Magnetic State and Magnetocaloric Effect of SmMnO3

Autor:	Cláudia A. da Silva, E. J. R. Plaza, Raul S. Silva, N. O. Moreno
Rok vydání:	2012
Předmět:	Condensed Matter::Materials Science Magnetization Materials science Condensed matter physics Magnetic refrigeration Orthorhombic crystal system Multiferroics Single phase Condensed Matter Physics Powder diffraction Electronic Optical and Magnetic Materials Magnetic field
Zdroj:	Journal of Superconductivity and Novel Magnetism. 26:2497-2499
ISSN:	1557-1947 1557-1939
Popis:	We present a study of magnetization and magnetocaloric effect for the SmMnO3 compound. This compound was synthesized by combustion reaction and its magnetic and structural properties studied by X-ray powder diffraction (XRD) and magnetization (M) measurements as a function of temperature and under magnetic fields. The XRD pattern at room temperature confirmed the presence of a single phase with orthorhombic structure. From magnetization versus temperature, we observe two magnetic orderings, the first one at 6 K due to Sm3+, and the other one at T N =57(2) K is the anti-ferromagnetic long-range ordering. The magnetic entropy change, ΔS M , was obtained from magnetization isotherms close to T N where it reaches a maximum value of about 8.0 J/kg K for an applied field of 7 T.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fcd5071fed30e08162ba91ebfda427b0 https://doi.org/10.1007/s10948-012-1727-6 Zobrazit plný text záznamu Full text from SpringerLink