Spontaneous magnetization above T-C in polycrystalline La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3
authors Turcaud, JA; Pereira, AM; Sandeman, KG; Amaral, JS; Morrison, K; Berenov, A; Daoud-Aladine, A; Cohen, LF
nationality International
journal PHYSICAL REVIEW B
keywords DOUBLE EXCHANGE; MANGANITES; PEROVSKITE; BEHAVIOR; PHASE; DISORDER; POINT; FIELD
abstract 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.
publisher AMER PHYSICAL SOC
issn 1098-0121
year published 2014
volume 90
issue 2
digital object identifier (doi) 10.1103/PhysRevB.90.024410
web of science category Physics, Condensed Matter
subject category Physics
unique article identifier WOS:000339093700003
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