On the physical nature of a photomechanical effect

被引：9

作者：

Gerasimov, AB ^{[1
]}

Chiradze, GD ^{[1
]}

Kutivadze, NG ^{[1
]}

机构：

[1] Tsereteli State Univ Kutaisi, GE-384000 Kutaisi, Georgia

来源：

SEMICONDUCTORS | 2001年 / 35卷 / 01期

关键词：

Anisotropy; Magnetic Material; Chemical Bond; Electromagnetism; Physical Nature;

D O I：

10.1134/1.1340292

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A photomechanical effect was studied in single-crystal Si by a unified method. The dependences of the photomechanical effect on the spectrum and intensity of light, the residual photomechanical effect (the persistence of crystal softening for some time after the termination of indention), the effect of illumination on microhardness anisotropy, and the temperature dependence of the photomechanical effect were studied. Based on the experimental results and on the analysis of relevant published data, the correlation between the photomechanical effect and the corresponding density of photogenerated nonequilibrium carriers (so-called antibonding quasiparticles) is determined. This correlation suggests a mechanism according to which, in covalent crystals, microhardness decreases mostly owing to chemical bond weakening and isotropization caused by the photogenerated antibonding quasiparticles. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：72 / 76

页数：5

共 19 条

[1]

BEILIN VM, 1964, SOV PHYS-SOL STATE, V5, P1727

[2]

CHIRADZE GD, 1992, THESIS TBILISI

[3]

DOMORYARD IA, 1970, RAD PHYSICS NONMETAL, P131

[4]

DROZDOV VA, 1967, DOKL AKAD NAUK SSSR+, V177, P68

[5]

Gerasimov A. B., 1980, Soviet Technical Physics Letters, V6, P25

[6]

Gerasimov A. B., 1990, Materials Science Forum, V65-66, P47

[7] Influence of indentation-forming conditions on the estimation of the photomechanical effect [J].

Gerasimov, AB ;

Chiradze, GD ;

Kutivadze, NG ;

Bibilashvili, AP ;

Bokhochadze, ZG .

PHYSICS OF THE SOLID STATE, 1998, 40 (03) :462-463

[8] On the mechanism of residual photomechanical effect [J].

Gerasimov, AB ;

Chiradze, GD ;

Kutivadze, NG ;

Bibilashvili, AP ;

Bokhochadze, ZG .

PHYSICS OF THE SOLID STATE, 2000, 42 (04) :701-702

[9]

GERASIMOV AB, 1997, B GEORG ACAD SCI, V156, P391

[10]

GERASIMOV AB, 1991, SOOBSHCH AKAD NAUK G, V142, P53

← 1 2 →