Tulapurkar AA, Mishra SN, Pillay RG, Salunke HG, Das GP, Cottenier S. Local magnetism of isolated Mo atoms at substitutional and interstitial sites in Yb metal: experiment and theory.
PHYSICAL REVIEW LETTERS 2000;
85:1978-1981. [PMID:
10970662 DOI:
10.1103/physrevlett.85.1978]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/1999] [Revised: 03/31/2000] [Indexed: 05/23/2023]
Abstract
We have observed large 4d moments on isolated Mo atoms at substitutional and octahedral interstitial lattice sites in Yb metal, showing Curie-Weiss local susceptibility and a Korringa-like spin relaxation rate. The interstitial Mo atoms, despite strong hybridization with the Yb neighbors, show rather small Kondo temperature ( T(K)</=60 K), implying high moment stability. While magnetism of Mo at the substitutional site is consistent with Kondo-type d-sp interaction, we suggest that moment stability at the interstitial site is strongly influenced by ferromagnetic polarization of Yb-4f5d band electrons.
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