Surface resistance and nonlinear dynamic microwave losses of epitaxial HTS films

1997 ◽  
Vol 7 (2) ◽  
pp. 1236-1239 ◽  
Author(s):  
W. Diete ◽  
M. Getta ◽  
M. Hein ◽  
T. Kaiser ◽  
G. Muller ◽  
...  
Keyword(s):  
Nonlinear Dynamic ◽  
Surface Resistance ◽  
Microwave Losses ◽  
Hts Films

Demonstration of surface resistance mapping of large-area HTS films using the dielectric resonator method

2003 ◽  
Vol 383 (4) ◽  
pp. 374-378 ◽  
Author(s):  
M Kusunoki ◽  
Y Takano ◽  
K Nakamura ◽  
M Inadomaru ◽  
D Kosaka ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Surface Resistance ◽  
Large Area ◽  
Resonator Method ◽  
Hts Films

Optimum Configuration of the Antenna to the Dielectric Resonator to Measure the Accurate Surface Resistance of the HTS Films

2000 ◽  
pp. 1069-1071 ◽  
Author(s):  
Momoko Inadomaru ◽  
Daisuke Kousaka ◽  
Masanobu Kusunoki ◽  
Masashi Mukaida ◽  
Shigetoshi Ohshima
Keyword(s):  
Dielectric Resonator ◽  
Surface Resistance ◽  
Optimum Configuration ◽  
Hts Films

Temperature and dc magnetic field dependence of the surface resistance in HTS films

2005 ◽  
Vol 426-431 ◽  
pp. 1606-1610 ◽  
Author(s):  
A. Saito ◽  
M. Shirakawa ◽  
K. Kitamura ◽  
Y. Noguchi ◽  
M. Mukaida ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Surface Resistance ◽  
Magnetic Field Dependence ◽  
Dc Magnetic Field ◽  
Hts Films

Surface resistance measurements of HTS films by means of sapphire dielectric resonators

1993 ◽  
Vol 3 (3) ◽  
pp. 3043-3048 ◽  
Author(s):  
J. Krupka ◽  
M. Klinger ◽  
M. Kuhn ◽  
A. Baryanyak ◽  
M. Stiller ◽  
...  
Keyword(s):  
Surface Resistance ◽  
Dielectric Resonators ◽  
Hts Films

Electrical characteristics of HTS/manganite double layers

Open Physics ◽  
2007 ◽  
Vol 5 (4) ◽  
Author(s):  
Timur Nurgaliev ◽  
Vladimír Štrbík ◽  
Snezhanka Miteva ◽  
Blagoi Blagoev ◽  
Emil Mateev ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Surface Resistance ◽  
Charge Carriers ◽  
Double Layers ◽  
Electrical Characteristics ◽  
Magnetic Subsystem ◽  
Lsmo Film ◽  
Microwave Losses ◽  
Concentration Changes ◽  
The Difference

AbstractSuperconductor/ferromagnetic (SC/FM) Y1Ba2Cu3O7−δ /La0.7Sr0.3MnO3 (YBCO/LSMO) double layers were prepared on LaAlO3 substrates by magnetron sputtering and their electrical and microwave parameters were investigated at 77 K. In the theoretical plan, simple formulas for estimation of the sensitivity of the SC surface impedance to the concentration changes of normal charge carriers were proposed and the surface resistance R S peculiarities of both SC and FM surfaces were described. Thinner YBCO/LSMO structure was characterized by lower SC parameters and higher surface resistance R S at ∼ 4 GHz. The difference of R S of sample SC surfaces was interpreted as due to a difference between the normal charge carrier densities in these samples. R S of the FM surface was higher than that of the SC surface due to the microwave losses of the magnetic subsystem. A peak of the microwave losses, observed in the thicker double layer, was assumed to be caused by uniform FMR in the LSMO film.

Multimode Sapphire Resonator for the Measurement of Surface Resistance of HTS Films

2008 ◽  
Vol 22 (4) ◽  
pp. 319-323
Author(s):  
Cheng Zeng ◽  
Zhengxiang Luo ◽  
Qishao Zhang ◽  
Kai Yang
Keyword(s):  
Surface Resistance ◽  
Hts Films

Surface resistance measurements of HTS films placed inside a cavity with a puck resonator

2004 ◽  
Vol 403 (4) ◽  
pp. 276-282 ◽  
Author(s):  
T. Nurgaliev ◽  
L.F. Cohen ◽  
A. Purnell ◽  
L. HaO ◽  
J. Gallop
Keyword(s):  
Surface Resistance ◽  
Hts Films

MAGNETIC FIELD DEPENDENCE OF THE MICROWAVE SURFACE RESISTANCE IN MgB2 SUPERCONDUCTORS

2002 ◽  
Vol 16 (11n12) ◽  
pp. 1571-1576 ◽  
Author(s):  
A. AGLIOLO GALLITTO ◽  
S. FRICANO ◽  
M. LI VIGNI ◽  
N. N. KOLESNIKOV ◽  
M. P. KULAKOV
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Surface Resistance ◽  
Magnetic Field Dependence ◽  
Direct Reaction ◽  
Microwave Surface Resistance ◽  
Two Samples ◽  
Microwave Losses ◽  
The Magnetic Field ◽  
Mgb2 Superconductors

We report experimental results on microwave surface resistance in MgB2 superconductors. The results have been obtained using the cavity perturbation method. Two samples have been investigated: one was made up of commercial Alfa-Aesar powder and the other one was obtained by direct reaction from elements. The temperature and dc magnetic field dependence of the surface resistance has been investigated down to 4.2 K and up to 10 kOe, respectively. Our results show that microwave losses are strongly affected by the magnetic field even by a relatively weak one. In particular, an unusually enhanced field dependence of the low-T residual surface resistance has been detected in both samples.

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