The Effects of the Size of Sample and Rate of Magnetic Field on the Hysteresis of Lafesi-Based Magnetic Refrigeration Materials

23 Pages Posted: 25 Nov 2024

See all articles by Zhiyong Zhang

Zhiyong Zhang

Taiyuan University of Science and Technology

Shuotong Zong

Taiyuan University of Science and Technology

Qi Guo

Taiyuan University of Science and Technology

Yan Zhang

Taiyuan University of Science and Technology

fenghua chen

Taiyuan University of Science and Technology

Zhigang Sun

Taiyuan University of Science and Technology

Hongxia Liu

Taiyuan University of Science and Technology

Zhe Chen

Taiyuan University of Science and Technology

Kewei Zhang

Taiyuan University of Science and Technology

Abstract

The paper examines the magnetic properties and hysteresis of La-Fe-Si-based magnetic refrigeration materials with different sizes and magnetic field rates. It is observed that both the thermal hysteresis and magnetic hysteresis increased as the sample size increased due to the lower response of large-sized samples to thermal effects. A double peak in the up-field magnetic entropy change is observed in the magnetic entropy change curve of the 2*2*2 sample, which can be improved by calculating down-field magnetic entropy change and average magnetic entropy change. The size of samples has little effect on the magnetic entropy change. Moreover, the magnetic hysteresis increases and then decreases with temperature increase and reaches the maximum near TC, which is similar to the magnetic entropy change. There is a correlation between the magnetic hysteresis and the magnetic entropy change. However, there is little difference between the values of maximum magnetic entropy change at different magnetic field rates and no obvious correlation with the magnetic field rate. The size of samples and the magnetic field rates impact hysteresis but less so on the magnetic entropy changes. This research enhances our understanding of the factors influencing lag and contributes to the development of magnetic refrigeration materials.

Keywords: La-Fe-Si, magnetocaloric effect, magnetic field rates, hysteresis, magnetic entropy change

Suggested Citation

Zhang, Zhiyong and Zong, Shuotong and Guo, Qi and Zhang, Yan and chen, fenghua and Sun, Zhigang and Liu, Hongxia and Chen, Zhe and Zhang, Kewei, The Effects of the Size of Sample and Rate of Magnetic Field on the Hysteresis of Lafesi-Based Magnetic Refrigeration Materials. Available at SSRN: https://ssrn.com/abstract=5032933 or http://dx.doi.org/10.2139/ssrn.5032933

Zhiyong Zhang

Taiyuan University of Science and Technology ( email )

China

Shuotong Zong (Contact Author)

Taiyuan University of Science and Technology ( email )

China

Qi Guo

Taiyuan University of Science and Technology ( email )

China

Yan Zhang

Taiyuan University of Science and Technology ( email )

China

Fenghua Chen

Taiyuan University of Science and Technology ( email )

Zhigang Sun

Taiyuan University of Science and Technology ( email )

China

Hongxia Liu

Taiyuan University of Science and Technology ( email )

China

Zhe Chen

Taiyuan University of Science and Technology ( email )

China

Kewei Zhang

Taiyuan University of Science and Technology ( email )

China

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
12
Abstract Views
76
PlumX Metrics