Homogeneity in the Microwave Surface Resistance of Large YBa2Cu3O7−δ Superconductor Films Coated with Au

2020 ◽  
Vol 16 (3) ◽  
pp. 216-223
Author(s):  
Woo Il Yang ◽  
Sungho Lee ◽  
Ho Sang Jung ◽  
Hye-Rim Kim ◽  
Sang Young Lee
Keyword(s):  
Surface Resistance ◽  
Microwave Surface Resistance ◽  
Superconductor Films

Effects of Ageing on the Microwave Surface Resistance of MgB2 Superconductor Films Stored in Low Vacuum

2019 ◽  
Vol 15 (5) ◽  
pp. 572-581
Author(s):  
Sungho Lee ◽  
Jiyoung Jang ◽  
Ho Sang Jung ◽  
Won Nam Kang ◽  
Sang Young Lee
Keyword(s):  
Surface Resistance ◽  
Mgb2 Superconductor ◽  
Microwave Surface Resistance ◽  
Superconductor Films

Microwave Surface Resistance of Bi2Sr2CaCu2OxThick Films on Large-Area Metallic Substrates

1997 ◽  
Vol 36 (Part 1, No. 6A) ◽  
pp. 3478-3484 ◽  
Author(s):  
Shigemi Inagaki ◽  
Kiyomitsu Asano ◽  
Eizi Ezura ◽  
Shuetsu Haseyama ◽  
Shigeru Isagawa ◽  
...  
Keyword(s):  
Surface Resistance ◽  
Microwave Surface Resistance ◽  
Large Area ◽  
Metallic Substrates

scholarly journals Microwave surface resistance of pristine and neutron-irradiated MgB2 samples in magnetic field

2008 ◽  
Vol 63 (2) ◽  
pp. 165-177 ◽  
Author(s):  
M. Bonura ◽  
A. Agliolo Gallitto ◽  
M. Li Vigni ◽  
C. Ferdeghini ◽  
C. Tarantini
Keyword(s):  
Magnetic Field ◽  
Surface Resistance ◽  
Microwave Surface Resistance

MICROWAVE SURFACE RESISTANCE OF YBa2Cu3O7-δ

1988 ◽  
pp. 927-930
Author(s):  
Mineo Kobayashi ◽  
Katsuya Okabe ◽  
Seiichi Tanuma ◽  
Izumi Sankawa ◽  
Makoto Sato ◽  
...  
Keyword(s):  
Surface Resistance ◽  
Microwave Surface Resistance

Microwave surface resistance of bulkYBa2Cu3O6+xmaterial

1988 ◽  
Vol 38 (10) ◽  
pp. 7023-7025 ◽  
Author(s):  
A. Fathy ◽  
D. Kalokitis ◽  
E. Belohoubek ◽  
H. G. K. Sundar ◽  
A. Safari
Keyword(s):  
Surface Resistance ◽  
Microwave Surface Resistance

Peak effect at microwave frequencies in swift heavy ion irradiated YBa2Cu3O7-δthin films - investigation of vortex dynamics

2001 ◽  
Vol 689 ◽  
Author(s):  
Tamalika Banerjee ◽  
A. R. Bhangale ◽  
P. Raychaudhuri ◽  
D. Kanjilal ◽  
R. Pinto
Keyword(s):  
Vortex Dynamics ◽  
Surface Resistance ◽  
Flux Line ◽  
Heavy Ion ◽  
Peak Effect ◽  
Microwave Surface Resistance ◽  
Line Lattice ◽  
Microwave Frequencies ◽  
Columnar Defects ◽  
Pronounced Peak

ABSTRACTThe vortex dynamics at microwave frequencies in YBa2Cu3O7-δ(YBCO) films has been studied. We observe a peak in the microwave surface resistance Rs vs. T (temperature) plots at 4.88 GHz in some films in magnetic fields (upto 0.8 T) whereas a few films do not show a pronounced peak in their surface resistance. This is associated with the ‘peak-effect’ phenomenon and reflects the order-disorder transformation of the flux-line lattice near the transition temperature. Introduction of artificial pinning centers like columnar defects as a result of irradiation with 200 MeV Ag ion leads to the suppression of the peak in films exhibiting the ‘peak-effect’. Interestingly, a peak is seen to develop in those films that initially did not show a peak in the surface resistance before irradiation. These results and the dynamics of the vortices at microwave frequencies for the unirradiated and irradiated films will be discussed.

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