Abstract
In this research, Ni2+ and Zr4+ co-doped Sr–La hexaferrites Sr0.7La0.3Fe12.0−2x(NiZr)xO19 (0.0 ≤ x ≤ 0.5) were synthesized by the standard ceramic method. The phase identification of the hexaferrites was confirmed by X-ray diffraction analysis. X-ray diffraction analysis showed that all the samples were in single phase M-type hexagonal structure and no impurity phase was observed. Lattice parameters (c and a) increased with increasing NiZr content (x) from 0.0 to 0.5. The morphology of the hexaferrites was analyzed by a field emission scanning electron microscopy (FE-SEM). FE-SEM micrographs showed that the grains exhibited hexagonal shape in a plate-like structure with clear grain boundaries. Magnetization properties of the hexaferrites were carried out at room temperature using a physical property measurement system-vibrating sample magnetometer. The values of saturation magnetization (Ms), remanent magnetization (Mr) and coercivity (Hc) were calculated from magnetic hysteresis (M–H) loops. Ms and Hc decreased with increasing NiZr content (x) from 0.0 to 0.5. Mr and Mr/Ms ratio first increased with increasing NiZr content (x) from 0.0 to 0.1, and then decreased when NiZr content (x) ≥ 0.1.
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Acknowledgements
This work was supported by the Scientific Research Fund of SiChuan Provincial Education Department (Nos. 13ZA0918, 14ZA0267 and 16ZA0330), the Major Project of Yibin City of China (Nos. 2012SF034, 2016GY025 and 2016QD002), Scientific Research Key Project of Yibin University (No. 2015QD13) and the Open Research Fund of Computational Physics Key Laboratory of Sichuan Province, Yibin University (No. JSWL2015KFZ04).
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Yang, Y., Wang, F., Shao, J. et al. Investigation of magnetic and structural properties of Ni–Zr co-doped M-type Sr–La hexaferrites. Appl. Phys. A 124, 129 (2018). https://doi.org/10.1007/s00339-018-1572-y
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DOI: https://doi.org/10.1007/s00339-018-1572-y