Magnetic properties and magnetocaloric effect of Mn doping orthoferrites RFe0.5Mn0.5O3 (R = Gd, Tb, Dy and Ho)
Magnetic properties and magnetocaloric effect of Mn doping orthoferrites RFe0.5Mn0.5O3 (R = Gd, Tb, Dy and Ho)
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Mn掺杂正铁氧体RFe0.5Mn0.5O3(R = Gd、Tb、Dy和Ho)的磁性能和磁热效应
DOI:
10.1016/j.matlet.2020.128148
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发表时间:
2020-09
影响因子:
3
通讯作者:
Cheng Zhao-Hua
中科院分区:
文献类型:
--
作者:
Su Lei;Zhang Xiang-Qun;Dong Qiao-Yan;Yang Hai-Tao;Cheng Zhao-Hua
We have investigated the magnetism and magnetocaloric effects of RFe 0.5 Mn 0.5 O 3 (R= Gd, Tb, Dy and Ho). The Neél temperature of RFe 0.5 Mn 0.5 O 3 is near room temperature. The compounds except HoFe 0.5 Mn 0.5 O 3 present a spin reorientation (SR) behavior also around room temperature. The maximum values of magnetic entropy change of RFe 0.5 Mn 0.5 O 3 (R= Gd, Tb, Dy and Ho) compounds (Δ S M max) for 0–70 kOe are 23.3 J/kg K, 9.3 J/kg K, 9.5 J/kg K and 12.6 J/kg K, respectively. The relative refrigeration capacity (RCP) values are 385.5 J/kg, 370.3 J/kg, 324.4 J/kg and 389.8 J/kg, respectively. These results indicate that RFe 0.5 Mn 0.5 O 3 compounds are potential magnetic refrigerants.
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