scholarly journals Thermodynamics of Meissner effect and flux pinning behavior in the bulk of single-crystal La2−xSrxCuO4 ( x=0.09 )

2017 ◽  
Vol 96 (10) ◽  
Author(s):  
I. Dhiman ◽  
R. Ziesche ◽  
V. K. Anand ◽  
L. Riik ◽  
Gian Song ◽  
...  
Keyword(s):  
Single Crystal ◽  
Flux Pinning ◽  
Meissner Effect

Field Dependence of Meissner Effect in a Single Crystal of YBa2Cu3Ox in the Ultra-Low Magnetic Field Regime

1987 ◽  
Vol 99 ◽  
Author(s):  
L. Krusin-Elbaum ◽  
A. P. Malozemoff ◽  
Y. Yeshurun
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Single Crystal ◽  
Field Dependence ◽  
Flux Pinning ◽  
Strong Field ◽  
Meissner Effect ◽  
Glassy Behavior ◽  
Low Magnetic Field ◽  
Flux Expulsion

ABSTRACTWe report a strong field-dependence (from 0.1% to 71%) of flux expulsion (Meissner effect) in a single crystal of YBa2Cu3Ox in magnetic fields from 36 kOe down to 50 mOe. The data is discussed in the context of flux pinning forces and glassy behavior.

STUDIES OF F ON SUPERCONDUCTIVITY IN HIGH-Tc (Bi,Pb)SrCaCu(O,F) SUPERCONDUCTORS

1993 ◽  
Vol 07 (17) ◽  
pp. 1127-1132
Author(s):  
JIANGUO CAI ◽  
XIAOLONG ZHANG ◽  
XIANGHUA ZHOU ◽  
QIN WEI
Keyword(s):  
Critical Current Density ◽  
Flux Pinning ◽  
Weak Link ◽  
Meissner Effect ◽  
Experimental Methods ◽  
Residual Magnetization ◽  
High Tc ◽  
Bean Model ◽  
Pinning Potential ◽  
The Difference

In this article, the experimental results of the superconductivity in high-Tc (Bi,Pb) 2 Sr 2 Ca 2 Cu 3( O y, F x), x = 0–0.84, is described. Its critical current density Jc is about ten times larger than that of undoped F sample undergoing the same technology. The causes for the increase in Jc are studied by several experimental methods. The difference in quantity between Meissner effect and shield effect indicates that the effect on superconductivity is from the weak-link regions of the superconductor grains. SEM shows that F atoms doped in BPSCCO superconductor can make its grains grow larger, arrange regularly, and increase in touch area. These changes strengthen the netty link between grains. The magnitude of residual magnetization of F-doped sample is eight times as large as that of the undoped one. The flux pinning potential U0 is calculated from the Bean model. The U0 in F-doped sample (when H = 64 Oe, x = 0.64) is eight times as large as that in the undoped one.

scholarly journals Enhancement of superconducting properties and flux pinning mechanism on Cr0.0005NbSe2 single crystal under Hydrostatic pressure

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
S. Arumugam ◽  
Manikandan Krishnan ◽  
Kent Ishigaki ◽  
Jun Gouchi ◽  
Rukshana Pervin ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Single Crystal ◽  
Flux Pinning ◽  
Superconducting Properties ◽  
Pinning Mechanism

Flux pinning property in a single crystal NdBa2Cu3Oy superconductor

2005 ◽  
Vol 426-431 ◽  
pp. 295-299 ◽  
Author(s):  
M.N. Hasan ◽  
T. Kurokawa ◽  
M. Kiuchi ◽  
E.S. Otabe ◽  
T. Matsushita ◽  
...  
Keyword(s):  
Single Crystal ◽  
Flux Pinning

CRYSTALLIZATION AND MAGNETO-TRANSPORT CHARACTERISTICS IN MOD YBa2Cu3O7-δ FILMS

2009 ◽  
Vol 23 (17) ◽  
pp. 3470-3475 ◽  
Author(s):  
BO GAO ◽  
LILIANG YING ◽  
JINLEI LIU ◽  
YUMING LU ◽  
ZHIYONG LIU ◽  
...  
Keyword(s):  
Single Crystal ◽  
Field Dependence ◽  
Power Law ◽  
Flux Pinning ◽  
Crystallization Process ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Ybco Films ◽  
Metal Trifluoroacetates ◽  
Increasing Temperature

YBa 2 Cu 3 O 7-δ (YBCO) films are prepared on the substrate of single crystal LaAlO 3 (LAO) by using metal trifluoroacetates deposition (TFA-MOD). The phase evolvement, magneto-transport and flux pinning characteristics in MOD - YBCO films are studied. It is revealed that Ba - Cu - O and Y - Cu - O precipitates are formed and can be controlled by optimum crystallization process. The field dependence of Jc ( H // c ) shows that the accommodation field Hacc decreases exponentially with increasing temperature and the power-law relationship holds in the medium fields with an exponent α of about 0.67, nearly independent of temperatures. Compared with the samples grown by pulsed laser deposition, MOD films have larger Hacc at higher temperatures (> 50 K) indicating that the value of the exponent α is affected by the precipitates entrapped in the YBCO matrix.

Flux Pinning by Collision Cascades and Large Defect Clusters in Single Crystal YBa 2 Cu 3 O 7−δ

1992 ◽  
Vol 20 (6) ◽  
pp. 541-546 ◽  
Author(s):  
H. P Wiesinger ◽  
F. M Sauerzopf ◽  
H. W Weber ◽  
H Gerstenberg ◽  
G. W Crabtree
Keyword(s):  
Single Crystal ◽  
Flux Pinning ◽  
Large Defect ◽  
Defect Clusters

TEMPERATURE SCALING OF THE FLUX PINNING FORCE FOR SmBa2Cu3O7-x SINGLE CRYSTAL

2005 ◽  
Vol 19 (01n02) ◽  
pp. 55-58
Author(s):  
L. ZHANG ◽  
G. LIU ◽  
X. LENG ◽  
X. B. XU ◽  
S. Y. DING ◽  
...  
Keyword(s):  
Single Crystal ◽  
Flux Pinning ◽  
Scaling Law ◽  
Force Density ◽  
Pinning Force ◽  
Pinning Mechanism ◽  
Maximum Value ◽  
Temperature Scaling ◽  
Pinning Force Density ◽  
Flux Pinning Force

Magnetic critical current density was measured at various temperatures and fields for SmBa 2 Cu 3 O 7-x single crystal. Pronounced second peaks were observed at intermediate fields and temperatures. Normalized pinning force density [Formula: see text] exhibited a clear scaling law when H was normalized by H max where the pinning force density has the maximum value. This is an indication that a single pinning mechanism exists in the investigated temperature region.

Increase of Jc and NO spectroscopic gap in single-crystal Bi2Sr2CaCu2O8 with ion-induced flux-pinning sites

1992 ◽  
Author(s):  
Michael C. Martin ◽  
C. Kendziora ◽  
D. Mandrus ◽  
L. Mihaly ◽  
R. Lefferts
Keyword(s):  
Single Crystal ◽  
Flux Pinning
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