LASER DEPOSITION OF BIAXIALLY TEXTURED YTTRIA-STABILIZED ZIRCONIA BUFFER LAYERS ON POLYCRYSTALLINE METALLIC ALLOYS FOR HIGH CRITICAL CURRENT Y-BA-CU-O THIN-FILMS

被引：240

作者：

READE, RP

BERDAHL, P

RUSSO, RE

GARRISON, SM

机构：

[1] LAWRENCE BERKELEY LAB,DIV ENERGY & ENVIRONM,BERKELEY,CA 94720

[2] CONDUCTUS INC,SUNNYVALE,CA 94086

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 18期

关键词：

D O I：

10.1063/1.108277

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Pulsed laser deposition of yttria-stabilized zirconia (YSZ) layers on polycrystalline metallic alloy substrates is used to produce an intermediate layer for YBa2Cu3O7-delta (YBCO) thin-film growth. The desired (001) YSZ texture is obtained at 1.0 mTorr oxygen pressure and 70-degrees-C. Significant improvement in (001) texturing is demonstrated by using an ion beam to assist growth. Argon-ion-assisted growth produces layers with alignment of the in-plane crystal axes in addition to the (001)-normal texture. Highly c-axis-oriented biaxially aligned YBCO thin films can be deposited on these layers, with T(c)(R=0)=92 K and J(c)(77 K, B=0 T)=6 X 10(5) A/cm2 and J(c) (77 K, 0.4 T) = 8 X 10(4) A/cm2. With further improvement of the YSZ texture, the YBCO current-carrying capacity of films on polycrystalline metallic alloys may approach that of films on single-crystal substrates.

引用

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页码：2231 / 2233

页数：3

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