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Effect of Substitution of Mn, Cu, and Zr on the Structural, Magnetic, and Ku-Band Microwave-Absorption Properties of Strontium Hexaferrite Nanoparticles
被引:21
作者:
Rostami, Mohammad
[1
]
Moradi, Mahmood
[1
,2
]
Alam, Reza Shams
[1
]
Mardani, Reza
[3
]
机构:
[1] Shiraz Univ, Coll Sci, Dept Phys, Shiraz 7194684795, Iran
[2] Shiraz Univ, Inst Nanotechnol, Shiraz 71454, Iran
[3] Air Naut Res Ctr, Shiraz 7194684043, Iran
关键词:
Magnetic materials;
strontium hexaferrite;
magnetic properties;
reflection loss;
microwave absorbers;
PARTICLES;
FERRITE;
TEMPERATURE;
ZN;
CO;
D O I:
10.1007/s11664-016-4635-x
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:
The ferrites with the compositions of SrMnxCuxZr2xFe(12-4x)O19 (x = 0.0, 0.2, 0.3, 0.4, and 0.5) are synthesized by the coprecipitation method. The formation of M-type hexaferrite is confirmed by x-ray diffraction (XRD) and Fourier transform infrared (FTIR) analyses. The morphology of the samples is shown by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) microscopy. Vibrating sample magnetometer (VSM) analysis has been used for the investigation of the magnetic properties, and the reason for the changes in the magnetic properties as a result of doping, are expressed. The values of coercivity decrease by increasing the amount of substitution, which could be related to the modification of anisotropy form the c-axis toward the c-plane. Finally, we have used vector network analysis to investigate the microwave absorption properties. We find that the samples with the composition of SrMn0.4Cu0.4Zr0.8Fe10.4O19 have the largest reflection loss and the widest bandwidth among these samples.
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页码:4154 / 4161
页数:8
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