Thermomagnetometric analysis of nickel-zinc ferrites

被引：8
|
作者：
Astafyev, Alexander [1 ]
Lysenko, Elena [1 ]
Surzhikov, Anatoly [1 ]
Nikolaev, Evgeniy [1 ]
Vlasov, Vitaly [1 ]
机构：
[1] Tomsk Polytech Univ, 30 Lenin Ave, Tomsk 634050, Russia
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2020年 / 142卷 / 05期
基金：
俄罗斯科学基金会;
关键词：
Ferrite; Nickel-zinc ferrite; TG; DTG; X-ray diffraction; Thermogravimetric analysis; Thermomagnetometry; Curie temperature; MAGNETIC-PROPERTIES; NI-ZN; TEMPERATURE; MICROSTRUCTURE; NANOPARTICLES; MAGNESIUM; CERAMICS;
D O I：
10.1007/s10973-020-10182-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this paper, magnetic phase transitions of nickel-zinc ferrites (Ni1-xZnxFe2O4) with a zinc content of 0 <= x(Zn) <= 0.7 were studied using the thermomagnetometric method, which is a thermogravimetric analysis with a constant magnetic field applied. The studied ferrites were made from oxide powders using ceramic technology. The Curie point was determined from the derivative thermogravimetric curve in the region of magnetic phase transition. The Curie temperature calibration curve was obtained against the degree of doping of nickel ferrite with zinc to detect the magnetic phases by the Curie temperature. Thermal analysis of multicomponent magnetic mixtures that consist of nickel-zinc ferrites with different zinc contents was performed. The dependence of the change in mass during magnetic phase transition on the mass content of the magnetic phase in the ferrite mixture was revealed.
引用
收藏
页码：1775 / 1781
页数：7
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