Crystal structure and magnetic properties of cerium-doped YIG: Effect of doping concentration and annealing temperature

Autor: F. Sánchez-De Jesús, Ana María Bolarín-Miró, A. Barba-Pingarrón, C.A. Cortés-Escobedo, Esperanza Baños-Lopez
Rok vydání: 2018
Předmět:
Zdroj: Journal of Alloys and Compounds. 730:127-134
ISSN: 0925-8388
Popis: We present a study of the effect of the substitution of Y 3+ by Ce 3+ on the crystal structure and magnetic properties of cerium-doped yttrium iron garnet (YIG), Ce x Y 3- x Fe 5 O 12 (0 ≤ x ≤ 0.5), which was synthesized using high-energy ball milling. In particular, we aimed to study the effect of the cerium concentration and the annealing temperature on the crystal structure and magnetic properties of the Ce-doped YIG. Fe 2 O 3, Y 2 O 3 , and Ce 2 (CO 3 ) 3 were mixed in a stoichiometric ratio, milled for 5 h, and annealed at different temperatures, from 1000 to 1400 °C. The X-ray diffraction pattern confirmed the presence of CeO 2 as a secondary phase, together with the formation of the YIG structure, at all studied temperatures and compositions. A complete solid solution of Ce 3+ in the garnet structure was obtained for the samples annealed at 1400 °C. Increasing the Ce 3+ content resulted in a consistent decrease in the saturation magnetization and a slight decrease in the coercivity, resulting from the insertion of Ce 3+ into the YIG structure and the presence of CeO 2 as a secondary phase.
Databáze: OpenAIRE