摘要
通过Ｘ射线衍射等手段对赝三元金屑间化物（Ｓｍ＿（１－ｘ）Ｙ＿ｘ）＿２Ｆｅ＿（１７）Ｎ＿ｙ（ｘ＝０，０．２．０．４．０．６，０．８和１．０；２＜ｙ＜３）的晶体结构及自旋磁结构进行了研究。由试验结果得出以下结论：１）当Ｙ的含量ｘ为０．４时，已出现两相共存现象，但两相中以Ｔｈ＿２Ｚｎ＿（１７）型结构相为主，Ｔｈ＿２Ｎｉ＿（１７）型结构相为次；当Ｙ的含量了达到０．６时，其晶体结构由Ｔｈ＿２Ｚｈ＿（１７）型结构变为Ｔｈ＿２Ｎｉ＿（１７）型结构；２）当Ｙ的含量ｘ在０．８～１．０的范围内，存在自旋磁结构的变化，即由易Ｃ轴各向异性变为易Ｃ平面各向异性；３）杂质相（α－Ｆｅ相）的含量随着Ｙ含量ｘ的增加而减小。
X-ray diffraction method was used to study the crystal structure and the spinmagnetic structure of intermetallic compounds(Sm_(1-x)Y_x)_2Fe_(17)N_y (x= 0,0.2,0.4,0.6,0.8, and1.0;2<y<3).The experimental results have confirmed the following facts:1)There coexist twophases in intermetallic compounds (Sm_(1-x)Y_x)_2Fe_(17)N_y when the yttrium content x exceeds 0.4,but the Th2Zn17 type structure phase is main phase and the Th2Ni17 type structure phase is secondphase;The crystal structure of intermetallic compounds(Sm_(1-x)Y_x)_2Fe_(17)N_y changes fromTh2Zn17 type to Th2Ni17 type when the yttrium content x exceeds 0.6;2)The spin magneticstructure of intermetallic compounds (Sm_(1-x)Y_x)_2Fe_(17)N_y changes from easy C-axis anisotropyto easy C-plane anisotropy as the yttrium content ranges from x=0.8 to 1.0;3)The impurityphases content of intermetallic compounds(Sm_(1-x)Y_x)_2Fe_(17)N_y(α-Fe phase)decreases with theincrease of yttrium content x。
出处
《南昌大学学报（工科版）》
CAS
1995年第3期78-84,共7页
Journal of Nanchang University(Engineering & Technology)
基金
江西省自然科学基金
关键词
X射线衍射
自旋磁结构
晶体结构
金属间化合物
Intermetallic compounds(Sm_(1-x)Y_x)_2Fe_(17)N_y,X-ray diffraction,Spin mag-netic structure,Crystal structure,Easy C-axis anisotropy
