TY - JOUR
T1 - The dielectric properties for (Nb,In,B) co-doped rutile TiO2 ceramics
AU - Zhu, Xuhui
AU - Yang, Longhai
AU - Li, Jinglei
AU - Jin, Li
AU - Wang, Linghang
AU - Wei, Xiaoyong
AU - Xu, Zhuo
AU - Li, Fei
N1 - Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.
PY - 2017/6/1
Y1 - 2017/6/1
N2 - Recently, colossal permittivities (~105) and low loss factors (<0.1) were reported in (Nb+In) co-doped rutile TiO2 ceramics, which have attracted considerable attention. In this work, (Nb,In,B) co-doped rutile TiO2 ceramics were investigated for achieving temperature- and frequency- stable dielectric properties in TiO2 based colossal dielectric ceramics. The (Nb,In,B) co-doped rutile TiO2 ceramics were prepared by conventional solid-state reaction method. The microstructures, dielectric properties and complex impedance of 1 mol.% (Nb+In) co-doped rutile TiO2 (TINO) and xwt% B2O3 (x=0.5, 1, 2 and 4) doped TINO were systematically investigated and compared. It was found that by doping B2O3 the sintering temperature of TINO ceramics can be reduced by 100 °C. Meanwhile, the dielectric loss of TINO ceramics was decreased by doping B2O3. In the 2wt% B2O3 doped TINO ceramics, the dielectric permittivity kept a high value of >2.0×105 and the dielectric loss was lower than 0.1 in a frequency range of 102−105 Hz and a temperature range of 25–200 °C.
AB - Recently, colossal permittivities (~105) and low loss factors (<0.1) were reported in (Nb+In) co-doped rutile TiO2 ceramics, which have attracted considerable attention. In this work, (Nb,In,B) co-doped rutile TiO2 ceramics were investigated for achieving temperature- and frequency- stable dielectric properties in TiO2 based colossal dielectric ceramics. The (Nb,In,B) co-doped rutile TiO2 ceramics were prepared by conventional solid-state reaction method. The microstructures, dielectric properties and complex impedance of 1 mol.% (Nb+In) co-doped rutile TiO2 (TINO) and xwt% B2O3 (x=0.5, 1, 2 and 4) doped TINO were systematically investigated and compared. It was found that by doping B2O3 the sintering temperature of TINO ceramics can be reduced by 100 °C. Meanwhile, the dielectric loss of TINO ceramics was decreased by doping B2O3. In the 2wt% B2O3 doped TINO ceramics, the dielectric permittivity kept a high value of >2.0×105 and the dielectric loss was lower than 0.1 in a frequency range of 102−105 Hz and a temperature range of 25–200 °C.
KW - Colossal dielectric permittivity
KW - Low dielectric loss
KW - Rutile TiO
UR - https://www.scopus.com/pages/publications/85012872491
U2 - 10.1016/j.ceramint.2017.02.051
DO - 10.1016/j.ceramint.2017.02.051
M3 - 文章
AN - SCOPUS:85012872491
SN - 0272-8842
VL - 43
SP - 6403
EP - 6409
JO - Ceramics International
JF - Ceramics International
IS - 8
ER -