物理学报2012，Vol.61Issue(14)：388-396,9.
铁基Heusler合金Fe_2Co_（1-x）Cr_xSi的结构、磁性和输运性质的研究
Structural, magnetic, transport, and half-metallic properties of Fe_2Co_（1-x）Cr_xSi Heusler alloys
摘要
Abstract
The structural,the magnetic,the transport and the half-metallic properties of quaternary Heusler alloy Fe_2Co_（1-x）Cr_x Si are investigated. The studies of X-ray diffraction and temperature dependence of magnetization reveal that Fe_2Co_（1-x）Cr_x alloy always maintains a high degree of order,while the Curie temperature decreases gradually with the increase of Cr concentration x.Importantly, the lattice constant and the saturation magnetic moment of Fe_2Co_（1-x）Cr_x alloy follow the Vegard law and half-metallic Slater-Pauling rule,respectively.Based on the band structure calculation,Fe_2Co_（1-x）Cr_x alloy keeps a 100%spin polarization and Fermi level moves from the top of valence band to the bottom of conduction band,depending on Cr concentration x.Our results indicate that quaternary Fe_2Co_（1-x）Cr_x Heusler alloy is a promising robust half-metallic candidate for spintronics applications.关键词
磁性/半金属/Heusler合金Key words
magnetic properties/half-metal/Heusler alloys分类
化学化工引用本文复制引用
杜音,王文洪,张小明,刘恩克,吴光恒..铁基Heusler合金Fe_2Co_（1-x）Cr_xSi的结构、磁性和输运性质的研究[J].物理学报,2012,61(14):388-396,9.基金项目
国家自然科学基金（批准号：51171207）和国家自然科学基金创新研究群体科学基金（批准号：51020161）资助的课题~~ （）
