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VOLUME 49 (1989) | ISSUE 3 | PAGE 156
Kinetics of the changes in the twin structure in YBa2 Cu3 O7-x single crystals
The temperature dependence of the saturation time of YBa2 Cu3 07 _ x single crystals in the field of a concentrated load has been studied. The activation energy for the motion of twinning boundaries has been determined (Q~ 0.59 + 0.05 eV). This motion is limited by a reorientation of CuO chains due to a migration of oxygen.