Аннотация:The magnetocrystalline anisotropy in the single-crystal hydrides SmFe 11-xCo xTiH y was investigated. X-ray diffraction performed on the hydrogenated samples showed that all the samples have ThMn 12 type structure. The lattice parameters and the unit cell volume were slightly changed in comparison with the host samples. Magnetization isotherms present a FOMP transition in case of low cobalt concentration.