Growth of perovskite-type oxides (RE, Sr)(Al, Ta)O3 as substrates for GaN epitaxial growth (RE = La, Nd)

被引:15
作者
Ito, M [1 ]
Shimamura, K [1 ]
Pawlak, DA [1 ]
Fukuda, T [1 ]
机构
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
关键词
lattice mismatch; substrates; Czochralski method; hydride vapor phase epitaxy; perovskites;
D O I
10.1016/S0022-0248(01)01798-5
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
ew compositions for perovskite-type oxides (RE, Sr)(Al, Ta)O-3 (RE = La, Nd) were investigated from solid-state reactions and grown by Czochralski method as substrates for GaN epitaxial growth. These compounds crystallize in a cubic system. The lattice mismatch with GaN is in the range of 1.24-1.70%. The linear expansion coefficients are around 10 x 10(-6) K-1. Hydride vapor phase epitaxy growth of GaN was performed on (La, Sr)(Al, Ta)O-3 substrates. Free-standing GaN wafers similar to300 mum thick were obtained. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:277 / 282
页数:6
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