Details

Autor(en) / Beteiligte

• Vazquez, M
• Garcia-Beneytez, J M
• Arcas, J
• Castano, F J
• Mira, J
• Rivas, J
• Breijo, M P
• Senaris-Rodriguez, M A

Titel

Magnetic behaviour near the magnetic-phase transition in La sub(1-x)Sr sub(x)CoO sub(3) (0.20 less than or equal to x less than or equal to 0.30) perovskites

Ist Teil von

• Journal of magnetism and magnetic materials, 1999-01, Vol.196, p.546-548

Erscheinungsjahr

1999

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• Measurements of the temperature dependence of the magnetization (and parameters like coercivity and susceptibility) of La sub(1-x)Sr sub(x)CoO sub(3) (0.20 less than or equal to x less than or equal to 0.30) perovskites are presented. Particular attention is given to the interval of temperatures containing the ferro-paramagnetic phase transition. Curie temperature values lower than those reported previously and critical exponents are given. Additionally, the coercivity as well as the parameters of the law of approach to magnetic saturation are experimentally determined. Anomalies in Curie temperature, coercivity and law of approach to saturation are introduced confirming a non-conventional transition from ferromagnetic to paramagnetic states.