An investigation of structural and magnetic properties of the Nd16Co72-xRu xC11B coro-carbides

• Autor(a) principal: Paduani,C.
• Data de Publicação: 2008
• Outros Autores: Valcanover,J. A., Ardisson,J. D., Yoshida,M. I.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Physics
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332008000200008
• topic: Rare-earths; Permanent magnets; Carbides; Borides; Ferromagnetism; Antiferromagnetism

Nd16Co72-xRu xC11B boro-carbides have been prepared by arc melting and studied by X-ray diffraction and magnetization measurements. X-ray diffraction results confirm that all the prepared alloys possess the tetragonal 2:14:1 (P4(2)/mmm) hard magnetic phase. The observed decrease of the magnetization and Curie temperature indicate the development of antiferromagnetic spin correlations with the increase of the Ru content. The combined addition of B and C is favorable to the formation and stabilization of the tetragonal phase in these compounds. At lower Ru contents the Curie temperature is higher than in the corresponding Co-based boride in spite of larger cell volumes.