Non-linear 𝐼â€�?�ð�?��?? characteristics of doped Sn1â€�?�ð�?�¥Ti𝑥O2 (0.0 < ð‘�? < 0.25) system

Bulletin of materials science

V Ravi¹  S K Date¹ 

[1] Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India$$Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, IndiaPhysical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008, India$$

关键词: Varistors;    SnO2;    TiO2;    nonlinear coefficient;    breakdown voltage.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The solid solutions of Sn_{1â€�?�ð�?��?}Ti_ð‘�?O₂ (0.0 < ð‘�? < 0.25) were prepared by the usual high temperature ceramic processing techniques with small amounts of dopants such as Nb, Co, Al. The electrical measurements (log 𝐼â€�?�log ð‘�??) on the ohmically metal electroded sintered pellets showed the non-linear behaviour. The nonlinear coefficient was found to decrease from 12 to 3 with increase in ð‘�?. On the other hand, the breakdown voltage (𝐸_b) showed the increase with the increase in ð‘�?. This complex electrical behaviour is explained on the effects of the three dopants (as varistor former, performance enhancer and highlighter) on the microstructural features of the dense pellet.

【 授权许可】

Unknown