State Key Laboratory of Electronic Thin Films and Integrated Devices, UESTC, Chengdu 610054, China State Key Laboratory of Electronic Thin Films and Integrated Devices, UESTC, Chengdu 610054, China Jiangsu Research Center of Magnetic Materials and Devices Engineering and Technology, Wuxi 214199, China Jiangsu Research Center of Magnetic Materials and Devices Engineering and Technology, Wuxi 214199, China State Key Laboratory of Electronic Thin Films and Integrated Devices, UESTC, Chengdu 610054, China;
manganese-zinc; ferrite; microstructure; initial; permeability; sintering; process;