology
关键词
磁致伸缩
掺杂
溶胶-凝胶工艺
磁热效应
magnetostriction
doping
sol-gel technique
magnetocaloric effect
