Author(s)

Jin Hao ^1,2, Fengwu Du ², Qing Lin ^1,2, Pan Dong ², Yun He ², Fang Yang ¹

Affiliation(s)

¹ College of Biomedical Information and Engineering, Hainan Medical University, Haikou, 571199, China
² College of Physics and Technology, Guangxi Normal University, Guilin, 541004, China

Corresponding Author

Pan Dong

ABSTRACT

In this paper, perovskite La_1-xSr_xMnO₃ powder was successfully prepared by Sol-gel method. The effects of different doping amount, different pH value , different calcination temperature and different calcination time on the structure and magnetic properties of La_1-xSr_xMnO₃ material were studied by XRD, SEM, FT-IR and VSM. When the doping amount is x≥0.3, the XRD shows that the sample is the perovskite material with cubic structure, and the doping amount is x=0.3, the SEM shows that the sample has a better particle morphology. The analysis of different pH values shows that the sample La_0.7Sr_0.3MnO₃ has the maximum specific saturation magnetization of 62.42 emu/g and the maximum coercivity of 66.87 Oe at pH=7. The analysis of different calcination temperatures shows that the sample La_0.7Sr_0.3MnO₃ has the maximum specific saturation magnetization of 62.42 emu/g and the maximum coercivity of 66.87 Oe, the calcination temperature is 1000℃. Different calcination time has little effect on the specific saturation magnetization and coercivity of the sample La_0.7Sr_0.3MnO₃ , but it shows a decreasing trend. When the calcination time is 2h, it has the largest specific saturation magnetization and coercivity.

KEYWORDS

Sol-gel, different preparation conditions, structure, magnetic properties

CITE THIS PAPER

Jin Hao, Fengwu Du, Qing Lin, Pan Dong, Yun He, Fang Yang, Structure-magnetic and Morphology Properties of La_1-xSr_xMnO₃ Nanomaterials by sol-gel. Composites and Nano Engineering (2023) Vol. 2: 19-29. DOI: http://dx.doi.org/10.23977/compne.2023.020102.

REFERENCES

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