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BINLONG PAN
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Volume 46 All articles Published: 27 March 2023 Article ID 0059
BINLONG PAN XINYAO LUO JIEYANG FANG QIONG WU NENGJUN YU YUNDAN YU MINXIANG PAN HANGFU YANG HONGLIANG GE
We studied the effect of Eu$^{3+}$ substitution on the structural, magnetic and magnetocaloric properties of La$_{0.7-x}$Eu$_x$Ba$_{0.3}$MnO$_3$ (
x = 0, 0.02, 0.04, 0.06 and 0.08) (LEBMO). The material is prepared by solid-state sintering method. X-ray diffraction and structural refinement parameters indicate that all the synthesized samples have single-phase hexagonal structure. Magnetic measurements indicate that Curie temperature ($T_C$) of the samples decrease with increasing Eu$^{3+}$ content, because of the weakening of double exchange interaction. All samples present a second-order ferromagnetic to paramagnetic phase transition. Magnetic entropy change (${\Delta}S_M$) of the samples increases as the Eu$^{3+}$ content enhance. Whenx = 0.08, the $T_C$ of the sample is 258.6 K and the maximum value of ${\Delta}S_M$ reaches 3.27 J kg$^{-1}$ K$^{-1}$ at 5 T of a magnetic field. These results indicate that the material can be used as an ideal working material for the normal temperature magnetic refrigeration.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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