Structural, magnetic, and magnetocaloric studies of the potassium diphosphate KCrP2O7

作者

Assaad Elouafi¹ , Sara Ezairi² , Fatima Lmai² , Abdeslam Tizliouine¹

1. LMPGI, Université Hassan II de Casablanca, Ecole Supérieure de Technologie
2. LPMAT, Faculty of Sciences Ain Chock, Hassan II University of Casablanca

会议/活动

International Conference on Energy, Materials and Environmental Science, July 2023 (Casablanca, Morocco)

海报摘要

The structural, magnetic, and magnetocaloric characteristics of potassium diphosphate KCrP2O7 were thoroughly investigated.. The crystalline structure was analysed employing X-Ray Diffraction (XRD), infrared, and Raman spectroscopy at around room temperature. Detailed Rietveld refinement analysis reveals that the compound adopts a complex monoclinic structure with the space group P21/c and the lattice parameters: a = 7.357Ǻ, b = 10.011 Ǻ, and c = 8.202 Ǻ. Infrared and Raman spectra were examined and analyzed based on the structural peculiarities of the "P" _"2" "O" _"7" ^"-4 " anion and the (K+, Cr3+) cation. Magnetic entropy change (-∆SM) induced by the magnetic field, was determined by employing the thermodynamic Maxwell’s relation. At H=50 kOe, the ("-∆" "S" _"M" ^"Max" ) and RCP (magnetic refrigeration capacity) near TN show a value of 4.4 J.kg-1 .K-1 and 30.06 J.kg-1, respectively for the KCrP2O7 compound.

关键词

Potassium diphosphate KCrP2O7, Magnetocaloric studies, Infrared spectroscopy, Raman spectroscopy, RCP

研究领域

Material Sciences

参考文献

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附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

Data sharing not applicable to this poster as no datasets were generated or analyzed during the current study.

知识共享许可协议

Copyright © 2023 Elouafi et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.