Influence of various donors on nonlinear I–V characteristics of tin dioxide ceramics

Dhage, S. R.; Ravi, V.
December 2003
Applied Physics Letters;12/1/2003, Vol. 83 Issue 22, p4539
Academic Journal
The influence of different donors such as Nb, Ta, Sb, and V on nonlinear current (I)-voltage (V) relations of tin dioxide ceramics is investigated. The room-temperature resistivity (ρ), nonlinear coefficient (α), breakdown electric field (E[sub B]) and barrier height ([uppercase_phi_synonym][sub B]) are calculated as a function of donor content. The present system contains fewer additives as compared to ZnO varistor wherein small quantities of variety of metal oxides are added. Optimum doping of antimony-doped samples shows promising behavior for low-voltage varistor application. © 2003 American Institute of Physics.


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