THE IMPORTANCE OF THE OXYGEN ENVIRONMENT IN THE LASER DEPOSITION OF YBA2CU3O7-DELTA FILMS AND TUNNEL-JUNCTIONS

被引：2
作者：
MISRA, DS
LOURENCO, AACS
PALMER, SB
机构：
[1] Dept. of Phys, Warwick Univ
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1990年 / 3卷 / 09期
关键词：
D O I：
10.1088/0953-2048/3/9/002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In situ grown superconducting thin films of YBa2Cu3O7- delta (YBCO) and the tunnel junctions of YBa2Cu3O7- delta /PrBa2Cu3O7/YBa2Cu3O7- delta are deposited at Ts approximately=570 degrees C using plasma-assisted laser ablation. The influence of O2 plasma on the superconducting properties of the films is explored in detail. The films show epitaxial growth on SrTiO3(100) substrates and, have Tc approximately=85-87 K and Jc>or=104 A cm-2 at 83 K. rho -T measurements on the tunnel junctions show that the top and bottom layers of YBCO of the heterostructure have similar superconductive properties. X-ray diffraction results, along with preliminary results of R-T and I-V measurements on the junctions, are discussed. © 1990 IOP Publishing Ltd.
引用
收藏
页码：440 / 444
页数：5
相关论文
共 21 条
[1]   PROCESS CONDITIONS FOR DEPOSITION OF GOOD QUALITY THIN-FILMS OF Y1BA2CU3O7-X SUPERCONDUCTOR ON ZRO2, SRTIO3 AND SI ZRO2 SUBSTRATES BY XECL PULSED EXCIMER LASER ABLATION [J].
BENDRE, ST ;
KOINKAR, VN ;
VISPUTE, RD ;
VISWANATHAN, R ;
DHOTE, AM ;
CHAUDHARI, SM ;
KANETKAR, SM ;
OGALE, SB .
SOLID STATE COMMUNICATIONS, 1990, 73 (05) :345-348
[2]   SUPERCONDUCTING YBA2CU3O7-X THIN-FILMS ON ALKALINE-EARTH FLUORIDES [J].
CHAN, SW ;
CHASE, EW ;
WILKENS, BJ ;
HART, DL .
APPLIED PHYSICS LETTERS, 1989, 54 (20) :2032-2034
[3]  
CHOPRA KL, 1969, THIN FILM PHENOMENA, P232
[4]   TUNNELING MEASUREMENTS ON SUPERCONDUCTOR INSULATOR SUPERCONDUCTOR JUNCTIONS USING SINGLE-CRYSTAL YBA2CU3O7-X THIN-FILMS [J].
HIRATA, K ;
YAMAMOTO, K ;
IIJIMA, K ;
TAKADA, J ;
TERASHIMA, T ;
BANDO, Y ;
MAZAKI, H .
APPLIED PHYSICS LETTERS, 1990, 56 (07) :683-685
[5]   PHYSICAL VAPOR-DEPOSITION TECHNIQUES FOR THE GROWTH OF YBA2CU3O7 THIN-FILMS [J].
HUMPHREYS, RG ;
SATCHELL, JS ;
CHEW, NG ;
EDWARDS, JA ;
GOODYEAR, SW ;
BLENKINSOP, SE ;
DOSSER, OD ;
CULLIS, AG .
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1990, 3 (01) :38-52
[6]   NARROW TRACKS IN YBA2CU3O7 THIN-FILMS DEFINED BY LASER ABLATION [J].
HUMPHREYS, RG ;
SATCHELL, JS ;
CHEW, NG ;
EDWARDS, JA .
APPLIED PHYSICS LETTERS, 1989, 54 (01) :75-77
[7]   ROLE OF ATOMIC OXYGEN IN THE LOW-TEMPERATURE GROWTH OF YBA2CU3O7-DELTA THIN-FILMS BY LASER ABLATION DEPOSITION [J].
KOREN, G ;
GUPTA, A ;
BASEMAN, RJ .
APPLIED PHYSICS LETTERS, 1989, 54 (19) :1920-1922
[8]   HIGHLY ORIENTED AS-DEPOSITED SUPERCONDUCTING LASER ABLATED THIN-FILMS OF Y1BA2CU3O7-DELTA ON SRTIO3, ZIRCONIA, AND SI SUBSTRATES [J].
KOREN, G ;
POLTURAK, E ;
FISHER, B ;
COHEN, D ;
KIMEL, G .
APPLIED PHYSICS LETTERS, 1988, 53 (23) :2330-2332
[9]   LASER WAVELENGTH DEPENDENT PROPERTIES OF YBA2CU3O7-DELTA THIN-FILMS DEPOSITED BY LASER ABLATION [J].
KOREN, G ;
GUPTA, A ;
BASEMAN, RJ ;
LUTWYCHE, MI ;
LAIBOWITZ, RB .
APPLIED PHYSICS LETTERS, 1989, 55 (23) :2450-2452
[10]   STRUCTURAL AND SUPERCONDUCTING PROPERTIES OF ORIENTATION-ORDERED Y1BA2CU3O7-X FILMS PREPARED BY MOLECULAR-BEAM EPITAXY [J].
KWO, J ;
HSIEH, TC ;
FLEMING, RM ;
HONG, M ;
LIOU, SH ;
DAVIDSON, BA ;
FELDMAN, LC .
PHYSICAL REVIEW B, 1987, 36 (07) :4039-4042
123