Open AccessBIREFRINGENCE IMAGES OF SCREW DISLOCATIONS VIEWED END-ON IN GGG AND YAG CRYSTALS
Author(s) -
Ge Chcan-Zhen,
Ling Li,
Mu Wang,
Niu Zhoung-Min,
Ming Nai-Ben,
Feng Ding
Publication year - 1986
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.35.188
Subject(s) - birefringence , materials science , dislocation , optics , gadolinium gallium garnet , yttrium , anisotropy , composite material , physics , epitaxy , layer (electronics) , metallurgy , oxide
Birefringence images of screw dislocations in Gadolinium Gallium Garnet (GGG) and Yttrium Aluminum Garnet YAG) crystals are studied in detail. Birefringence images of screw dislocations viewed end-on were observed for the first tiane. The one-to-one correspondence between birefringence images of screw dislocations viewed end-on and that viewed from the side was demonstrated. The contour of equal intensity of birefringence image of screw dislocation viewed end-on in GGG and YAG crystals was derived by considering the photo-elastieal anisotropy of garnet, and the result yields good agreement Avith experimental observations.