High-temperature properties of the double perovskite: Electrical resistivity, magnetic susceptibility, and ESR

D. Niebieskikwiat, R. Sánchez, A. Caneiro, L. Morales, M. Vásquez-Mansilla, F. Rivadulla, L. Hueso

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

98 Citas (Scopus)

Resumen

In this work we present electrical resistivity, magnetic susceptibility, and electron spin resonance data at high temperature of the (Formula presented) double perovskite. We found between 300 K and 900 K two metal-insulator transition temperatures at (Formula presented) K and (Formula presented) K respectively. Below the first transition, the material is metallic and magnetically ordered. Above 590 K, (Formula presented) shows a metallic behavior again, while in the range (Formula presented) we observed a weak localization. The magnetic susceptibility can be described taking into account localized and itinerant electrons. The paramagnetic resonance of (Formula presented) ions with (Formula presented) can be studied in temperature. Above (Formula presented) the linewidth data present similar behavior to that of manganese perovskites, with a relaxation mechanism related to spin-spin interactions. The intensity of the resonance line decreases with T faster than a Curie law expected, due to a reduction in the number of localized spins of the (Formula presented) ions. At high temperatures (Formula presented) K) we observe a second paramagnetic resonance line with (Formula presented) associated with a small amount of (Formula presented) ions.

Idioma originalInglés
Páginas (desde-hasta)3340-3345
Número de páginas6
PublicaciónPhysical Review B - Condensed Matter and Materials Physics
Volumen62
N.º5
DOI
EstadoPublicada - 2000
Publicado de forma externa

Huella

Profundice en los temas de investigación de 'High-temperature properties of the double perovskite: Electrical resistivity, magnetic susceptibility, and ESR'. En conjunto forman una huella única.

Citar esto