1972
DOI: 10.1002/crat.19720070810
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Physikalische Eigenschaften von nach einer modifizierten Kyropoulos‐Methode gezüchteten NaCl‐ und KCl‐Kristallen

Abstract: Instytut Niskich Temperatur i Badan Strukturalnych PAN, Wroclaw undIiistitut fur FcstkBrperphysik der Tschechoslomak. Akademie dcr U'isrrenschaften. Prw Physikalische Eigenschaften yon nach einer modifizierten Kyropoulos-Methode geziichteten NaClund KC1-KristallenEs werden die physikalischen Eigenschaften von NaCl-und KC1-Einkristallen, welche aus vorher mit Phosgen behandelten Ausgangsmaterialien geziichtet wurden, beschrieben. Die Absorptionsmessungen im UV-und IR-Gebiet sowie auch die Mikroharte und CRSS, V… Show more

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“…It is assumed that the impurity concentration determines z, , even in our purest crystals, whereas the work hardening beyond zo depends only on dislocation interactions. Etch pit observations on different alkali halide crystals (LiF [18], NaC1 [19], KC1 [20]) yield a z -1; relation between flow stress z and the screw dislocation density in the The secondary dislocations activated in the latent system have to overcome the primary dislocation forest. This requires a stress z1= A v' ef (2) (.4 = gpb, g forest interaction parameter, ef forest dislocation density).…”
Section: Forest Dislocatiork Interactionmentioning
confidence: 99%
“…It is assumed that the impurity concentration determines z, , even in our purest crystals, whereas the work hardening beyond zo depends only on dislocation interactions. Etch pit observations on different alkali halide crystals (LiF [18], NaC1 [19], KC1 [20]) yield a z -1; relation between flow stress z and the screw dislocation density in the The secondary dislocations activated in the latent system have to overcome the primary dislocation forest. This requires a stress z1= A v' ef (2) (.4 = gpb, g forest interaction parameter, ef forest dislocation density).…”
Section: Forest Dislocatiork Interactionmentioning
confidence: 99%