Open AccessStudy on the growth, modification and thermal properties of γ-LiAlO2 single crystals
Author(s) -
Jun Zou,
Lianhan Zhang,
Shengming Zhou,
Jun Xu,
Ping Han,
Rong Zhang
Publication year - 2005
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.54.4269
Subject(s) - full width at half maximum , volatilisation , thermal expansion , materials science , crystal (programming language) , melting point , thermal , single crystal , melting temperature , orientation (vector space) , analytical chemistry (journal) , composite material , crystallography , thermodynamics , chemistry , optoelectronics , physics , mathematics , chromatography , geometry , computer science , organic chemistry , programming language
Transparent and crack-free γ-LiAlO2 single crystal was grown by quic k Czochra lski technique. However, high melting point and easy volatilization degraded the quality of the crystal. The fall with at half maximum(FWHM) value dropped from 1169arcsec to 442arcsec when the crystal was modified by vapor transport equ ilibrium(VTE) technique. But when the temperature of VTE was 1300℃, the FWHM va lue increased to 552arcsec. The 100-orientation thermal expansion coeffici ent of the as-grown crystal was 176798×10-6/K, while that alon g the 0 01-orientation was 107664×10-6/K. After three VTE treatments , the cor responding thermal expansion coefficients decreased to 166539×10-6/K and 101784×10-6/K, respectively.