Zobrazeno 1 - 10
of 65
pro vyhledávání: '"J. Brádler"'
Synchrotron radiation topographic study of slip transfer across grain boundaries in Fe–Si bicrystals
Publikováno v:
Journal of Physics D: Applied Physics. 39:4440-4449
The transfer of the common slip system across grain boundaries was examined. Bicrystals of alloys Fe–Si with Si content 4 and 5.5 at% were used for both tension and compression straining. The progress of the deformation was followed by synchrotron
Publikováno v:
Materials Science Forum. :911-916
Grain boundary motion was studied in situ at elevated temperatures by x-ray topography using synchrotron radiation. In addition to the position of grain boundary, other crystal defects that may interact with the moving boundary were observed simultan
Publikováno v:
Journal of Physics D: Applied Physics. 36:A98-A101
The application of in situ synchrotron radiation (SR) transmission topography to the study of grain boundary migration in bicrystals of an Fe–6 at.%Si alloy is described. The details on experimental arrangement of the high-temperature in situ obser
Publikováno v:
Surface and Interface Analysis. 29:260-264
Lithium niobate (LiNbO 3 ) is a widely used ferroelectric material with high electro-optic, non-linear optic, birefringent and photorefractive activities. Modification of the surface of LiNbO 3 single crystals is essential for its application in opto
Publikováno v:
Journal of Physics D: Applied Physics. 32:A109-A113
SR reflection topography was applied to study the interaction of slip dislocations with the grain boundaries in Fe-4at%Si bicrystals deformed by compression. Three experimental settings with either a white or monochromatic beam were used and the corr
Publikováno v:
Materials Science Forum. :373-376
Deformation experiments were performed on three different Fe-4at%Si bicrystals. Synchrotron radiation topography in situ and post mortem was used to investigate the influence of grain boundaries (GB) on slip transmission and to study the interaction
Comparison of Tension and Compression Deformation of Fe-Si Bicrystals – X-Ray Topography Observation
Publikováno v:
Materials Science Forum. :377-380
Compression deformation experiments were performed on three types of Fe-4at%Si bicrystals with different mutual orientation of Burgers vectors and slip planes in the two grains corresponding to the easy, more difficult and difficult slip transfer. Sy
Autor:
Jarmila Cervena, V Zelezny, J. Zemek, M. Polcarová, J. Brádler, Vratislav Perina, J. Vacik, Hana Turcicova
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 141:494-497
Radio-frequency (27.12 MHz) glow discharge in H 2 and O, have been used for surface modification of LiNbO 3 wafers. The properties of plasma modified surface layers were dependent on the gas pressure and radio frequency (RF) input power. At pressures
Preparation and investigation of laser ablated PZT, PLZT and PbMg1/3Nb2/3O3(PMN) ferroelectric films
Autor:
V. A. Trepakov, L. A. Suslov, S. V. Gaponov, V. Trtík, J. Brádler, Miroslav Jelinek, T. A. Shaplygina, E. B. Kluenkov, Yu. N. Drozdov, L. Soukup
Publikováno v:
Ferroelectrics. 152:163-168
Epitaxial thin films of Pb(ZrxTi1-x)O3, Pb1-xLax(ZryTiz)1–(x/4)O3, and PbMg1/3Nb2/3O3 were created by pulsed laser deposition on YBa2Cu3O7-x coated (100)SrTiO3 and (110)SrTiO3 substrates. Film properties were characterized by XRD, RBS and SEM. The
Publikováno v:
Journal of Physics D: Applied Physics. 26:A131-A136
The dependence of the elastic displacement, caused by stress relaxation at the exit of the dislocation on the free surface, on the angle alpha between the dislocation line and the surface normal is calculated. Several cases are treated: different ori