Influence of substitutions and hydrogenation on the structural and magnetic properties of (R’R’’)2Fe17 (R’, R’’ = Sm, Er, Ho): Compositions with promising fundamental characteristics

•Hydrogenation effect on structure and magnetism of R2Fe17-type compounds is studied.•Structural changes in alloys are accessed by XRD.•High-field magnetization study at low temperatures provide data on exchange parameter.•Features of change in hydrogen capacity with a change in the composition are...

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