scholarly journals Microscopic Structure and Flux Pinning Effect in the SmxBa1-xCuOy System.

1993 ◽  
Vol 40 (2) ◽  
pp. 151-155
Author(s):  
Shigeru Katsuyama ◽  
Hiromu Izumida ◽  
Kazuhiko Majima ◽  
Hiroshi Nagai
Keyword(s):  
Flux Pinning ◽  
Microscopic Structure ◽  
Pinning Effect

Flux pinning effect of small size defects in YBa2Cu3O7−δ

1994 ◽  
Vol 89 (2) ◽  
pp. 93-95 ◽  
Author(s):  
Fang Minghu ◽  
Hu Gangjin ◽  
Cai Meng ◽  
Jiao Zhenkuan ◽  
Zhang Qirui
Keyword(s):  
Flux Pinning ◽  
Pinning Effect

Flux pinning effect of embedded carbon nanotubes in Bi2Sr2CaCu2O8

2000 ◽  
Vol 341-348 ◽  
pp. 1269-1270 ◽  
Author(s):  
D.H. Galván ◽  
JunHo Kim ◽  
M.B. Maple ◽  
G.A. Hirata ◽  
E. Adem
Keyword(s):  
Carbon Nanotubes ◽  
Flux Pinning ◽  
Pinning Effect

Generation and Flux-Pinning Effect of High-Density Dislocation inHigh-TcSuperconductorYBa2Cu3O7-δ

1994 ◽  
Vol 33 (Part 1, No. 3A) ◽  
pp. 1309-1313 ◽  
Author(s):  
Xuguang Zheng ◽  
Shido Nishioka ◽  
Hisao Kuriyaki ◽  
Kazuyoshi Hirakawa
Keyword(s):  
Flux Pinning ◽  
High Density ◽  
Pinning Effect

scholarly journals FLUX PINNING EFFECT OF OXYGEN DEFICIENCIES IN YBa2Cu3Oy

1993 ◽  
Vol 42 (10) ◽  
pp. 1669
Author(s):  
HU GANG-JIN ◽  
FANG MING-HU ◽  
LI ZHONG-XIAN ◽  
ZENG XING-BIN ◽  
CHEN NAN-SONG ◽  
...  
Keyword(s):  
Flux Pinning ◽  
Pinning Effect ◽  
Effect Of Oxygen

scholarly journals Flux-pinning behaviors and mechanism according to dopant level in (Fe, Ti) particle-doped $$\text {MgB}_2$$ superconductor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
H. B. Lee ◽  
G. C. Kim ◽  
Young Jin Shon ◽  
Dongjin Kim ◽  
Y. C. Kim
Keyword(s):  
Field Dependence ◽  
Flux Pinning ◽  
Experimental Results ◽  
The Other ◽  
Pinning Effect ◽  
Dopant Level ◽  
Segregation Effect ◽  
Volume Defect ◽  
Ti Particles ◽  
The Difference

AbstractWe have studied flux-pinning effects of $$\text {MgB}_2$$ MgB 2 superconductor by doping (Fe, Ti) particles of which radius is 163 nm on average. 5 wt.% (Fe, Ti) doped $$\text {MgB}_2$$ MgB 2 among the specimens showed the best field dependence of magnetization and 25 wt.% one did the worst at 5 K. The difference of field dependence of magnetization of the two specimens increased as temperature increased. Here we show experimental results of (Fe, Ti) particle-doped $$\text {MgB}_2$$ MgB 2 specimens according to dopant level and the causes of the behaviors. Flux-pinning effect of volume defects-doped superconductor was modeled in ideal state and relative equations were derived. During the study, we had to divide M-H curve of volume defect-dominating superconductor as three discreet regions for analyzing flux-pinning effects, which are diamagnetic increase region after $$\text {H}_{c1}$$ H c 1 , $$\Delta \text {H}=\Delta \text {B}$$ Δ H = Δ B region, and diamagnetic decrease region. As a result, flux-pinning effects of volume defects decreased as dopant level increased over the optimal dopant level, which was caused by decrease of flux-pinning limit of a volume defect. And similar behaviors are obtained as dopant level decreased below the optimal dopant level, which was caused by the decreased number of volume defects. Comparing the model with experimental results, deviations increased as dopant level increased over the optimal dopant level, whereas the two was well matched on less dopant level. The behavior is considered to be caused by the segregation of the volume defects. On the other hand, the cause that diamagnetic properties of over-doped $$\text {MgB}_2$$ MgB 2 specimens dramatically decreased as temperature increased was the double decreases of flux-pinning limit of a volume defect and the segregation effect, which are caused by over-doping and temperature increase.

scholarly journals Flux pinning effect and magnetic torque in Y1Ba2Cu3Oy single crystal.

1989 ◽  
Vol 13 (2) ◽  
pp. 469-472 ◽  
Author(s):  
H. Tomita ◽  
H. Miyajima ◽  
S. Chikazumi ◽  
H. Takeya ◽  
F. Takei
Keyword(s):  
Single Crystal ◽  
Flux Pinning ◽  
Magnetic Torque ◽  
Pinning Effect
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