Cryogenic magnetocaloric effect in distorted double-perovskite Gd2ZnTiO6

Ziyu Yang; Jun-Yi Ge; Shuangchen Ruan; Hongzhi Cui; Yu-Jia Zeng

doi:10.1039/D1TC01789F

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Cryogenic magnetocaloric effect in distorted double-perovskite Gd₂ZnTiO₆†

Ziyu Yang,

^ab Jun-Yi Ge,^c Shuangchen Ruan,

^a Hongzhi Cui*^b and Yu-Jia Zeng

*^a

Author affiliations

* Corresponding authors

^a College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, P. R. China
E-mail: yjzeng@szu.edu.cn

^b Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, P. R. China
E-mail: h.z.cui@szu.edu.cn

^c Materials Genome Institute, Shanghai University, Shanghai, P. R. China

Abstract

Herein, we report on the magnetic and magnetocaloric properties of a distorted double-perovskite, Gd₂ZnTiO₆, through static magnetization and heat capacity measurements, and mean-field analysis. The most pronounced isothermal magnetic entropy change −ΔS_M, and relative cooling power RCP are found to be 53.5 J K⁻¹ kg⁻¹ and 620.6 J kg⁻¹, respectively, under a field change of 9 T at 3.1 K with a large adiabatic temperature change T_ad of 23.7 K, far exceeding the commercial cryo-coolant Gd₃Ga₅O₁₂ (GGG). The results suggest that Gd₂ZnTiO₆ is a potential working refrigerant material for the targeted liquefaction of helium.

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Article information

DOI: https://doi.org/10.1039/D1TC01789F
Article type: Communication
Submitted: 17 Apr 2021
Accepted: 09 May 2021
First published: 10 May 2021

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J. Mater. Chem. C, 2021,9, 6754-6759

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Cryogenic magnetocaloric effect in distorted double-perovskite Gd₂ZnTiO₆

Z. Yang, J. Ge, S. Ruan, H. Cui and Y. Zeng, J. Mater. Chem. C, 2021, 9, 6754 DOI: 10.1039/D1TC01789F

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Journal of Materials Chemistry C