Field- and temperature-induced evolution of the magnetocaloric effect in Ba0.3Sr1.7Co2Fe12O22single crystals with heliconical magnetism

Autor:	Byung-Gu Jeon, Young Sun, Liqin Yan, Sae Hwan Chun, Shi Peng Shen, Kee Hoon Kim, Kwang Woo Shin
Rok vydání:	2013
Předmět:	Crystal Physics Condensed matter physics Magnetism Transition temperature Magnetic refrigeration General Materials Science Atmospheric temperature range Condensed Matter Physics Single crystal Néel temperature Magnetic field
Zdroj:	Journal of Physics: Condensed Matter. 25:256006
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/25/25/256006
Popis:	The magnetocaloric effect (MCE) associated with the spin transitions of alternating longitudinal conical (ALC)-mixed conical (MC) and MC-ferrimagnetic (FIM) states in a Ba0.3Sr1.7Co2Fe12O22 single crystal has been investigated. For magnetic field directions applied along either the [120] or [001] directions, the crystal is found to exhibit the conventional and inverse MCE near the ALC-MC (T(N1) = 235 K) and MC-FIM (T(N2) = 348 K) states, respectively. The dependence of the magnetic entropy on the magnetic field also exhibits such sign change behaviors in the MCE, which is attributed to the magnetic field induced gradual collapse of heliconical magnetic order.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2a80e755ff9bc976d15da050a9e5d3b https://doi.org/10.1088/0953-8984/25/25/256006 Zobrazit plný text záznamu