48686 20200221144153.0 doi 10.1103/PhysRevB.93.094422 sideral 94693 ART-2016-94693 eng Midya, A. Large adiabatic temperature and magnetic entropy changes in EuTi O3 2016 Access copy available to the general public Unrestricted We have investigated the magnetocaloric effect in single and polycrystalline samples of quantum paraelectric EuTiO3 by magnetization and heat capacity measurements. Single crystalline EuTiO3 shows antiferromagnetic ordering due to Eu2+ magnetic moments below TN=5.6K. This compound shows a giant magnetocaloric effect around its Néel temperature. The isothermal magnetic entropy change is 49Jkg-1K-1, the adiabatic temperature change is 21 K, and the refrigeration capacity is 500Jkg-1 for a field change of 7 T at TN. The single crystal and polycrystalline samples show similar values of the magnetic entropy and adiabatic temperature changes. The large magnetocaloric effect is due to suppression of the spin entropy associated with the localized 4f moment of Eu2+ ions. The giant magnetocaloric effect, together with negligible hysteresis, suggest that EuTiO3 could be a potential material for magnetic refrigeration below 40 K. info:eu-repo/grantAgreement/ES/MINECO/MAT2012-38318-C03-01 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.836 2016 PHYSICS, CONDENSED MATTER 18 / 67 = 0.269 2016 Q2 T1 2.339 2016 Electronic, Optical and Magnetic Materials 2016 Q1 Condensed Matter Physics 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Mandal, P. Rubi, K. Chen, R. Wang, J.S. Mahendiran, R. (orcid)0000-0002-4078-6808 Lorusso, G. (orcid)0000-0002-8028-9064 Evangelisti, M. Universidad de Zaragoza 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 93, 9 (2016), 094422 [7 pp] Phys. Rev. B, Condens. matter mater. phys. Physical Review B. Condensed Matter and Materials Physics 1098-0121 1644646 http://zaguan.unizar.es/record/48686/files/texto_completo.pdf Versión publicada 122283 http://zaguan.unizar.es/record/48686/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:48686 articulos driver 2020-02-21-13:08:24 ARTICLE