Hydroxylated secondary dopants for surface resistance enhancement in transparent poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonate) thin films

2004 ◽  
Vol 142 (1-3) ◽  
pp. 187-193 ◽  
Author(s):  
Brett D Martin ◽  
Nikolay Nikolov ◽  
Steven K Pollack ◽  
Alexey Saprigin ◽  
R Shashidhar ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Resistance

Correlation between surface resistance of Yba2Cu3O7-δ thin films and oxygen pressure during deposition process

1997 ◽  
Vol 282-287 ◽  
pp. 591-592 ◽  
Author(s):  
R.X. Wu ◽  
S.Z. Yang ◽  
Y.L. Zhou ◽  
B.B. Jin ◽  
M. Qian ◽  
...  
Keyword(s):  
Thin Films ◽  
Oxygen Pressure ◽  
Surface Resistance ◽  
Deposition Process

rf surface resistance of Y-Ba-Cu-O thin films

1988 ◽  
Vol 38 (10) ◽  
pp. 7019-7022 ◽  
Author(s):  
M. S. DiIorio ◽  
Alfredo C. Anderson ◽  
B. -Y. Tsaur
Keyword(s):  
Thin Films ◽  
Surface Resistance

Surface resistance of YBa2Cu3O7  thin films on MgO lattice-matched BaZrO3buffer layers

2004 ◽  
Vol 17 (3) ◽  
pp. 337-341 ◽  
Author(s):  
Masashi Mukaida ◽  
Yuya Yamazaki ◽  
Yuki Shingai ◽  
Sayoko Makino ◽  
Masanobu Kusunoki ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Resistance ◽  
Lattice Matched

THE EFFECT OF THE INTERACTION BETWEEN THE FILMS AND THE SUBSTRATES ON THE MICROWAVE PROPERTIES Of YBCO THIN FILMS

2007 ◽  
Vol 21 (18n19) ◽  
pp. 3224-3226
Author(s):  
LIBIN SHI ◽  
YUNFEI WANG ◽  
YUYANG KE ◽  
QUANWU WANG ◽  
ZHEN ZHANG ◽  
...  
Keyword(s):  
Experimental Data ◽  
Thin Films ◽  
Resonant Frequency ◽  
Temperature Dependence ◽  
Surface Resistance ◽  
Microwave Properties ◽  
Microwave Surface Resistance ◽  
Microstrip Resonator ◽  
Lower Temperature ◽  
Xrd Patterns

The microwave properties of YBa 2 Cu 3 O 7- x / LaAlO 3 (YBCO/LAO) and YBa 2 Cu 3 O 7- x / MgO (YBCO/MgO) thin films have been investigated by microstrip resonator technique. The penetration depth λ0(0 K ) and the microwave surface resistance Rs can be obtained by analyzing the experimental data of the temperature dependence of resonant frequency, unload quality factor of the microstrip resonator. The stress in the two thin films can be obtained from their XRD patterns. The result shows that the stronger stress in YBCO/LAO thing film makes it have larger microwave surface resistance at lower temperature.

Dependence of Surface Resistance in HTS Thin Films on a DC Magnetic Field

2005 ◽  
Vol 15 (2) ◽  
pp. 3692-3695 ◽  
Author(s):  
A. Saito ◽  
M. Shirakawa ◽  
K. Kitamura ◽  
Y. Noguchi ◽  
M. Mukaida ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Surface Resistance ◽  
Dc Magnetic Field

Microstructure and microwave properties of YBCO thin films grown on MgO and SrTiO3 by CVD

1991 ◽  
Vol 6 (11) ◽  
pp. 2259-2263 ◽  
Author(s):  
K.H. Young ◽  
McD. Robinson ◽  
G.V. Negrete ◽  
T. Yamashita ◽  
T. Hirai ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Resistance ◽  
Large Fraction ◽  
Ground Plane ◽  
Chemical Vapor ◽  
Microwave Properties ◽  
Secondary Phases ◽  
Microstrip Resonator ◽  
Cavity Measurement ◽  
5 Ghz

The microstructure and microwave properties of YBa2Cu3O7−δ thin films grown on SrTiO3 (100) and MgO (100) substrates by chemical vapor deposition have been studied. Both 100 GHz cavity measurement of surface resistance and ground plane substitution in a 5 GHz microstrip resonator show that films on SrTiO3 have better microwave properties than those on MgO. Although there are some a-axis grains and secondary phases on the surface, a large fraction of each film on SrTiO3 is epitaxial with its c axis normal to the substrate. The 100 GHz surface resistance of these films is less than copper for temperature ⋚ 82 K, and approaches the detection limit at 10–20 K. For the films on MgO, c-axis grains of different in-plane rotation are found together with some a-axis needle-like grains. The grain boundaries are detrimental to the microwave properties, and the resulting surface resistance at 100 GHz and 10–20 K is about 20 mΩ higher than that of films on SrTiO3.

Effect of underdoping on the microwave surface resistance of YBa2Cu3Oz thin films

2004 ◽  
Vol 96 (11) ◽  
pp. 6527-6533 ◽  
Author(s):  
M. Murugesan ◽  
H. Obara ◽  
S. Kosaka ◽  
H. Yamasaki ◽  
B. Prijamboedi
Keyword(s):  
Thin Films ◽  
Surface Resistance ◽  
Microwave Surface Resistance
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