Effect of Sm2O3 on the microstructure and electrical properties of SnO2-based varistors
Source abstract
Abstract
Abstract The effect of Sm 2 O 3 on the microstructure and non-linear electrical properties of (Co, Nb)-doped SnO 2 -based varistors was investigated. The addition of Sm 2 O 3 improved the non-linear characteristics of (Co, Nb)-doped SnO 2 -based varistors. The threshold electric field ( E B ) of SnO 2 -based varistors increased significantly from 5340 to 12,460 V cm −1 and the mean grain size decreased from 4.7 μm to 1.7 μm as Sm 2 O 3 concentration increased up to 0.20 mol%. There was an optimal value (0.20 mol%) of the Sm 2 O 3 concentration. The sample doped with 0.20 mol% Sm 2 O 3 had the highest non-linear coefficient ( α = 28). The addition of Sm 2 O 3 reduced the relative density of (Co, Nb)-doped SnO 2 -based varistors.
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Research context
OpenAlex topics: ZnO doping and properties · Gas Sensing Nanomaterials and Sensors · Dielectric properties of ceramics
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References (41)
Show source-provided references
1. Microstructure and electric properties of a SnO2 based varistor10.1016/S0272-8842(97)00076-X ↗
2. The influence of the synthesis route on the final properties of SnO2-based varistors10.1016/j.ceramint.2006.12.003 ↗
3. Dependence of La2O3 content on the non-linear electrical behavior of ZnO, CoO and Ta2O5 doped SnO2 varistors10.1016/j.matlet.2006.08.025 ↗
4. Effect of La2O3 doping on the microstructure and electrical properties of a SnO2-based varistor10.1023/A:1011228914690 ↗
5. Electrical and microstructural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems10.1016/j.ceramint.2004.08.009 ↗
6. Varistor property of SnO2·CoO·Ta2O5 ceramic modified by barium and strontium10.1016/j.jallcom.2007.11.062 ↗
7. Investigation of electrical properties of tantalum doped SnO2 varistor system10.1016/j.ceramint.2004.06.004 ↗
8. Influence of Ta2O5 on the electrical properties of ZnO and CoO-doped SnO2 varistors10.1016/j.ceramint.2004.01.007 ↗
9. Non-linear electrical behavior of the Cr2O3, ZnO, CoO and Ta2O5-doped SnO2 varistors10.1016/j.ceramint.2005.03.004 ↗
10. Dependence of the non-linear electrical behavior of SnO2-based varistors on Cr2O3 addition10.1016/j.ceramint.2005.07.025 ↗
11. Electrical barriers formation at the grain boundaries of Co-doped SnO2 varistor ceramics10.1016/j.jeurceramsoc.2007.05.024 ↗
12. The influence of excess precipitate on the non-ohmic properties of SnO2-based varistors10.1023/A:1024084109758 ↗
13. Effect of cobalt (II) and manganese (IV) on sintering of tin (IV) oxide10.1111/j.1151-2916.1996.tb07949.x ↗
14. A new SnO2-based varistor system10.1007/BF00253373 ↗
15. (Gd, Co, Ta)-doped SnO2 varistor ceramics10.1007/s10832-005-0876-4 ↗
16. (Yb, Co, Nb)-doped SnO2 varistor ceramics10.1016/j.mseb.2004.11.013 ↗
17. Influence of La2O3, Pr2O3 and CeO2 on the non-linear properties of SnO2 multicomponent varistors10.1016/S0254-0584(01)00458-8 ↗
18. (Pr, Co, Nb)-doped SnO2 varistor ceramics10.1111/j.1551-2916.2005.00095.x ↗
19. Improvement in the non-linear electrical characteristics of SnO2 ceramic varistors with Dy2O3 additive10.1016/j.mseb.2005.10.005 ↗
20. (Er, Co, Nb)-doped SnO2 varistor ceramics10.1016/j.matchemphys.2005.02.013 ↗
21. Sensitivity of SnO2 non-ohmic behavior to the sintering process and to the addition of La2O310.1016/S0955-2219(00)00329-0 ↗
22. Grain-boundary segregation and precipitates in La2O3 and Pr2O3 doped SnO2·CoO-based varistors10.1016/S0955-2219(02)00445-4 ↗
23. Improvement in the non-linear electrical characteristics of the SnO2·CoO·Ta2O5 varistor material with La2O3 additive10.1016/j.matchemphys.2005.01.031 ↗
24. Defect profile and microstructural development in SnO2-based varistors10.1016/S0955-2219(02)00405-3 ↗
25. Cullity · 1978
26. Average grain size in polycrystalline ceramics10.1111/j.1151-2916.1969.tb11975.x ↗
27. Microstructural evolution during sintering of CoO doped SnO2 ceramics10.1016/S0272-8842(98)00032-7 ↗
28. Low temperature processing of dense samarium-doped CeO2 ceramics: sintering and grain growth behaviors10.1016/j.actamat.2004.01.014 ↗
29. Kingery · 1976
30. Solute effect on grain growth in ceria ceramics10.1016/0955-2219(94)90070-1 ↗
31. Electrical properties of the SnO2-based varistor10.1023/A:1008821808693 ↗
32. Characterization of SnO2-varistors with different additives10.1016/S0955-2219(97)00130-1 ↗
33. Effect of oxiding and reducing atmosphere on the electrical properties of dense SnO2-based varistors10.1016/S0955-2219(00)00177-1 ↗
34. The role of oxygen vacancies on the microstructure development and on the electrical properties of SnO2-based varistors10.1007/s10832-005-0879-1 ↗
35. Synthesis of nanosized (Co, Nb, Sm)-doped SnO2 powders using co-precipitation method10.1016/j.jallcom.2010.01.099 ↗
36. Bueno · J. Appl. Phys. · 1998 · 84 · 370010.1063/1.368587 ↗
37. Admittance and dielectric spectroscopy of polycrystalline semiconductors10.1016/j.jeurceramsoc.2007.02.155 ↗
38. SnO2, ZnO and related polycrystalline compound semiconductors: an overview and review on the voltage-dependent resistance (non-ohmic) feature10.1016/j.jeurceramsoc.2007.06.011 ↗
39. Stucki · Appl. Phys. Lett. · 1990 · 57 · 44610.1063/1.103661 ↗
40. Non-ohmic conduction in tin dioxide based varistor ceramics10.1016/j.matchemphys.2005.11.028 ↗
41. A.B. Glot, A.V. Gaponov, A.P. Sandoval-García, Electrical conduction in SnO2 varistors, Phys. B: Condens. Mater 405(2) (2010) 705–711.