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The magnetic susceptibility χ of the binary alloy Cr + 2.7% Fe and of nine V-doped and seven Mn-doped ternary alloys has been measured as a function of temperature T from 5 to 300 K, and as a function of field H in the range −55 H T = 5 K. The Neel temperature T N of the V-doped alloys drops with increasing V content x , and antiferromagnetism disappears for x ≥ 2.5% V. χ ( T ) exhibits a Curie-Weiss law in both the paramagnetic and antiferromagnetic phase. In the Mn-doped alloys, for x ≥ 1.5% Mn, an additional contribution to χ ( T ) appears at lower temperatures, which is hysteretic between the field-cooled and zero-field-cooled states. The onset or pinning temperature TP p increases only slowly with increasing x , which suggests that this component of χ ( T ) corresponds to the new type of spin glass seen in binary CrMn alloys. |
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