4.7 Article

Attractive microwave-absorbing properties of M-BaFe12O19 ferrite

期刊

JOURNAL OF ALLOYS AND COMPOUNDS
卷 557, 期 -, 页码 11-17

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2012.12.148

关键词

Inorganic materials; Composite materials; Sintering; Microstructure; Magnetization; Reflection loss

资金

  1. National Nature Science Foundation of China [21071125]
  2. Science and Technology Key Project of Zhejiang Province [2010C11053]
  3. Key Innovation Team of Zhejiang Province in magnetic materials field [2009R 50006]

向作者/读者索取更多资源

BaFe12O19 ferrite was prepared at relatively lower calcined temperature (900 degrees C) and assisted by reverse microemulsion technology. The as-prepared BaFe12O19 was characterized by X-ray powder diffractometer (XRD), Fourier transform infrared (FTIR) and thermogravimetric analyzer-differential scanning calorimeters (TGA-DSCs). The images of scanning electron microscopy (SEM) and transmission electron microscope (TEM) showed that the average size of sample was in the range of 130-160 nm. The saturation magnetization and the coercivity of sample calcined at 900 degrees C achieved 57.09 emu/g and 4711 Oe, respectively. When the thickness of the absorber coating was 2 mm, the minimum value of reflection loss reached -28.52 dB at about 13.80 GHz, and available bandwidth was approximately 9.3 GHz in the range of 8-18 GHz. The as-prepared barium ferrite at relatively low temperature would be used as an advanced microwave absorption material. (c) 2013 Elsevier B.V. All rights reserved.

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