Pressure study of pure and Rh-doped RuSr2GdCu2O8 magnetic superconductors

Autor(es):Mostrar menos -

Torikachvili, M. S. ; Steiger, M. ; Harding, L. ; Bird, D. ; Dilley, N. R. ; Gomez, S. ; O'Brien, J. R. ; Jardim, R. F. ; Takano, Y ; Hershfield, SP ; Hirschfeld, PJ ; Goldman, AM

• Tipo de documento: Artigo Científico
• Fonte: MAGNETIC FIELDS IN THE UNIVERSE: FROM LABORATORY AND STARS TO PRIMORDIAL STRUCTURES; v. 850, p. 2-pg., 2006-01-01.

Resumo

We carried out an investigation of the effect of quasi-hydrostatic pressures up to 1.2 GPa in pure and Rh-doped RuSr2GdCu2O8 compounds, by means of measurements of electrical resistivity in magnetic fields up to 9 T. The onset temperatures for superconductivity, and for magnetic order in the undoped RuSr2GdCu2O8 compound are T-c approximate to 50 K, and T-m approximate to 133 K, respectively. The partial substitution of Rh for Ru lowers both these transitions temperatures. However, the effect of pressure for all compositions studied, up to 10% substitution, was to increase both T,, and Tm. The effect of pressure on the upper critical magnetic field of the pure, and Rh-doped compounds is discussed. (AU)

• Processo FAPESP: 99/10798-0 - Estudo de fenômenos intergranulares em óxidos cerâmicos
• Beneficiário: Reginaldo Muccillo
• Modalidade de apoio: Auxílio à Pesquisa - Temático