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Crystal structures, magnetic and electronic properties of Y-Co-Cu-B system

E. BURZO1,* , I. CREANGA2, L. CHIONCEL3

Affiliation

  1. Faculty of Physics, Babes-Bolyai University RO-400084 Cluj-Napoca, Romania
  2. Politechnical University, Bucharest, Romania
  3. Departament of Physics, University of Oradea, Oradea Romania and Institute for Theoretical Physics, Computational Physics, Graz University of Technology, A-8010, Graz, Austria

Abstract

The YCo4-xCuxB series form solid solutions in the composition range x ≤ 1. The compounds are ferromagnetically ordered. Both the saturation magnetizations and Curie temperatures decrease when increasing copper content. The reciprocal susceptibilities follow a Curie-Weiss type behaviour. Band structure calculations show a parallel diminution of cobalt moments, at 2c and 6i sites, when increasing Cu content. The induced Y4d band polarizations are antiparallely oriented to cobalt moments and dependent on Y4d-Co3d short range exchange interactions. Finally, the magnetic behaviour of cobalt in analysed..

Keywords

Rare-earth compounds, Band structures, Magnetic properties, Y-Co-Cu-B.

Submitted at: Feb. 25, 2008
Accepted at: April 4, 2008

Citation

E. BURZO, I. CREANGA, L. CHIONCEL, Crystal structures, magnetic and electronic properties of Y-Co-Cu-B system, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 4, pp. 798-800 (2008)