| 简介 |
PROBLEM TO BE SOLVED : To provide a method for identifying a nonmagnetic garnet (SGGG) single crystal substrate capable of preventing cracks from occurring when epitaxially growing a Bi substitution type rare earth iron garnet single crystal film (RIG) in a liquid phase, and a method for manufacturing a substrate for Bi substitution type rare earth iron garnet single crystal films.SOLUTION : The method for identifying a nonmagnetic garnet (SGGG) single crystal substrate comprises : imaging an X ray topography image after mirror polishing both surfaces of a single crystal substrate cut from a straight body portion of a nonmagnetic garnet single crystal represented by (GdCa)(GaZrMg)O(0
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