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

• Type: Article in International Scientific Journal
• Date: 2014

Authors

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

Journal

Title: Physical Review B - Condensed Matter and Materials Physics

Vol. 90

ISSN: 1098-0121

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 37 Citations

Scopus - 38 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7