Tunable magneto-dielectric properties of magnetic fluid at radio-microwave frequencies

被引：3
|
作者：
Jadav, Mudra [1 ]
Bhatnagar, S. P. [1 ]
机构：
[1] Maharaja Krishnakumarsinhji Bhavnagar Univ, Dept Phys, Bhavnagar 364001, Gujarat, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 498卷 / 498期
关键词：
Complex permeability; Magnetic fluid; Soft ferrite; Microwave device; PARTICLE CONCENTRATION; POLARIZING FIELD; FERROFLUIDS; CONSTANT; SUSCEPTIBILITY; PERMEABILITY; DEPENDENCE; FERRITE;
D O I：
10.1016/j.jmmm.2019.166127
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Frequency dependent complex magnetic permeability is determined for a laboratory synthesized magnetic fluid having magnetite nanoparticles in the frequency range 0.3 MHz to 3 GHz. The effect of particle concentration, static magnetic field strength and field orientation over dielectric properties of magnetic fluid is studied. The discussion in this paper indicates that loss tangent (tan delta) can be controlled using these parameters. These fluids are suitable for the application in microwave absorber or tunable attenuators.
引用
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页数：6
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