Structure, magnetic and magnetocaloric properties of Pr$_{0.5}$Sr$_{0.5}$MnO$_3$ with cobalt substitution
XINYAO LUO HANGFU YANG SIHAO HUA QIONG WU NENGJUN YU YUNDAN YU PENGYUE ZHANG HONGLIANG GE
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We experimentally study the structure, magnetic and magnetocaloric effect of Pr$_{0.5}$Sr${0.5}$Mn$_{1–x}$Co$_x$O$_3$ (0.00${\leq}$x${\leq}$ 0.08) with the substitution of Co. The results of the refined XRD data show that all the samples have a tetragonal structure with the I4/mcm space group. The small amount of Co substitution does not change the structure of the materials. However, the magnetization data indicate that the charge-ordered antiferromagnetic state vanishes with a small amount of Co substitution. The Curie temperature of samples can be effectively tuned with the substitution and it decreases from 270 to 175 K. With a magnetic field change of 15 kOe, the maximum magnetic entropy change (|${\varDelta}$$S$$_M$|max)of the samples increases to 1.21 J kg$^{-1}$ K$^{-1}$ at $T$$_C$ = 255 K for x = 0.02, and then decrease monotonically. All samples undergo second-order phase transition. The wide operating range makes our compounds as good refrigeration candidates.
XINYAO LUO1 HANGFU YANG1 SIHAO HUA2 QIONG WU1 NENGJUN YU1 YUNDAN YU1 PENGYUE ZHANG1 HONGLIANG GE1
Volume 45, 2022
All articles
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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