Power-law currents in some ZnO-Sn composite materials
作者： R D Gould , M S Rahman
DOI: 10.1088/0022-3727/14/1/011
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摘要: The dependence of current density on applied voltage has been studied in the composite system ZnO-Sn, where proportion Sn was 5% or 10% by weight. All samples showed a power-law voltage, with exponent being either equal to 2 range 2.6-2.9. conductivity ascribed traps 1*1016-2*1017 cm-3 which are situated below conduction band edge ZnO. In some cases were distributed exponentially according relation N(E)=N0exp(-E/kTt), temperature parameter Tt typically about 500-600K; other at single level 0.255-0.366 eV band.
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sci-hub.se 参考文章(16)
Makoto Natori, Hideo Kawarada, Hiroaki Yanagida, Estimation of Electrical Conductivity of Composite Materials. II. Numerical Method for Two-Dimensional Tetragonal Texture Japanese Journal of Applied Physics. ,vol. 13, pp. 1772- 1774 ,(1974) , 10.1143/JJAP.14.172A
J. Wong, P. Rao, E. F. Koch, Nature of an intergranular thin−film phase in a highly non−Ohmic metal oxide varistor Journal of Applied Physics. ,vol. 46, pp. 1827- 1830 ,(1975) , 10.1063/1.321749
Lionel M. Levinson, H. R. Philipp, The physics of metal oxide varistors Journal of Applied Physics. ,vol. 46, pp. 1332- 1341 ,(1975) , 10.1063/1.321701
H. P. D. Lanyon, Electrical and Optical Properties of Vitreous Selenium Physical Review. ,vol. 130, pp. 134- 143 ,(1963) , 10.1103/PHYSREV.130.134
J. J. Lee, J. K. O’Brien, M. S. Cooper, Second‐breakdown characteristics of metal‐oxide varistors Journal of Applied Physics. ,vol. 48, pp. 1252- 1257 ,(1977) , 10.1063/1.323767
Michio Matsuoka, Nonohmic Properties of Zinc Oxide Ceramics Japanese Journal of Applied Physics. ,vol. 10, pp. 736- 746 ,(1971) , 10.1143/JJAP.10.736
Sol E. Harrison, Conductivity and Hall Effect of ZnO at Low Temperatures Physical Review. ,vol. 93, pp. 52- 62 ,(1954) , 10.1103/PHYSREV.93.52
D.F. Crisler, J.J. Cupal, A.R. Moore, Dielectric, piezoelectric, and electromechanical coupling constants of zinc oxide crystals Proceedings of the IEEE. ,vol. 56, pp. 225- 226 ,(1968) , 10.1109/PROC.1968.6246
M A Lampert, Volume-controlled current injection in insulators Reports on Progress in Physics. ,vol. 27, pp. 329- 367 ,(1964) , 10.1088/0034-4885/27/1/307
J. WONG, Nature of Intergranular Phase in Nonohmic ZnO Ceramics Containing 0.5 Mol% Bi2O3 Journal of the American Ceramic Society. ,vol. 57, pp. 357- 359 ,(1974) , 10.1111/J.1151-2916.1974.TB10922.X