亚稳态化合物Ce_2Fe_(23)B_3的结构与磁性  

STRUCTURE AND MAGNETIC PROPERTIES OF METASTABLE COMPOUND Ce_2Fe_(23)B3

作　　者：沈保根[1] 曹蕾[1] 宫华扬[1] 杨林原 孔麟书[1] 郭慧群[1] 

机构地区：[1]中国科学院物理研究所磁学国家重点实验室,副研究员北京100080

出　　处：《金属学报》1993年第6期A248-A252,共5页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：研究了非晶态Ce_2Fe_(23)B_3合金的晶化以及亚稳态化合物Ce_2Fe_(23)B_3的结构与磁性XRD分析证实,Ce_2Fe_(23)B_3为bcc结构,晶格常数α=1.417nm由Ce_2Fe_(23)B_3的室温Mossbauer谱,确定不同Fe位Fe原子磁矩的大小依次为:μFe(48e_1)>μFe(48e_2)>μFe(48e_3)>μFe(16c)>μFe(24d),平均每个Fe原子和Ce原子的磁矩分别为1.94和0.Crystallization of amorphous Ce_2Fe_(23)B_3 alloys as well as structure and mag-netic properties of metastable compound Ce_2Fe_(23)B_3 were studied. X-ray diffraction analysisconfirmed that the crystal structure of Ce_2Fe_(23)B_3 compound is body-centered cubic, its lat-tice constant α=1.417 nm. Measurement of room temperature hyperfine field ofCe_2Fe_(23)B_3 observeed that the size of Fe magnetic moment in different Fe site is orderlyμ_(Fe)(48e_1)>μ_(Fe)(48e_2)>μ_(Fe)(48e_3)>μ_(Fe)(16c)>μ_(Fe)(24d). Average magnetic moments per Fe atomand per Ce atom are 1.94 and 0.85μ_B respectively.

关 键 词：亚稳态化合物 Ce2Fe23B3 磁性 

分 类 号：TG139.8[一般工业技术—材料科学与工程]