本文研究了非晶态Co_(90-x)Cr_xZr_(10)(0≤x≤25)合金的磁性,得到样品的Curie温度T_C和每个磁性原子的有效磁矩μ均随Cr含量x的增加近似线性下降,计算出每个Co和Cr原子的平均磁矩分别为μ_(Co)=1.51μ_B和μ_(Cr)=-3.62μ_B低温下的磁化强度与温度的关系符合Bloch的T~(3/2)定律,由此算出的自旋波劲度系数D从x=4时的D=2.788meVnm~2下降到x=20时的D=0.727meVnm~2,相互作用范围从x=4时的2—3个原子减小到x=20时的最近邻原子之间,样品的晶化温度随Cr含量x的增加单调上升,认为与合金的平均外层电子浓度有关,用X射线衍射和热磁测量分析了热处理样品的结晶相。
Curie temperature of amorphous alloys Co_(90-x)Cr_xZr_(10)decreases linearly with increasing x. Average magnetic moment per magnetic atom Co or Cr is 1.51 μB or --3.62 μB respectively. The temperature dependence of spontaneous magnetization at low temperatureis in agreement with Bloch's T~(3/2) law. The spin wave stiffness constant decreases with increasing x from 4 to 20. The range of interaction is 2--3 atoms for x=4 and neighbourest atom for x=20. The crystallization temperature increases monotonically with increasing x. It may be related toaverage number of outer electrons per atom. The crystalline phase components of heat-treated alloys were analyzed by X--ray diffration and thermomagnetic measurement.
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