Abstract
The Tb 1− x Zr x Fe 2 compounds with x⩽0.5 crystallize in a cubic C15-type structure. Magnetic measurements were performed in the temperature range 4.2–950 K and external magnetic fields up to 9 T. All the compounds are ferrimagnetically ordered. The Curie temperatures and the spontaneous magnetizations, at 4.2 K, decrease when the zirconium contents increase. The iron magnetic moments and effective magnetic moments are little dependent on composition. The density of states (DOS) and magnetic moments are calculated using the fully relativistic Korringa–Kohn–Rostocker (KKR) band structure method. The disorder in the system has been accounted for by means of the coherent potential approximation (CPA). Finally, the magnetic behavior of iron in these compounds is analyzed.
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