公开(公告)号：US3565577A

公开(公告)日：1971-02-23

申请号：US3565577D

申请日：1968-03-29

Applicant: BELL TELEPHONE LABOR INC

Inventor： PULUKA JOHN F ,  SHIEVER JOHN W ,  NASSAU KURT

IPC: C30B11/00 ,  C01G33/00

CPC classification number: C30B11/00 ,  C30B29/30

Abstract: SINGLE CRYSTALS OF KNB3O8 HAVE OBTAINED FROM A MELT CONTAINING AN EXCESS OF K2O OVER THE STOICHIOMETRIC AMOUNT. SUCH CRYSTALS EXHIBITS EXCELLENT CLEAVAGE, FLEXIBILITY, AND DIELECTRIC PROPERTIES WHICH ENABLE THEIR USE IN HIGH FREQUENCY, HIGH VOLTAGE, HIGH CAPACITANCE APPLICATIONS. SUCH CRYSTALS ARE ALSO TRANSPARENT TO ELECTROMAGNETIC RAIDATION WITHIN THE VISIBLE AND PORTIONS OF THE ULTRAVIOLET AND INFRARED SPECTRUMS, AND EXHIBIT A HIGH REFRACTIVE INDEX ENABLING THEIR USE AS LIGHT GUIDES.