Abstract

The compounds YTi(Fe1−xCox)11 form complete solid solutions (0≤X≤1) all of which crystallize in the ThMn12-type tetragonal structure. The substitution effects of Fe with Co on saturation magnetization and Curie temperature have been investigated. A neutron-diffraction study has been carried out on YTiCo11 and YTi(Co0.5Fe0.5)11. A strong preferential site occupation for Co and Ti atoms is observed. A detailed analysis of crystallographic and magnetic arrangement is presented.

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