Enhanced Magnetic Properties of Barium Hexaferrite
| Autor: | Muhammad Irshad, Syed Nasir Khusro, G. Asghar, Waqar Hussain Shah, Mohammad Sohail Awan, Akif Safeen, Sidra Asri, Muhammad Anis-ur-Rehman, Y. Iqbal, G.H. Tariq |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Doping Analytical chemistry 02 engineering and technology Dielectric Atmospheric temperature range Coercivity 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetic hysteresis 01 natural sciences Electronic Optical and Magnetic Materials Electrical resistivity and conductivity Remanence 0103 physical sciences Materials Chemistry Dielectric loss Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 49:4318-4323 |
| ISSN: | 1543-186X 0361-5235 |
| Popis: | Samples having the composition BaFe12−2xCoxSmxO19 (x = 0.0, 0.2, 0.4, 0.6) are prepared by a WOWS (without water and surfactants) sol–gel technique, and the structural, morphological, and AC and DC electrical and magnetic properties of the samples are investigated. The phase formation of M-type hexaferrite is studied by using indexed x-ray diffraction patterns. Scanning electron microscopy images show that the particle size of the synthesized nanopowder varies from 295 nm to 440 nm. The dielectric constant (e′) exhibits a decreasing trend while the dielectric loss (tan δ) increases with increased doping. DC electrical resistivity (ρDC) is investigated in a temperature range of 373–673 K and indicates an increasing trend with doping. The magnetic hysteresis loops reveal an increase in saturation magnetization (Ms) and remanence (Mr), and a decrease in coercivity (Hc), with the increase in doping content. |
| Databáze: | OpenAIRE |
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