Spontaneous magnetization above T-C in polycrystalline La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Turcaud, JA (Autor) Outra; pereira, a. m. (Autor) FCUP; Sandeman, KG (Autor) Outra; amaral, j. s. (Autor) FCUP; Morrison, K (Autor) Outra; Berenov, A (Autor) Outra; Daoud Aladine, A (Autor) Outra; Cohen, LF (Autor) Outra

Revista

Título: Physical Review B - Condensed Matter and Materials Physics

Vol. 90

ISSN: 1098-0121

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 37 Citações

Scopus - 38 Citações

Outras Informações

ID Authenticus: P-009-MT1

DOI: 10.1103/physrevb.90.024410

Abstract (EN): In the present work, spontaneous magnetization is observed in the inverse magnetic susceptibility of La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3 compounds above T-C up to a temperature T*. From information gathered from neutron diffraction, dilatometry, and high-field magnetization data, we suggest that T* is related to the transition temperature of the low-temperature (high magnetic field) magnetic phase. In the temperature region between T* and T-C, the application of a magnetic field drives the system from the high-temperature to low-temperature magnetic phases, the latter possessing a higher magnetization.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7