Anwendungsmöglichkeiten der Röntgentopographie zur Bestimmung der Oberflächengüte und der Realstruktur von Granateinkristallen

Single crystals of garnets of the rare earth are interesting in the development of bubble memories. Therefore it is necessary to controll the surface quality of the substrates and epitaxial layers during the different steps of preparation. X-ray topographic methods for testing the surfaces will be compared with the etching technique. Loop-configurations at inclusions are described and the mechanism for their formation will be discussed.