The room temperature metastable/stable phase relationships in the pseudo-binary Gd_5Si_4-Gd_5Ge_4 system

摘要

The phase relationships, crystallography and magnetic phase diagram of the pseudo-binary Gd_5Si_4-Gd_5Ge_4 system in the as-cast state is described. Three extended solid solution regions were confirmed: the Si-rich alloys which have the orthorhombic Gd_5Si_4-type structure, the intermediate region alloys with the monoclinic Gd_5Si_2Ge_2-type structure and the Ge-rich alloys which have the orthorhombic Sm_5Ge_4-type structure. The sample preparation techniques and the methods used for determining the phase purity of the alloys are also discussed.