Premium
Electrical Properties of Sr 0.7 Ba 0.3 TiO 3 Ceramics Doped with Nb 2 O 5 , 3Li 2 O · 2SiO 2 , and Bi 2 O 3
Author(s) -
Zhou Liqin,
Jiang Zhihua,
Zhang Shuren
Publication year - 1991
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1991.tb06865.x
Subject(s) - sintering , materials science , dopant , ceramic , doping , dielectric , analytical chemistry (journal) , electrical resistivity and conductivity , mineralogy , dielectric loss , metallurgy , chemistry , optoelectronics , electrical engineering , chromatography , engineering
The electrical properties of Sr 0.5 Ba 0.3 TiO 3 in the presence of Nb 2 O 5 as a donor, 3Li 2 O · 2SiO 2 as a sintering agent, and Bi 2 O 3 as a dopant have been studied. When the compositions of the ceramics were 1 mol Sr 0.7 Ba 0.3 TiO 3 + 0.5 mol% Nb 2 O 5 + 2 mol% 3Li 2 O · 2SiO 2 + 0.2 mol% Bi 2 O 3 , the ceramics were sintered at 1100°C and exhibited the following characteristics: apparent dielectric constant ɛ, 25000; loss factor tan δ, 2%; insulating resistivity ρ j , 10 10 Ω· cm; variation of dielectric constant with temperature Δɛ/ɛ (−25° to +85°C), +10%, −14%. ɛ and tan δ show only small changes with frequency. The study shows this ceramic can be used in multilayer technology.