Key Laboratory for Green Chemical Process of Ministry of Education;
Hubei Key Laboratory of Plasma Chemistry and Advanced Materials;
School of Material Science and Engineering;
Wuhan Institute of Technology;
Faculty of Materials and Chemistry;
China University of Geosciences;
State Key Laboratory of Geological Process and Mineral Resources;
China University of Geosciences;
LEAD-FREE; piezoelectric; ceramics; SOLID-STATE; sintering; K/Na; RATIO; electrical; properties;