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元素V掺杂对ZnO压敏效应的影响机理研究 被引量:1

Effects of V-element Doping on the Current-Voltage Characteristics of ZnO Varistor
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摘要 研究了掺杂不同V2O5对ZnO陶瓷压敏特性的影响。实验表明,ZnO压敏电压随V元素掺杂量增加而随之升高,非线性系数随元素V掺杂量增加而先增大后减小,漏电流先减小后增大。分析认为,V元素掺杂对ZnO压敏材料电性能的影响不仅与电子的能级有关,与其自旋特性也紧密相关。ZnO陶瓷中掺杂的V元素在晶界偏析,其V元素都会产生局域磁矩,会对与其取向不同的自旋电子产生强的散射,这样可增大ZnO压敏陶瓷电阻率,使晶界产生非线性特性。 The effects of amount of V205 doping on the current-voltage characteristics of ZnO varistor are studied. It was found that the breakdown voltage of ZnO gradient increased with the increase of the concentration of V-element, the nonlinearity coefficients will be greatly increased and then decreased, but leakage current densityde- creased and then increased. The current-voltage characteristics of ZnO arenot only decided by the electronic energy level structure, but also associated with electronic spin of V-elements. The V at the grain boundary of ZnO are gave rise to localized magnetic moments and the highly scattering to electronics with different spin orientation, favorable for increasing the resistivity and nonlinear characteristics of ZnO varistor.
出处 《压电与声光》 CSCD 北大核心 2010年第2期304-306,共3页 Piezoelectrics & Acoustooptics
关键词 压敏材料 电性能 过渡族元素 自旋相关输运 varistor electrical properties transition-metal elements spin-dependent transport
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  • 1徐国跃,马立新,谢国治,骆心怡.ZnO/Co_2O_3敏感电阻单元材料V-I非线性及NTC效应[J].功能材料,2000,31(5):516-518. 被引量:6
  • 2肖胜根,甘国友,严继康.ZnO压敏电阻器低压化浅谈[J].中国陶瓷工业,2006,13(4):41-44. 被引量:5
  • 3吴人杰.复合材料[M].天津:天津大学出版社,2000.263. 被引量:12
  • 4Hng Huey Hoon,Halim Lindawaty. Grain growth in sintered ZnO-1mol% V2O5 ceramics [J].Material Letters, 2003(57):1411~1416. 被引量:1
  • 5Hng Huey Hoon,Knowles Kevin M.Characterisation of Zn3 (VO4)2 phase in V2O5-doped ZnO varistors [J]. Journal of the Europian Ceramic Society, 1999 (19):721~726. 被引量:1
  • 6Hng Huey Hoon,Chan Poh Ling. Effects of MnO2 doping in V2O5-doped ZnO varistor ststem [J].Materials Chemistry and Physics, 2002 (75) :61 ~66. 被引量:1
  • 7Jyh-Kuang Tsai,Tai-Bor Wu. Microstructure and nonohmic properties of binary ZnO-V2O5 ceramics sintered at 900℃ [J].Materails Letters, 1996 (26):199~203. 被引量:1
  • 8Hng H H,Chan P L. Microstructure and current-voltage characteristics of ZnO-V2O5-MnO2 varistor system[J].Ceramic international, 2003(12): 3635~3640. 被引量:1
  • 9新野正之 平井敏雄 渡边龙三.倾斜功能材料[J].日本复合材料学会志,1987,13(4):257-257. 被引量:4
  • 10YANG B, CHEN X M. Alumina ceramics toughened by a piezoelectric secondary phase[J]. Journal of the European Ceramic Society, 2000,20 (11) : 1687-1690. 被引量:1

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