Conductivity of p-

Eigure 11 illustrates the superior conductivity of P/M silver—nickel or silver—cadmium oxide contacts when compared with contacts made by standard melting techniques and formed from soHd-solution alloys. 

Most physical properties are but little affected by nuclear-spin isomerism though the thermal conductivity of P-H2 is more than 50% greater than that of 0-H2, and this forms a ready means of analysing mixtures. The mp of P-H2 (containing only 0.21% (3-H2) is 0.15 K below that of normal hydrogen (containing 75% 0-H2), and by extrapolation the mp of (unobtainable) pure... 

Compared with the ionic conductivity of p" —alumina tubes, the electronic conductivity is negligible. The electronic resistivity was found to be 109Qcm at 300 °C and 7x lO3 Qcm at 1000 °C [27]. 

Alpha silver iodide, the high-temperature phase of Agl, shows an extraordinarily high Ag+ ionic conductivity. On the other hand, the conductivity at room temperature, that is, the conductivity of P-AgI is considerably lower [12,20], In the a-Agl phase, there are only two Ag+ ions distributed over the octahedral and tetrahedral positions of the cubic lattice, producing many vacancies that are accessible for Ag+ ions to bypass through the structure [20], Then, in order to operate these materials it is necessary to stabilize the high-temperature a phase at low temperatures [12], Subsequently, a considerable amount of studies of ternary and quaternary compounds have been performed with the purpose of stabilizing fast ionic phases at low temperatures [29],... 

The variation of the electrical conductivity of P-A1203 with temperature [431] is shown in Figure 44 along with the same variation for NaAlCl4. It is seen from Figure 44 that the electrical conductivity of the ceramic material suddenly... 

Figure 44 Variation of the electrical conductivities of P"-A1203 (1) and NaAlCl4 (2) with temperature [431],... 

Figure 24.9 Effect of lithium doping on the conductivity of P, DCA. The addition of even small amounts (2%) LiDCA results in a dramatic increase in the conductivity of the material.

In this paper we compare conductivity of p-type silicon substrates with initially formed Si(lll)-7x7 and Si(l 1 l)-[(V3x /3)/30°]-Cr smface phase during submonolayer and monolayer deposition of iron at room temperature. 

The measurements of ion transport numbers made by method of EMF and by sign of thermo-electric force reveal, that in all studied materials at Po2 > 10 Pa and in air the electronic conductivity of p-type (hole conductiviy) predominates, and at P02 < 10-1 Pa the electrical conductivity is predominantly ionic. The transport number of ions f alters depending on oxygen partial pressure, temperature and doping from 0,9 down to 0,1. 

The electric conductivity of p-PODA at room temperature is 10 Scm This corresponds to common insulating polymers in the glassy state. However, above 440 K, ionic conduction is observed. " Electrically conductive PODAs can be obtained by doping with electron donors or electron acceptors. Some varieties of PODA are semiconductors and exhibit photoconductive properties. Therefore, they are used in electrical applications. PODA films exhibit exceptional gas separation properties. ... 

N. Baffler, J. C. Badot and Ph. Colomban, Protonic conductivity of p" and ion-rich p-alumina. II ammonium compounds. Solid State Ionics 13 (1984) 233-6. 

Thermal conductivity of P-SiAlONs prepared by a combination of combustion synthesis and spark plasma sintering. Ihermochim. Acta,... 

The electrical conductivity of P-alumina depends on the size of the M cation. If the ion radius of the M cation becomes larger, its mobility is impeded and hence its transference number is decreased. On the other hand, if the M cation is too... 

High-Temperature Sodium-Sulfur Battery This battery employs the ionic conductivity of P-alumina, that acts as a diaphragm containing liquid sodium which serves as the negative pole of the battery (Figure 7.12). The steel casing, which usually is... 

FIGURE 12.12 Conductivity of P(VDF-CTFE)/Nafion/inorganic membranes with different inorganic additives at 120°C and different RH. (1-30% P(VDF-CTFE)/30%Nafion/40% H30Zr2(P04)3 2-20% P(VDF-CTFE)/20%Nafion/60% AZP 3-30% P(VDF-CTFE)/ 30%Nafion/40% H2(SiTi207)1.5H20 4-30% P(VDF-CTFE)/30%Nafion/40% MS.)... 

A model found to correctly predict the steep increase in conductivity of P(Ac) on doping and dependence of P(Ac) on temperature is that proposed by Kivelson [180, 181]. In its essence, this "intersoliton hopping" model applied primarily to P(Ac) proposes isoenergetic hopping of electrons from a neutral soliton of one chain to a charged soliton at a neighboring chain via tunnelling. It is able to account well for... 

The conductivity of P (MEO-7)/MSCN hybrid film was measured at different temperatures ranging from 0 to 80 °C, and the Arrhenius plot for each system is shown in Fig. 8 [8]. The all of these could be drawn as curved line rather than linear. In other words, the ionic conduction mechanism in each system is considered to obey the Williams-Landel-Ferry(WLF) behavior, in which ionic movement is influenced by the segmental motion of the polymers. 

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