MAGNETOOPTIC OBSERVATION OF THE MEISSNER EFFECT IN YBA2CU2O7-X SINGLE-CRYSTALS

被引：21

作者：

DOROSINSKII, LA

INDENBOM, MV

NIKITENKO, VI

POLYANSKII, AA

PROZOROV, RL

VLASKOVLASOV, VK

机构：

[1] Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr.

来源：

PHYSICA C | 1993年 / 206卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)90535-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the first real-time, direct magnetooptic images of the Meissner effect in doped YBa2Cu3O7-x single crystals. Measurements of flux profiles across field-cooled samples reveal increased pinning due to impurities. The strongest effect of the present dopants (Mn, Ca or Si) was found for Si. Furthermore, the spatial resolution was sufficient to observe enhanced trapping of vortices in heavily twinned regions, indicating a strong contribution of twin boundaries to pinning at higher temperatures.

引用

页码：360 / 366

页数：7

共 12 条

[1] CRITICAL STATE IN DISK-SHAPED SUPERCONDUCTORS
DAUMLING, M
LARBALESTIER, DC
[J]. PHYSICAL REVIEW B, 1989, 40 (13): : 9350 - 9353
[2] FRENKEL DJ, 1979, J APPL PHYS, V50, P5402
[3] GYROGY EM, 1989, APPL PHYS LETT, V55, P283
[4] GROWTH AND MICROSTRUCTURE OF SUPERCONDUCTING YBA2CU3OX SINGLE-CRYSTALS
KAISER, DL
HOLTZBERG, F
CHISHOLM, MF
WORTHINGTON, TK
[J]. JOURNAL OF CRYSTAL GROWTH, 1987, 85 (04) : 593 - 598
[5] GROWTH OF YBA2CU3OX SINGLE-CRYSTALS
KAISER, DL
HOLTZBERG, F
SCOTT, BA
MCGUIRE, TR
[J]. APPLIED PHYSICS LETTERS, 1987, 51 (13) : 1040 - 1042
[6] NEW MECHANISMS FOR IRREVERSIBILITY IN HIGH-TC SUPERCONDUCTORS
KRUSINELBAUM, L
MALOZEMOFF, AP
CRONEMEYER, DC
HOLTZBERG, F
CLEM, JR
HAO, ZD
[J]. JOURNAL OF APPLIED PHYSICS, 1990, 67 (09) : 4670 - 4675
[7] TEMPERATURE DEPENDENCES OF THE 1ST CRITICAL-FIELD AND CRITICAL CURRENT IN THE UNTWINNED TMBA2CU3OX SUPERCONDUCTING SINGLE-CRYSTALS
MOSHCHALKOV, VV
ZHUKOV, AA
PETROV, DK
VORONKOVA, VI
YANOVSKII, VK
[J]. PHYSICA C, 1990, 166 (1-2): : 185 - 190
[8] Polyanskii A. A., 1989, Soviet Technical Physics Letters, V15, P872
[9] POLYANSKII AA, 1991, MAY INT C ADV MAT IC, V14, P1300
[10] Vlasko-Vlasov V. K., 1991, Superconductivity: Physics, Chemistry, Technology, V4, P1007

← 1 2 →