Microhardness of the compounds La2CuO4 and La1.85Sr0.15CuO4 at temperatures from 81 to 292 K

被引：0
作者：
L. S. Fomenko
S. V. Lubenets
V. S. Bobrov
A. N. Izotov
机构：
[1] National Academy of Sciences of Ukraine,Physicotechnical Institute of Low Temperatures
[2] Russian Academy of Sciences,Institute of Solid
来源：
Physics of the Solid State | 1998年 / 40卷
关键词：
Spectroscopy; State Physics; Plastic Deformation; Phase State; Deformation Process;
D O I：
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中图分类号：
学科分类号：
摘要：
The microhardness of La2CuO4 and La1.85Sr0.15CuO4 crystals is measured in the temperature range 81–292 K, and the influence of various factors on it is investigated. The thermal activation parameters of the plastic deformation process in the vicinity of the indenter impression are estimated. The change of the phase state of the compound La1.85Sr0.15CuO4 at the temperature T0=180 K and the appearance of domain (twin) boundaries formed in the ferroelastic tetraortho transition are not seen in the temperature dependence of the microhardness. The results of the study are compared with previously published results for YBa2CuO7−x crystals.
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页码：453 / 457
页数：4
相关论文
共 179 条
[1]  
Cook R. F.(1987)undefined Appl. Phys. Lett. 51 454-undefined
[2]  
Dinger T. R.(1989)undefined Fiz. Tverd. Tela (Leningrad) 31 93-undefined
[3]  
Clarke D. R.(1989)undefined Fiz. Tverd. Tela (Leningrad) 31 263-undefined
[4]  
Bobrov V. S.(1991)undefined Sverkhprovodimost’ (KIAE) 4 2394-undefined
[5]  
Vlasko-Vlasov V. K.(1993)undefined Sverkhprovodimost’ (KIAE) 6 1406-undefined
[6]  
Emel’chenko G. A.(1995)undefined Fiz. Nizk. Temp. 21 324-undefined
[7]  
Indenbom M. V.(1988)undefined Fiz. Tverd. Tela (Leningrad) 30 3503-undefined
[8]  
Lebedev M. A.(1989)undefined Fiz. Tverd. Tela (Leningrad) 31 271-undefined
[9]  
Osip’yan Yu. A.(1989)undefined Fiz. Tverd. Tela (Leningrad) 31 292-undefined
[10]  
Tatarchenko V. A.(1991)undefined Fiz. Tverd. Tela (Leningrad) 33 2198-undefined
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