Tuning the magnetocrystalline anisotropy in $R$CoPO by means of $R$ substitution: a ferromagnetic resonance study

Authors :: Prando, G.
Alfonsov, A.
Pal, A.
Awana, V. P. S.
Büchner, B.
Kataev, V.
Source :: Phys. Rev. B 94, 024412 (2016)
Publication Year :: 2016
Abstract: We report on broad-band electron spin resonance measurements performed within the itinerant ferromagnetic phase of $R$CoPO ($R$ = La, Pr, Nd and Sm). We reveal that the $R$ substitution is highly effective in gradually introducing a sizeable easy-plane magnetocrystalline anisotropy within the Co sublattice. We explain our results in terms of a subtle interplay of structural effects and of indirect interactions between the $f$ and $d$ orbitals from $R$ and Co, respectively.<br />Comment: 12 pages, 15 figures

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