Magnetic properties of superparamagnetic β-NaFeO2 nanoparticles

被引：20
|
作者：
Singh, Sarbjit
Tovstolytkin, Alexandr
Lotey, Gurmeet Singh [1 ]
机构：
[1] DAV Univ, Nano Res Lab, Dept Phys, Jalandhar 144012, Punjab, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 458卷
关键词：
NaFeO2; Nanoparticles; Superparamagnetsim; Curie temperature; Blocking temperature; NANOHYPERTHERMIA; BEHAVIOR; SIZE;
D O I：
10.1016/j.jmmm.2018.03.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Superparamagnetic beta-NaFeO2 nanoparticles of particle size 37 nm with orthorhombic crystal structure and space group Pn2(1)a have been prepared by sol-gel method. Temperature dependent magnetic study has been performed. Its systematic analysis has been done to calculate the Curie and blocking temperatures along with its magnetic susceptibility. The Langevin fitting of the magnetic data has been carried out. It has been shown that the synthesized nanoparticles exhibit superparamagnetic behavior. The Neel's relaxation time has been calculated to further support its superparamagnetic nature. The synthesized beta-NaFeO2 nanoparticles behave like ferromagnets below 80 K; they are superparamagnetic above 80 K-340 K and thereafter as paramagnetic. The possible mechanism of superparamagnetism has been discussed. It has been concluded that these nanoparticles can find wide applications in the area of biomedical sciences. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：62 / 65
页数：4
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