| 摘要 |
A method for the production of a single crystal has the single crystal crystallizing from a melt and being subjected to a rotation with an alternating rotation direction. The single crystal is periodically rotated through a sequence of rotation angles, and the rotation direction is changed after each rotation through a rotation angle of the sequence, with a change of the rotation direction defining an inversion point on the circumference of the single crystal. There is at least one recurring pattern of inversion points created, in which the inversion points lie distributed on straight lines that are aligned parallel with the z-axis and are spaced apart uniformly from one another. |
