Low field magnetocaloric effect and heat capacity of A-site ordered NdBaMn2O6 manganite

Autor:	Aliev, A. M., Gamzatov, A. G., Kalitka, V. S., Kaul, A. R.
Rok vydání:	2012
Předmět:	Condensed Matter - Materials Science Condensed Matter - Strongly Correlated Electrons
Zdroj:	Solid State Communications 151 (2011) 1820-1823
Druh dokumentu:	Working Paper
DOI:	10.1016/j.ssc.2011.08.018
Popis:	The magnetocaloric effect (MCE) in the A-site ordered manganite NdBaMn2O6 is studied. The MCE in this compound has an anomalous behavior. In low magnetic fields, the abrupt transitions between direct and inverse magnetocaloric effect are observed. In a relatively strong magnetic field H=11 kOe the direct and inverse effects are observed only at cooling, while the heating mode reveals only an inverse MCE. The value of the MCE (-{\Delta}S=0.7 J/kg K and {\Delta}S= 1.02 J/kg K for {\Delta}H=11 kOe) does not reach high values, but the proximity of the effects occurring at room temperatures expects the use of both effects in the magnetic cooling technology. Comment: 10 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1202.4003 Zobrazit plný text záznamu View this record from Arxiv