CONGRUENT COMPOSITION FOR GROWTH OF LANTHANUM ALUMINATE

被引：21

作者：

BERKSTRESSER, GW

VALENTINO, AJ

BRANDLE, CD

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

JOURNAL OF CRYSTAL GROWTH | 1993年 / 128卷 / 1-4期

关键词：

D O I：

10.1016/S0022-0248(07)80024-8

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Single crystals of lanthanum aluminate have application as a substrate for deposition of thin films of the high temperature superconductors. Initial trials at Czochralski growth of this material revealed that only a small fraction of a stoichiometric melt may be crystallized before the onset of inclusions or voids at the growth interface. The composition of lanthanum aluminate Czochralski grown crystals was analyzed using X-ray fluorescence with a special procedure for sample preparation. The crystal composition was found to be non-stoichiometric, with 0.987 gmoles of La per gmole of Al. Crystal growth from melts covering this composition range have confirmed that the greatest yield of good material comes with the above composition.

引用

页码：684 / 688

页数：5