High-Speed Synthesis and Electric Properties of Magnesium Doped Lead Titanate Ceramics
By adding methyl alcohol/water solution with certain concentration into sol to hydrolysis directly and sintering the fresh sol directly, lead titanate(PbTiO3) ceramics doped with magnesium are prepared by using magnesium acetate as doper to prohibit the disadvantages contained in conventional sol-gel method, such as low hydrolytic rate, high sintering temperature, long preparation period. The changes of structure, microstructure, synthesis process and electric properties of modified ceramics are studied in detail. The sizes and morphology of high purely and high density magnesium doped lead titanate nanocrystals thus obtained are observed by TEM photographs and the structures and affection of sintering temperature of to lattice constant and sizes of nanocrystals are detected by XRD. Electric properties detection results show that doped lead titanate ceramics exhibite excellent dielectric, ferroelectric and pyroelectric properties compare with pure lead titanate.
Chunli BAI, Sishen XIE, Xing ZHU
L. S. Qiang et al., "High-Speed Synthesis and Electric Properties of Magnesium Doped Lead Titanate Ceramics", Solid State Phenomena, Vols. 121-123, pp. 149-152, 2007