掺杂mn拓扑绝缘体Bi2Se3薄膜的磁热效应

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2025-04-14 DOI:10.1134/S0036024424703709

Hatem R. Alamri, Mahmoud A. Hamad

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引用次数: 0

摘要

本文采用现象学模型（PM）模拟了mn掺杂拓扑绝缘体Bi2Se3薄膜的磁热效应（MCE）。对Bi/Mn = 12.5和Bi/Mn = 23.6样品在< 1 \(\bar {1}\) 00 >方向的低磁场下的实验磁化进行了较好的模拟。测定了Bi/Mn = 12.5和Bi/Mn = 23.6样品在< 1 \(\bar {1}\) 00 >方向低磁场位移下的MCE参数。在Bi/Mn = 12.5的样品中，Mn含量高的样品比Mn含量低的样品更能提高MCE参数。Bi/Mn = 12.5和Bi/Mn = 23.6样品的MCE显示了在极低温冷却系统中的实际应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Magnetocaloric Effect in Mn-Doped Topological Insulator Bi2Se3 Thin Films

This work presents a simulation of the magnetocaloric effect (MCE) for Mn-doped topological insulator Bi₂Se₃ thin films using phenomenological model (PM). There is a good simulation of experimental magnetization for the Bi/Mn = 12.5 and Bi/Mn = 23.6 samples in low magnetic field along 〈1\(\bar {1}\)00〉 direction. The MCE parameters for the Bi/Mn = 12.5 and Bi/Mn = 23.6 samples in low magnetic field shift along 〈1\(\bar {1}\)00〉 direction has been determined. The high Mn content in Bi/Mn = 12.5 sample enhances MCE parameters more than Mn content lower sample. The MCE for Bi/Mn = 12.5 and Bi/Mn = 23.6 samples show practical use for cooling system in very low temperatures.

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.