Microwave power handling capability of HTS superconducting thin films: weak links and thermal effects induced limitation

1999 ◽  
Vol 9 (2) ◽  
pp. 2456-2459 ◽  
Author(s):  
J. Wosik ◽  
L.-M. Xie ◽  
R. Grabovickic ◽  
T. Hogan ◽  
S.A. Long
Keyword(s):  
Thin Films ◽  
Microwave Power ◽  
Thermal Effects ◽  
Weak Links ◽  
Superconducting Thin Films ◽  
Power Handling ◽  
Power Handling Capability

ANOMALOUS BEHAVIORS OF NON-RESONANT MICROWAVE ABSORPTIONS OF SUPERCONDUCTORS

2000 ◽  
Vol 14 (16) ◽  
pp. 1633-1650
Author(s):  
K. SUGAWARA ◽  
N. ARAI ◽  
A. KOUZUKI ◽  
S. ICHIMURA ◽  
H. NAOI ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Applied Magnetic Field ◽  
Microwave Power ◽  
Superconducting Thin Films ◽  
Modulation Amplitude ◽  
Directional Effect ◽  
System A ◽  
Powder Samples ◽  
Preliminary Study

The non-resonant microwave absorption (NRMA) measurements have been intensively performed for superconducting thin films of YBa 2 Cu 3 O y fabricated on MgO (100) substrates and powder samples of LaSrCuO systems. In order to complement the study, we also review the NRMA of BiSrCaCuO system. A particular attention has been paid to the following phenomena: (i) phases, (ii) effect of current, (iii) directional effect of applied magnetic field, (iv) hysteresis, (v) microwave power absorbed as a function of magnetic field, (vi) linewidth in the vicinity of T c , and (vii) modulation amplitude effect. A preliminary study on ( La 0.98 Dy 0.02)1.85 Sr 0.15 CuO 4 was also reported.

Evidence for Weak Link Effects in Epitaxial Thin Films of YBCO on LaAlO3

1992 ◽  
Vol 275 ◽  
Author(s):  
J. Bohandy ◽  
B. F. Kim ◽  
K. Moorjani ◽  
F. J. Adrian
Keyword(s):  
Thin Films ◽  
Grain Boundaries ◽  
Weak Link ◽  
Weak Links ◽  
Superconducting Thin Films ◽  
Epitaxial Thin Films ◽  
High Quality ◽  
Microwave Loss

ABSTRACTEvidence of weak link effects in epitaxial thin films of YBa2Cu3O7-yon LaAlO3 is obtained from magnetically modulated resistance (MMR) measurements. This result suggests that weak links could provide a mechanism for the residual microwave loss in high quality superconducting thin films which contain predominantly low angle grain boundaries.

BEHAVIOUR OF ORIENTED POLYCRYSTALLINE YBaCuO SUPERCONDUCTING THIN FILMS IN A WEAK MAGNETIC FIELD

1990 ◽  
Vol 04 (15) ◽  
pp. 975-982
Author(s):  
H.H. WEN ◽  
X.W. CAO ◽  
J.Z. SHI ◽  
W.Z. SHI ◽  
W.G. YAO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Critical Field ◽  
Weak Magnetic Field ◽  
Flow Resistance ◽  
Weak Links ◽  
Superconducting Thin Films ◽  
Flux Flow ◽  
Granular Superconductivity ◽  
Oriented Polycrystalline

We determined a few characteristics of granular superconductivity through magnetoresistance measurements made on oriented polycrystalline YBaCuO superconducting thin films, and found that, at 77.3 K, the critical field for breaking a major portion of the superconducting weak links between grains was about 80 G, while the average lower critical field of the grains was about 175 G. Detail analyses on flux flow resistance show that a maximum of the increasing of flux flow resistance induced by a unit field will exist at a specified temperature, which we think is related to the dependence of the pinning energy on the temperature.

Microwave-power handling capability of HgBa2CaCu2O6+δ superconducting microstrip lines

2001 ◽  
Vol 79 (15) ◽  
pp. 2417-2419 ◽  
Author(s):  
Roberto S. Aga ◽  
Yi-Yuan Xie ◽  
Shao-Lin Yan ◽  
Judy Z. Wu ◽  
Siyuan S. Han
Keyword(s):  
Microwave Power ◽  
Microstrip Lines ◽  
Power Handling ◽  
Power Handling Capability

Power Handling Capability of Large Area HTS Thin Films at Microwave Frequencies

1993 ◽  
pp. 1151-1154 ◽  
Author(s):  
William L. Holstein ◽  
Z.-Y. Shen ◽  
Charles Wilker ◽  
Dean W. Face ◽  
Dennis J. Kountz
Keyword(s):  
Thin Films ◽  
Large Area ◽  
Microwave Frequencies ◽  
Power Handling ◽  
Power Handling Capability

scholarly journals Scanning electron microscope identification of weak links in superconducting thin films

1988 ◽  
Vol 53 (13) ◽  
pp. 1210-1212 ◽  
Author(s):  
Don Monroe ◽  
W. S. Brocklesby ◽  
R. C. Farrow ◽  
M. Hong ◽  
S. H. Liou
Keyword(s):  
Thin Films ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Weak Links ◽  
Superconducting Thin Films ◽  
Scanning Electron
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