Investigation of impact of the annealing on magnetothermal properties of Zn0.2Mn0.8Fe2O4 ferrite nanoparticles

Liu, N.N.; Alekhina, Y.A.; Pyatakov, A.P.; Perov, N.S.; Kovalev, B.B.; Sukhorukov, G.B.; Tishin, A.M.; Moriwaki, T.; Nakazawa, K.; Ichiyanagi, Y.

Авторы: Liu Nan N., Alekhina Yulia A., Pyatakov Alexander P., Perov Nikolai S., Kovalev Boris B., Sukhorukov Gleb B., Tishin Alexander M., Moriwaki Tomomasa, Nakazawa Kenta, Ichiyanagi Yuko
Журнал: IEEE Magnetics Letters
Год издания: 2023
Издательство: Institute of Electrical and Electronics Engineers
Местоположение издательства: Piscataway, NJ, United States
Первая страница: 1
Последняя страница: 5
DOI: 10.1109/LMAG.2022.3233222
Аннотация: Magnetic and magnetothermal properties of annealed Zn 0.2 Mn 0.8 Fe 2 O 4 nanoparticles with diameter value d, ranging from 9 nm to 35 nm have been investigated and compared with earlier investigated unannealed Zn 0.2 Mn 0.8 Fe 2 O 4 MNPs. A single-phase spinel structure was observed in both types of MNPs. It has been demonstrated that for the large annealed Zn 0.2 Mn 0.8 Fe 2 O 4 nanoparticles (24.7 nm, 31.4 nm, 35.1 nm) value of specific absorption rate (SAR) is proportional to amplitude of magnetic field as ∼ H 4 . However, for earlier investigated unannealed Zn 0.2 Mn 0.8 Fe 2 O 4 MNPs superquadratic dependence SAR∼ H 5 have been found starting from 13nm. Significant change of dependence of character of SAR(d) may be explained by low values of hysteresis area of small annealed MNPs and, thus, dominant role of Neel relaxation in these annealed Zn 0.2 Mn 0.8 Fe 2 O 4 nanoparticles.
Добавил в систему: Перов Николай Сергеевич

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Investigation of impact of the annealing on magnetothermal properties of Zn0.2Mn0.8Fe2O4 ferrite nanoparticlesстатья

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