Abstract
Spin glass (SG) and Invar effect for amorphous Fe 91(Zr 1− x B x ) 9 [ x = 0 − 0.4] alloys have been investigated. Curie temperature, T c , and spin freezing point, T f , have been obtained from measurements of AC susceptibility χ AC . The value of T c increases with increasing B content, but T f decreases and vanishes at around x = 0.7. These behaviors are explained by the Sherington—Kirkpatrick model. The pressure effect of T c , dT c/dp , has been obtained indirectly from measurements of forced volume magnetostriction dω/dH. The curve of dT c/dp versus T c indicates that the measured samples are in the magnetically inhomogeneous state (MIS) according to the Wagner-Wohlfarth discussion. The relation between SG and MIS of samples are discussed.
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