Hwang, Seong-Mee Lim, Jong-Chan Kim, Sang-il Kim, Jeong-Yeon Hwang, Jihyun Lee, Chung-hyun Kwon, Namhee Kim, Inseo Lee, Kimoon Park, Soohyung Bae, Seung-Muk Hwang, Jin-Ha Lee, Kiyoung Kim, Hyun-Sik 2024-05-30T08:00:06Z 2024-05-30T08:00:06Z 2024-05-30 2024-08 0955-2219 https://pubs.kist.re.kr/handle/201004/149943 La-doped BaTiO3 ceramics are essential materials in electronic devices, finding applications in multilayer ceramic capacitors and positive temperature coefficient thermistors. While the electrical properties of La-doped BaTiO3 have been investigated, the impact of its room-temperature resistivity anomaly on dielectric properties remains unclear. We synthesized pristine and La-doped BaTiO3 (0.1 - 0.5 mol%) powders via hydrothermal methods, and then sintered bulk samples. Their resistivities (DC and AC), Curie temperature, room-temperature dielectric constant, and lattice volume with varying La doping concentrations were characterized. Beyond 0.3 mol%, the shift from electronic to ionic charge compensation mechanisms resulted in abrupt changes in resistivities, Curie temperature, and dielectric constant near 0.3 mol%. Given minimal changes in average grain size and relative density near 0.3 mol% La, the dominant factor influencing the dielectric constant peaking near this concentration was the shift in charge compensation mechanism. English Elsevier BV Impact of the change in charge compensation mechanism on the electrical, dielectric, and structural properties of La-doped BaTiO3 ceramics Article 10.1016/j.jeurceramsoc.2023.12.029 1 Journal of the European Ceramic Society, v.44, no.9, pp.5471 - 5479 Journal of the European Ceramic Society 44 9 5471 5479 N scie scopus 001226378500001 2-s2.0-85179820427 Materials Science, Ceramics Materials Science Article BARIUM-TITANATE HYDROTHERMAL SYNTHESIS CRYSTAL-STRUCTURE POWDERS SIZE TEMPERATURE BEHAVIOR PARTICLE DY La -doped BaTiO 3 Multilayer ceramic capacitor Resistivity Dielectric constant Charge compensation