Magnetic behavior of U(TxAl1-x)(2) compounds (T = Co, Ni, Mn)

摘要

Magnetic behavior and structural data of the U(TxAl1-x)(2) compounds, where T=Co, Ni and Mn, were reported. Magnetic measurements were performed in the temperature range 4.2-800 K and magnetic fields up to 7 T. The gradual replacement of Al by Co, Ni and Mn ions leads to the decrease of the effective magnetic moments per uranium ion, and of the paramagnetic Curie temperatures in absolute magnitude. This composition evolution of the two magnetic parameters of the U(TxAl1-x)(2) compounds suggests a gradual suppression of the spin fluctuations with replacing the Al ions by T ions.