Abstract
The influence of iron substitution by cobalt on the structural and magnetostrictive characteristics of (Tb,Ho)(Fe, Co)2-type compounds is investigated. It is established that cobalt doping of the Tb0.16Ho0.84Fe2 compound leads to an increase in the Curie temperature and a decrease in the lattice constant. It is shown that the anisotropic magnetostriction of the Tb0.16Ho0.84Fe2−xCox (x≤0.4) compounds significantly exceeds the volumetric one in the moderate (up to 1.2T) magnetic fields. The Tb0.16Ho0.84Fe1.8Co0.2 composition with the highest saturation magnetostriction and magnetostrictive susceptibility is found.
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