Self-Diffusion in Potassium

Mundy, J. N.; Miller, Theodore E.; Porte, R.

doi:10.1103/physrevb.3.2445

Cited by 59 publications

(23 citation statements)

References 3 publications

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“…This interpretation is consistent with the observation (Mundy 1971) that the activation volume of the high-temperature process is about twice that of the lowtemperature process. The problem with this interpretation is that it is the intermediate temperature mechanism in the case of the threemechanism fit or the high temperature mechanism in the case of the two-mechanism fit that has diffusion parameters typical of vacancy diffusion in terms of the size of D o and the relation of Q to the melting temperature.…”

Section: D Feit Onsupporting

confidence: 90%

“…metals was rather more complicated than that in the close-packed metals. More recently, careful self-diffusion measurements in sodium (Mundy 1971) and potassium (Mundy, Miller and Porte 1971) have demonstrated non-Arrhenius behaviour, indicating that the division of b.c.c. metals into normal and anomalous diffusers is rather arbitrary, as was suggested by Peterson (1968).…”

Section: Introductionmentioning

confidence: 97%

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Self-diffusion mechanisms in sodium

Feit

1972

Philosophical Magazine

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Section: D Feit Onsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 97%

Self-diffusion mechanisms in sodium

Feit

1972

Philosophical Magazine

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“…P) This is the lowest temperature at which self-diffusion data exist [51], the selection of this temperature has been made for the same reasons as mentioned in h). 9) [47]; the correction from Bs to B has been made using the specific heat data of [48]. [57]; the entropy is obtained from Do = 1.71 cm2/s by using vD = 6.8 x 10l2 s-l. Potassium.…”

mentioning

confidence: 99%

Comments on the Pressure Variation of the Gibbs Energy for Bound and Unbound Defects

Varotsos

Alexopoulos

Nomicos

1982

Physica Status Solidi (b)

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The pressure derivative v of the Gibbs energy g for "unbound" and "bound" defects (i.e. vacancies or interstitials attracted by aliovalent impurities) is studied. It is shown that for the formation and migration of defects the ratio v/g depends solely on well-known macroscopic properties; applications are presented for self-diffusion in f.c.c. and b.c.c. metals and for ionic conductivity of silver halides. In the case of ionic solids containing "bound" defects, a gradual variation of pressure results in the appearance of a transient polarization or depolarization current that maximizes a t a certain pressure Per. The way of analysing this piezo-stimulated current (PSC) spectrum is discussed. The fact that the value of PCr does not have to coincide with the pressure a t which fracture occurs provides a useful tool for applying PSC to geophysics.Die Druckableitung v der Gibbsschen Energie g fur ,,ungebundene" und ,,gebundene" Defekte (d. h. Vakanzen oder Zwischengitterstorstellen, die durch aliovalente Storstellen angezogen werden) wird untersucht. Es wird gezeigt, daB fur die Bildung und Wanderung der Defekte das Verhaltnis v/g allein von gut bekannten makroskopischen Eigenschaften abhiingt, Anwendungen werden fur die Selbstdiffusion in k.f.z.-und k.r.2.-Metallen und fur die Ionenleitung in Silberhalogeniden angegeben. Fiir den Fall von Ionenfestkorpern, die ,,gebundene" Defekte enthalten, fuhrt eine graduelle h d e r u n g des Druckes zum Auftreten eines nichtstationiiren Polarisations-oder Depolarisationsstromes, der ein Maximum bei einem kritischen Druck P,, annimmt. Die Mdglichkeit einer Analyse dieses piezostimulierten Strom(PSC)-Spektrums wird diskutiert. Die Tatsache, dall der Wert von P,, nicht mit dem Druck ubereinstimmen muB, bei dem der Bruch auftritt. liefert eine nutzliche Methode fur die Anwendung des PSC in der Geophysik.

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“…They may originate from fundamental aspects involving the atomic migration mechanism up to effects associated with micro-structural characteristics. The defect diffusion deviating from the Arrhenius relation has been reported for normal metals such as potassium 10 and silver, 11 as well as the anomalous metals such as b-titanium. 12 Frequently, these deviations have been attributed to simultaneous effects of two or more different defects 2011) which contributed to the diffusion process.…”

mentioning

confidence: 99%

Mechanism of point-defect diffusion in a two-dimensional colloidal crystal

DaSilva

Cândido

Hai

et al. 2011

Applied Physics Letters

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Influence of crystal orientation and ion bombardment on the nitrogen diffusivity in single-crystalline austenitic stainless steel J. Appl. Phys. 110, 074907 (2011) Vacancy properties in germanium probed by cobalt diffusion J. Appl. Phys. 110, 033526 (2011) Measurement of photostimulated self-diffusion in silicon J. Appl. Phys. 109, 103708 (2011) Physical modeling and implementation scheme of native defect diffusion and interdiffusion in SiGe heterostructures for atomistic process simulation J. Appl. Phys. 109, 103502 (2011) Chemistry of Ruddlesden-Popper planar faults at a ferroelectric-ferromagnet perovskite interface

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Self-Diffusion in Potassium

Cited by 59 publications

References 3 publications

Self-diffusion mechanisms in sodium

Self-diffusion mechanisms in sodium

Comments on the Pressure Variation of the Gibbs Energy for Bound and Unbound Defects

Mechanism of point-defect diffusion in a two-dimensional colloidal crystal

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