Evidence for a rhodium moment in amorphous (FexRh1-x)80B20 alloys

Paulose, P. L. ; Nagarajan, V. ; Nagarajan, R. ; Vijayaraghavan, R. (1990) Evidence for a rhodium moment in amorphous (FexRh1-x)80B20 alloys Physical Review B, 42 (1). pp. 1070-1073. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v42/i1/p1070_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.42.1070


Magnetism in amorphous alloys of (FexRh1-x)80B20 (1 ≥ x ≥ 0.25) has been investigated. We find evidence for a sizable moment on rhodium. Our data suggest that the moment is induced discontinuously when Rh atoms have at least 4 Fe near neighbors. The 57Fe hyperfine field varies anomalously with the average transition-metal moment, which is at variance with the linear dependence reported in several Fe-transition metal-boron glasses. The observed Tc variation with x fits a coherent-potential-approximation model.

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