Investigation of Impact of the Annealing on Magnetothermal Properties of Zn0.2Mn0.8Fe2O4 Nanoparticles

被引：0
|
作者：
Liu, Nan N. [1 ]
Alekhina, Yulia A. [1 ]
Pyatakov, Alexander P. [1 ]
Perov, Nikolai S. [1 ]
Kovalev, Boris B. [1 ]
Sukhorukov, Gleb B. [2 ,3 ]
Tishin, Alexander M. [1 ]
Moriwaki, Tomomasa [4 ]
Nakazawa, Kenta [4 ]
Ichiyanagi, Yuko [4 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119991, Russia
[2] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England
[3] Skolkovo Inst Sci & Technol, Moscow 121205, Russia
[4] Yokohama Natl Univ, Grad Sch Engn Sci, Dept Phys, Yokohama, Kanagawa 2408501, Japan
来源：
IEEE MAGNETICS LETTERS | 2023年 / 14卷
基金：
日本科学技术振兴机构; 俄罗斯基础研究基金会;
关键词：
Zinc; Manganese; Iron; Magnetic hysteresis; Annealing; Magnetic fields; Nanoparticles; Nanomagnetics; internal loss power; magnetic hyperthermia; specific absorption rate;
D O I：
10.1109/LMAG.2022.3233222
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Magnetic and magnetothermal properties of annealed Zn0.2Mn0.8Fe2O4 nanoparticles with diameter value, ranging from 9 to 35 nm, have been investigated and compared with earlier investigated unannealed Zn0.2Mn0.8Fe2O4 magnetic nanoparticles (MNPs). A single-phase spinel structure was observed in both types of MNPs. It has been demonstrated that for the large annealed Zn0.2Mn0.8Fe2O4 nanoparticles (24.7, 31.4, 35.1 nm) the value of specific absorption rate (SAR) is proportional to the amplitude of the magnetic field as similar to H-4. However, for earlier investigated unannealed Zn0.2Mn0.8Fe2O4 MNPs, superquadratic dependence SAR similar to H-5 have been found starting from 13 nm. Significant change of dependence of the 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 Zn0.2Mn0.8Fe2O4 nanoparticles.
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页数：5
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