Reduction of the sintering temperature and dielectric loss of the CCTO ceramic by doping tellurite glass

• CaCu3Ti4O12 (CCTO) ceramics can be modified by a multi-component glass system, which shows an influence on the improvement of the sintering process and dielectric properties. In this work, we fabricate the low dielectric loss CCTO ceramics at a low sintering temperature by using the tellurite glass of TBZCBS (TeO2-B2O3-ZnO-CaO-BaO-SrO) as an additive. The study manifests that the sintering temperature of TBZCBSdoped CCTO ceramics could be reduced to 1030 degrees C when the amount of TBZCBS glass is 10 wt%, decreasing 70 degrees C compared to the CCTO ceramic without using an additive. Simultaneously, its loss tangent value at 1 kHz can also decline to similar to 0.0174 from similar to 0.1783. Moreover, we also concluded that the electric properties of TBZCBS-doped CCTO ceramics relate to the amount of TBZCBS glass. The nonlinear J-V properties and breakthrough electric field are improved with an increase of the TBZCBS glass content, confirming the dielectric properties and the electric properties are mainly relevant to the grain boundary properties of CCTO ceramics.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Keramteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Ceramics (hsv//eng)

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Keyword

CaCu3Ti4O12

TeO2-B2O3-ZnO-CaO-BaO-SrO

Dopant

Dielectric properties

Publication and Content Type

ref (subject category)

art (subject category)