Abstract
The La0.88Sr0.12MnO3 nanocrystalline is synthesized by sol-gel chemical method, shows a typical paramagnetic-ferromagnetic phase transition at 280 K. A thorough study on critical behavior analysis of magnetization isotherms is performed by various techniques such as modified Arrott plot, Kouvel-Fisher method, and critical isotherm analysis. Based on these methods, the accurate critical exponents (β = 0.5936(2) and γ = 1.0928(6)) are determined. Both critical exponents (β and γ) have been confirmed to fulfill the Widom scaling relation δ = 1+\(\frac{\gamma }{\beta }\). Moreover, these exponents also obey the single scaling equation of \(\frac{H}{{M}^{\delta }}=h(\frac{\varepsilon }{{H}^{1/\beta }})\). The obtained critical exponents are closer to the theoretical prediction of mean-field model but shows a slight deviation from theoretical values. We proposed that this deviation is due to the inherent disorder effect as the dimension of La0.88Sr0.12MnO3 particles reduced to nanoscale.
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La0.88Sr0.12MnO3 nanocrystalline is prepared by the sol-gel method.
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The critical properties associated with the ferromagnetic transition are investigated by various techniques.
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The critical exponents show a slight deviation from theoretical values due to the inherent disorder effect when the La0.88Sr0.12MnO3 particles reduced to nanoscale.
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Acknowledgements
This work was supported by HPU Fundamental Research Funds (Grant NO. 19XJK23R, NO. 19XJK10R, NO. 19XJK22R, NO. 20XJK07R) and Hubei Provincial Department of Education research (No. Q20204501).
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Shi, D., Ye, M., Zhao, L. et al. Critical properties of perovskite manganite La0.88Sr0.12MnO3 nanocrystalline. J Sol-Gel Sci Technol 107, 725–732 (2023). https://doi.org/10.1007/s10971-023-06090-1
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DOI: https://doi.org/10.1007/s10971-023-06090-1