Abstract
Structure, Curie temperature, and magnetostriction have been systemically investigated for Tb 0.27 Dy 0.73 Fe 1.9+x Ti 0.05 compounds using X-ray diffraction, vibrating sample magnetometer, and standard strain gauge technique. The samples show pure MgCu 2-type Laves phase when x≥0.2, and a small amount of second phases appear when x>0.2. The lattice parameters and the Curie temperatures change modestly with increasing Fe content. The magnetostriction of Tb 0.27 Dy 0.73 Fe 1.9+x Ti 0.05 compounds shows strong dependence on Fe content.
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