Ratio of Ionic Conductivity to Tracer Diffusion in Interstitialcy Migration

McCombie, Charles; Lidiard, A. B.

doi:10.1103/physrev.101.1210

Cited by 35 publications

(12 citation statements)

References 4 publications

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“…7 The temperature dependence plot of the diffusion coefficient of the 'chloride ion shows pronounced curvature. For the intrinsic region below 350°C, Compton and Maurer expressed Compton's6 data by the equation D= 1.46 exp(-0.890 ev/kT) cm 2 /sec.…”

Section: Resultsmentioning

confidence: 99%

Diffusion of Ag+, Cl−, and Cd++ in Silver Chloride Single Crystals

Reade

Martin

1960

Journal of Applied Physics

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Bulk and surface oxygen vacancy formation and diffusion in single crystals, ultrathin films, and metal grown oxide structuresThe diffusion rates of silver, chlorine, and cadmium ions in single crystals of silver chloride have been investigated by means of a modification of the surface counting method. The diffusion coefficient of the silver ion from 200° to 400°C was represented by the equation D=9.36 exp( -1.01 ev/kT) cm'/sec. Estimates of chloride ion activation energies gave a value of 1.57 ev between 350° and 400°C, and a value of 0.37 ev below 280°C. The silver and chloride ion diffusion data have been compared with results of workers who used sectioning methods. The diffusion coefficient of the cadmium ion may be expressed by the equation D=32.8 exp(-1.36 ev/kT) cm'/sec+2.35 X 10-5 exp(-O.56/kT) cm' sec.

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Section: Resultsmentioning

confidence: 99%

Diffusion of Ag+, Cl−, and Cd++ in Silver Chloride Single Crystals

Reade

Martin

1960

Journal of Applied Physics

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“…1,2 Since de Boer's 3 original proposal in 1937 that the F center was an electron trapped at a negative-ion vacancy within the crystal, and thus should exhibit paramagnetism, it has been shown through electron spin resonance experiments that the F center is paramagnetic. 4 An unusually broad resonance line (with partially resolved structure in the case of LiF and NaF) has been observed with a g value slightly less than the freeelectron g value. 5-10 Assuming the de Boer model, the slight g shift was explained as arising from a spin-orbit interaction between the electron spin moment and the magnetic field due to its orbital motion, while the unusual breadth was attributed to a hyperfme coupling of the electron with the neighboring nuclei, thus inhomogeneously broadening the resonance line.…”

Section: Introductionmentioning

confidence: 94%

Paramagnetic Resonance ofFCenters in Alkali Halides

1962

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The F-center slow-and fast-passage electron spin resonance has been observed in LiF, LiCl, NaF, NaCl, NaBr, KC1, and KBr. The hyperfme coupling of the F electron to nuclei neighboring the negative-ion vacancy has been measured by electron-nuclear double resonance. Root second moments of the resonance absorption, obtained from slow passage, agree with values calculated from the hyperfme constants. In the case of LiF, the partially resolved structure existing on the slow passage resonance line is shown conclusively to arise from the F center. These experimental results, together with those of previous workers, are compared with the theory of Gourary and Adrian.

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“…Correlation effects have been shown to cause deviations from the Nernst-Einstein relationship [6], to reduce the isotope effect [7] and to result in a deviation from the Arrhenius temperature dependence of the diffusion coefficient [8].…”

Section: Introductionmentioning

confidence: 99%

“…As was first pointed out by Bardeen and Herring, a vacancy mechanism of ionic transport implies that tracer diffusion is non-random and that correlation effects must be taken into account in evaluating diffusion processes. Correlation effects have been shown to cause deviations from the Nernst-Einstein relationship [6], to reduce the isotope effect [7] and to result in a deviation from the Arrhenius temperature dependence of the diffusion coefficient [8].…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Analysis of Cation Diffusion in Potassium Azide

Danemar

Royce

Welch

1974

Physica Status Solidi (b)

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A theoretical analysis has been made of the temperature dependence and anisotropy of the self-diffusion of tracer potassium ions in KN,. A vacancy mechanism is assumed, and the effects of correlation on diffusion are examined. An approximate analytic expression is obtained for the correlation factor, and its validity is determined by comparison with more accurate numerical calculations. The temperature dependence of the elements of the diffusion tensor including correlation is evaluated, making use of theoretical values of the migration energy of cation vacancies, and the role of correlation in determining the crystallographic anisotropy of cation diffusion is discussed. Comparison is made to available experimental data.Es wird die theoretische Analyse der TemperaturabhLngigkeit und Anisotropie der Selbstdiffusion von radioaktiv markierten Kaliumionen in KN, durchgefuhrt. Es wird ein Leerstellenmechanismus angenommen und die Einflusse der Korrelation auf die Diffusion untersucht. Ein geeigneter analytischer Ausdruck fur den Korrelationsfaktor wird erhalten und seine Gultigkeit durch Vergleich mit genaueren numerischen Rechnungen bestimmt. Die Temperaturabhangigkeit der Elemente des Diffusionstensors wird unter EinschluD der Korrelation berechnet, wobei theoretische Werte der Wanderungsenergie der Kationenleerstellen benutzt werden und die Rolle der Korrelation bei der Bestimmung der Kristallanisotropie der Kationendiffusion diskutiert wird. Die Ergebnisse werden mit erhaltlichen experiment ellen Werten verglichen.

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Ratio of Ionic Conductivity to Tracer Diffusion in Interstitialcy Migration

Cited by 35 publications

References 4 publications

Diffusion of Ag+, Cl−, and Cd++ in Silver Chloride Single Crystals

Diffusion of Ag+, Cl−, and Cd++ in Silver Chloride Single Crystals

Paramagnetic Resonance ofFCenters in Alkali Halides

A Theoretical Analysis of Cation Diffusion in Potassium Azide

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