Magnetic moment formation at a dilute Ce(140) impurity in RCo_2 compounds

Details Magnetic moment formation at a dilute Ce(140) impurity in RCo_2 compounds Magnetic moment formation at a dilute Ce(140) impurity in RCo_2 compounds

2011-11-21

arxiv.org/abs/1111.4850v1

Journal of Applied Physics 107,09E122(2010)

Physics

Condensed Matter

Strongly Correlated Electrons

Presented in 11th Joint MMM/Intermag Conference, Washington 2010

Scientific paper

10.1063/1.3360343

A great deal of experimental work using perturbed angular correlation (PAC) has succeed in measuring hyperfine fields in Ce diluted in metallic systems, thus allowing the determination of the local impurity moment at low temperatures. Motivated by such experimental work on Ce(140) placed on a R site of the rare earth (R = Gd, Tb, Dy, Ho, Er) in RCo_2, we theoretically discuss, within a simple model, the local magnetic moments and thereby calculate the magnetic hyperfine fields. The results are in good agreement with the experimental data. For the sake of comparison we recall our previous results on Ta d-impurity embedded in the same hosts.

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