Varley Mechanism for Defect Formation in Alkali Halides

1960 ◽  
Vol 118 (4) ◽  
pp. 934-935 ◽  
Author(s):  
D. L. Dexter
Keyword(s):  
Defect Formation ◽  
Alkali Halides

Sputtering patterns and defect formation in alkali halides

1976 ◽  
Vol 30 (1) ◽  
pp. 55-60 ◽  
Author(s):  
P. D. Townsend ◽  
R. Browning ◽  
D. J. Garlant ◽  
J. C. Kelly ◽  
A. Mahjoobi ◽  
...  
Keyword(s):  
Defect Formation ◽  
Alkali Halides

Model of excitonic mechanism for defect formation in alkali halides

1978 ◽  
Vol 18 (2) ◽  
pp. 922-929 ◽  
Author(s):  
C. H. Leung ◽  
K. S. Song
Keyword(s):  
Defect Formation ◽  
Alkali Halides ◽  
Excitonic Mechanism

Kinetics of defect formation in alkali halides

1978 ◽  
Vol 37 (1-2) ◽  
pp. 45-50 ◽  
Author(s):  
Noriaki Itoh ◽  
Taizan Goto
Keyword(s):  
Defect Formation ◽  
Alkali Halides ◽  
Kinetics Of

scholarly journals Atom Transport Under Varying Pressure * *

1971 ◽  
Vol 26 (1) ◽  
pp. 56-61 ◽  
Author(s):  
D lazarus ◽  
D. N. Yoon ◽  
R. N. Jeffery
Keyword(s):  
Defect Formation ◽  
Activation Volume ◽  
Bulk Diffusion ◽  
Alkali Halides ◽  
Cationic Vacancy ◽  
Intrinsic Volume ◽  
Gaussian Profile ◽  
Diffusion Limited ◽  
Practical Constraint ◽  
Total Activation

Abstract Study of the effect of hydrostatic pressure on the rate of diffusion-limited processes gives in­ formation regarding the intrinsic volume changes associated with formation and motion of defects. While there are basic problems associated with interpretation of the motional volume, such effects may be measured directly in some cases and subtracted to give unambiguous results for the defect formation volume. Experimentally, precise measurement of specimen temperature within a high-pressure environment poses the most severe practical constraint. Results are given for measurements to pressures of 7 kilobars of ionic conductivity in a series of pure and doped alkali halides: NaCl, KCl, NaBr, and KBr, all of which are predominantly cationic vacancy conductors. The activation volumes are found to be pressure dependent in the intrinsic regions. In all cases the Schottky pair vacancy formation volume is found to be larger than the molar volume, the ratio being largest for NaCl and smallest for KBr. Results are also given for the total activation volume for diffusion of Ti44 in beta-Ti, a case of "anomalous" bulk diffusion. The tracer penetration plots do not follow a perfect gaussian profile. However, if the penetration plots are fit to a single gaussian, the activation volume derived is consistent with that expected for a vacancy mechansm in bcc metals

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