GROWTH OF LARGE AND UNTWINNED SINGLE-CRYSTAL OF YBCO

被引：51

作者：

LIN, CT ^{[1
]}

ZHOU, W ^{[1
]}

LIANG, WY ^{[1
]}

SCHONHERR, E ^{[1
]}

BENDER, H ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY

来源：

PHYSICA C | 1992年 / 195卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(92)90353-E

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Large (up to 5x4x1.5 mm3) single crystals of YBa2Cu3O7-delta with perfect orthorhombic morphology were successfully grown from favourable flux composition in alumina crucibles. The number of nucleation centres was reduced by using smooth inner wall crucibles and a temperature oscillation method. The crystals could be isolated from the CuO flux by tipping the crucible over while remaining in the furnace at 970-degrees-C. By applying a uniaxial stress at the annealing temperature. both macro- and micro-twin domains in the thick crystals could be removed and a single untwinned domain was obtained. The structures of both twin- and single-domain crystals were characterised by means of high resolution electron microscopy. We also report the magnetic property of the as-grown single crystals.

引用

页码：291 / 300

页数：10

共 17 条

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