Magnetic behavior of a nonextensive S-spin system: Possible connections to manganites

authors	Reis, MS; Araujo, JP; Amaral, VS; Lenzi, EK; Oliveira, IS
nationality	International
journal	PHYSICAL REVIEW B
keywords	FULLY-DEVELOPED TURBULENCE; TIME-DEPENDENT SOLUTIONS; ANOMALOUS DIFFUSION; TSALLIS STATISTICS; THERMOSTATISTICS; EQUATION; MECHANICS; CLUSTERS; ENTROPY
abstract	We analyzed the magnetic behavior of a S-spin system within the framework of Tsallis nonextensive statistics, employing the normalized approach. Unusual properties on magnetization, entropy, and susceptibility emerge as a consequence of the nonextensivity. We further show that the nonextensive approach can be relevant to the field of manganites, materials which exhibit long-range interactions and fractality, two basic ingredients for nonextensivity. Our results are in qualitative agreement with experimental data in La0.67Ca0.33MnO3 and Pr0.5Ca0.5Mn0.95Ga0.05O3 manganites.
publisher	AMERICAN PHYSICAL SOC
issn	1098-0121
year published	2002
volume	66
issue	13
digital object identifier (doi)	10.1103/PhysRevB.66.134417
web of science category	Physics, Condensed Matter
subject category	Physics
unique article identifier	WOS:000179067900082