摘要
利用高能球磨法和粉末烧结技术制备Mn95Ni5Fe100P77Ge23化合物。利用X射线衍射仪测量该化合物的X射线衍射花样,测量结果表明该化合物为Fe2P型六角结构,空间群为P-62m。变温X射线衍射花样分析表明该化合物的相转变温度在280K左右。通过测量该化合物在0.05T磁场下的变温磁化强度,得出其居里温度为284K。测量Mn95Ni5Fe100P77Ge23化合物在居里温度附近的等温磁化曲线,发现在居里温度以上出现了明显的由磁场增大引起的变磁转变现象。
The Mn95Ni5Fe100P77Ge23 compound was prepared by high energy ball milling and powder sintering techniques.The Mn95Ni5Fe100P77Ge23 compound has been investigated by means of X-ray diffraction and magnetic measurements.It crystallized in the Fe2P type structure with the lattice parameters a=b =0.61357(3)nm and c =0.33537(2) nm at 160 K and underwent a first-order phase transition at the Curie temperature of 284 K.The temperature dependence of X-ray diffraction measurements showed that the compound had a magnetic transition between the paramagnetic and ferromagnetic phases at 280 K.Isothermal magnetization curves of Mn95Ni5Fe100P77Ge23 compound near Curie temperature were measured.It was obviously found that magnetization transition phenomena caused by the increase of magnetic field appeared above Curie temperature.
作者
韩磊
李英杰
欧志强
哈斯朝鲁
特古斯
HAN Lei;LI Yingjie;OU Zhiqiang;Hasichaolu;O.Tegus(Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials,Physics and Electronic Information College,Inner Mongolia Normal University,Hohhot 010022,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第10期10092-10095,10103,共5页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51461035,11864031,11404176)
关键词
X射线衍射
磁弹耦合
铁磁态
顺磁态
居里温度
X-ray powder diffraction
magnetoelastic effect
ferromagnetic
paramagnetic
Curie temperature
