Direct and Inverse Magnetocaloric effects in A-site ordered PrBaMn2O6 manganite in low magnetic fields

Autor:	Aliev, A. M., Gamzatov, A. G., Batdalov, A. B., Kalitka, V. S., Kaul, A. R.
Rok vydání:	2010
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Materials Science
Zdroj:	Journal of Alloys and Compounds 509 (2011) L1-L3
Druh dokumentu:	Working Paper
DOI:	10.1016/j.jallcom.2011.02.058
Popis:	The magnetocaloric effect (MCE) of A-site ordered PrBaMn2O6 manganite has been studied by direct methods and by the specific heat measurements. Direct measurements of the MCE in low magnetic fields were performed using recently proposed modulation technique and by classic direct method in high fields. Direct and inverse MCE are observed at Curie and Neel points correspondingly. A value of the inverse MCE in the heating run is less than in the cooling regime. This effect can be attributing to competition between ferromagnetic and antiferromagnetic interactions. Indirectly estimated and direct MCE values considerably differ in around first order AF transition. Comment: 8 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1009.1228 Zobrazit plný text záznamu View this record from Arxiv