Mössbauer and magnetic study of Mn, Zr and Cd substituted W-type hexaferrites prepared by co-precipitation |
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Authors: | Muhammad Javed Iqbal Rafaqat Ali Khan Shigemi Mizukami Terunobu Miyazaki |
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Affiliation: | aSurface and Solid State Chemistry Laboratory, Department of Chemistry, Quaid-I-Azam University, Islamabad 45320, Pakistan;bWPI-Advanced Institute for Material Research Tohoku University, 2-1-1 Katahira, 980-8577 Sendai, Japan |
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Abstract: | BaCo2−xMnxFe16−2y(Zr–Cd)yO27 (x = 0–0.5 and y = 0–1.0) hexaferrite nanocrystallites of average sizes in the range of 33–42 nm are synthesized by the chemical co-precipitation method. The synthesized materials are characterized using different techniques including X-ray diffraction (XRD), energy dispersive X-ray florescence (ED-XRF), scanning electron microscope (SEM), Mössbauer spectrometer and vibrating-sample magnetometer (VSM). Based on analysis of the data obtained from Mössbauer spectral studies, doping is believed to have occurred preferably in the vicinity of 12k sub-lattice, i.e. fIV (4e, 4fIV), 2b (6g, 4f) and 2d site. Variations in the saturation magnetization (77.1–60.9 emu g−1), remanent magnetization (22.08–31.23 emu g−1) and coercivity (1570.1–674.7 Oe) exhibit tunable behavior with dopant content and therefore can be useful for application in various magnetic devices. |
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Keywords: | A Magnetic materials B Chemical synthesis C Mö ssbauer Spectroscopy C X-ray diffraction |
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