期刊论文

Min Liu

英文

Journal of Superconductivity and Novel Magnetism

1557-1939

2022

35

11

3271-3275

10.1007/s10948-022-06376-5

This research was supported partly by the National Undergraduate Innovation and Entrepreneurship Training Program Support Projects of China (Grant No. 20200112), the Natural Science Foundation of Hunan Province, China (Grant No. 2020JJ4517), Research Foundation of Education Bureau of Hunan Province, China (Grant No. 19C1621, 19A434), and National Natural Science Foundation of China (Grant No. 12105137).

本校为第一机构

In this paper, LaFe0.75Cr0.25O3 was synthesized by a citric acid combusting sol-gel method. The basic structural information is reflected by XRD. According to Mossbauer spectroscopy, the inhomogeneous distribution of Cr contributes to magnetic dilution, thus appearing the coexistence of singlet and sextet. Simultaneously, the rare superparamagnetic relaxation appears due to "critical superparamagnetism" caused by small magnetic clusters with intervening sizes. Oxygen vacancies of synthesized sample are also found. The DC magnetization curve reveals the magnetization reversal phenomenon, which ...