SYNTHESIS OF SUPERCONDUCTING EPITAXIAL-FILMS OF BA1-XKXBIO3 BY LASER-ABLATION

被引：8

作者：

KIM, HT ^{[1
]}

SUMI, A ^{[1
]}

UWE, H ^{[1
]}

FUJITA, J ^{[1
]}

OHSHIMA, K ^{[1
]}

机构：

[1] NEC CORP LTD,FUNDAMENTAL RES LABS,TSUKUBA,IBARAKI 305,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1993年 / 32卷 / 10期

关键词：

SUPERCONDUCTING EPITAXIAL FILMS; BA1-CHI-K-CHI-BIO3; BKB; LASER ABLATION;

D O I：

10.1143/JJAP.32.4529

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting epitaxial films of Ba1-xKxBiO3 have been synthesized by laser ablation using a stoichiometric target (x=0.4). The films were deposited at substrate temperatures of 450-550-degrees-C in argon at the pressure of 1 Torr with successive annealing at 350-degrees-C in oxygen at pressure of 1 atm. The energy density of the laser was 1.5-2.5 J/cm2 per pulse. The deposition temperature and the laser power affect the crystalline property, the superconducting property and the surface morphology. The film deposited at the substrate temperature of 510-degrees-C has the highest onset T(c) of 28 K. The films oriented with respect to [100] are found to be epitaxial, using a four-circle diffractometer. Cracking in the superconducting films is not found. The film on the MgO substrate with small lattice mismatch exhibits higher zero-resistance T(c) than those on the other substrates, SrTiO3 and LaSrGaO4.

引用

页码：4529 / 4534

页数：6

共 15 条

[1]

CHENG JT, 1988, CRC CRIT R SOLID ST, V15, P63

[2] EPITAXIAL-GROWTH STUDY OF (BA1-XRBX)BIO3-DELTA FILMS BY ION-BEAM SPUTTERING [J].

FUJITA, J ;

YOSHITAKE, T ;

SATOH, T ;

IGARASHI, H ;

TAKEUCHI, I ;

MIURA, S ;

TSAI, JS ;

TSUGE, H .

PHYSICA C, 1991, 185 (pt 3) :1979-1980

[3]

HELLMAN ES, 1991, APPL PHYS LETT, V60, P1199

[4] LOW-LEAKAGE THIN-FILM SUPERCONDUCTOR-INSULATOR-NORMAL METAL TUNNEL-JUNCTIONS ON COEVAPORATED BA1-XRBXBIO3 AND RF-SPUTTERED BA1-XKXBIO3 [J].

HOU, CJ ;

FINK, RL ;

HILBERT, C ;

KROGER, H .

APPLIED PHYSICS LETTERS, 1992, 60 (10) :1262-1264

[5]

IYO A, 1992, ADV SUPERCOND, V4, P211

[6]

IYO A, 1993, ADV SUPERCONDUCTIVIT, V5, P195

[7]

LACOE RC, 1992, P INT C APPL SUPERCO

[8] SUB-5 MU-M THIN-FILM CRYSTALLINE SILICON SOLAR-CELL ON ALUMINA CERAMIC SUBSTRATE [J].

ISHII, K ;

NISHIKAWA, H ;

TAKAHASHI, T ;

HAYASHI, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1993, 32 (6A) :L770-L773

[9] INSITU PULSED LASER DEPOSITION OF SUPERCONDUCTING BA1-XKXBIO3 THIN-FILMS [J].

MOON, BM ;

PLATT, CE ;

SCHWEINFURTH, RA ;

VANHARLINGEN, DJ .

APPLIED PHYSICS LETTERS, 1991, 59 (15) :1905-1907

[10]

OGIHARA M, 1992 INT C SOL STAT, P723

← 1 2 →