Microstructure and electromagnetic of tantalum substituted W-type hexagonal barium ferrite based on doping concentration. - Dong, Shijun; Li, Runqiu; Wu, Junpeng; Zhong, Wenxia; Zhao, Ye; Ji, Xinran; Zheng, Hui; Zheng, Peng; He, Hong; Zheng, Liang (Journal of Materials Science: Materials in Electronics, 2023)