1997
DOI: 10.1016/s0921-4526(97)00426-2
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Classical percolation threshold and resistance versus temperature behaviour of RuO2-glass films

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Cited by 37 publications
(39 citation statements)
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“…3,4,5 The macroscopic transport properties are then governed by tunnelling paths percolating the entire sample, giving rise to a strong dependence upon the metallic volume fraction. 6 Here we show that the percolative properties strongly depend upon the tunnelling parameters, which can be modified in a controlled way by applying an external strain ε in piezoresistive measurements. In particular, we have found that the critical exponent t characterising the metal-insulator transition is affected by ε, giving evidence of a tunnelling-distance dependence of t.…”
Section: Introductionmentioning
confidence: 80%
“…3,4,5 The macroscopic transport properties are then governed by tunnelling paths percolating the entire sample, giving rise to a strong dependence upon the metallic volume fraction. 6 Here we show that the percolative properties strongly depend upon the tunnelling parameters, which can be modified in a controlled way by applying an external strain ε in piezoresistive measurements. In particular, we have found that the critical exponent t characterising the metal-insulator transition is affected by ε, giving evidence of a tunnelling-distance dependence of t.…”
Section: Introductionmentioning
confidence: 80%
“…This is illustrated in Fig. 1, where we have collected 99 different values of the critical exponent t and the critical threshold x c measured in various composites including carbon-black-polymer systems, oxide-based thick film resistors ͑TFRs͒, [27][28][29][30][31][32][33][34][35][36][37][38] and other metal-inorganic and -organic insulator composites. 26,[39][40][41][42][43][44][45][46][47][48] It is clear that, despite that many of the t-values reported in Fig.…”
Section: Introductionmentioning
confidence: 99%
“…Acc R = 100(R calc − R meas )/R meas (10) where: Acc R -accuracy of R-th resistor in %, R meas -measured resistance, R calc -resistance calculated from the model.…”
Section: Estimation Of Modeling Errorsmentioning
confidence: 99%
“…In general, the temperature properties of thick-film resistors are well described in a standard temperature range (between −55°C and 125°C). Also their R(T) characteristics, from very low up to room temperature (−190°C T 25°C or even higher) are very important for the analysis of possible conduction mechanisms in such composites [5][6][7][8][9][10][11][12][13]. However, such models are not recommended for designers and users of electronic circuits because of their complexity [14].…”
Section: Introductionmentioning
confidence: 99%