Amplitude dependent internal friction of sphalerite type semiconductors
نویسندگان
چکیده
منابع مشابه
Amplitude-dependent Internal Friction and Dislocation Mobility in Crystals
The amplitude-dependent internal friction due to dislocations oscillating in the lattice is described in terms of dislocation mobility. This kind of intemal friction is expressed in elementary forms in the two limiting cases, i.e. at hish and low frequencies, and with the results obtained, the behavior of relaxation peaks due to dislocations are discussed 1 INTRODUCTION The amplitude-dependent ...
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Internal friction in aluminum thin films on silicon substrates has been measured uaween 180 and 360 K as a function of strain amplitude. The amplitude dependence of internal fnction in the aluminum films has been evaluated from the data on the film-substrate composite and further converted into the plastic strain of the order of as a function of the effective stress on dislocation motion. The m...
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Anelasticity, as suggested by Zener / I / in 1948, gives rise to internal friction which is independent of the strain amplitude. The internal friction which increases with an increase of strain amplitude was explained by Koehler /2/ and Granato and Liicke /3/ in terms of vibration string and unpinning of dislocations. Early in 1949, ~d /4, 5/ observed in slightly cold-worked dilute aluminium-co...
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Zuzanka Trojanová 1,*, Pavel Lukáč 1, Ján Džugan 2 ID and Kristýna Halmešová 2 1 Department of Physics of Materials, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2, Czech Republic; [email protected] 2 COMTES FHT, Průmyslová 996, 334 41 Dobřany, Czech Republic; [email protected] (J.D.); [email protected] (K.H.) * Correspondence: ztrojan@...
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In order to get the information on the force-distance curve for the interaction between a dislocation and a solute atom, amplitude-dependent interna1 friction was measured at 1.7 30 K on Al-100 at ppm Zn and Al-50 at ppm Zn single crystals. The temperature dependence of applied strain under a constant decrement is the same for two concentrations with high accuracy. The data were analyzed by the...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1993
ISSN: 0108-7673
DOI: 10.1107/s0108767378089667