Structural, magnetic and magnetocaloric properties in R2CoMnO6 (R = Dy, Ho, and Er)

The crystal structure, magnetic properties and magnetocaloric effect (MCE) in R2CoMnO6(R = Dy, Ho, and Er) ceramics were investigated. The R2CoMnO6 crystallized in the monoclinic structure belonging to the P21/n space group. The compounds revealed three magnetic phase transitions, and according thre...

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Bibliographic Details
Published inCeramics international Vol. 43; no. 17; pp. 15856 - 15861
Main Authors Jia, Youshun, Wang, Qiang, Wang, Ping, Li, Lingwei
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2017
Subjects
Double perovskites
Magnetic entropy change
Magnetic refrigeration
Magnetocaloric effect
Magnetic refrigeration
Magnetic entropy change
Double perovskites
Magnetocaloric effect
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Summary:The crystal structure, magnetic properties and magnetocaloric effect (MCE) in R2CoMnO6(R = Dy, Ho, and Er) ceramics were investigated. The R2CoMnO6 crystallized in the monoclinic structure belonging to the P21/n space group. The compounds revealed three magnetic phase transitions, and according three peaks appeared in the temperature dependence of magnetic entropy change curves. A considerable values of maximum magnetic entropy change (-∆SMmax) and the relative cooling power (RCP) for R2CoMnO6 (R = Dy, Ho, and Er) at low temperature around Curie temperature TC were observed. Moreover, the normalized ∆SM(T) curves around Curie temperature for all the present R2CoMnO6 collapse onto a single universal curve, which confirmed that the observed paramagnetic-ferromagnetic phase transition for all the samples was of a second order.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2017.08.158