High Tc superconducting thin films prepared by pulsed Nd:YAG laser ablation

1988 ◽  
Author(s):  
L. Lynds ◽  
B. R. Weinberger ◽  
T. W. Grudkowski
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Nd:Yag Laser ◽  
Superconducting Thin Films ◽  
High Tc ◽  
Pulsed Nd:Yag Laser

Tailored High-Tc Superconducting Thin Films Prepared by Layer-By-Layer Deposition with Excimer Laser

1989 ◽  
Vol 169 ◽  
Author(s):  
Tomoji Kawai ◽  
Masaki Kanai ◽  
Hitoshi Tabata ◽  
Shichio Kawai
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Excimer Laser ◽  
Weak Interaction ◽  
Superconducting Thin Films ◽  
Layer By Layer ◽  
Deposition Method ◽  
High Tc ◽  
Excimer Laser Ablation ◽  
Layer Deposition

AbstractBy using 1ayer-by-1ayer successive deposition method with excimer laser ablation, the distance between CuO2 planes in the Bi2Sr2Ca1Cu2Oy superconductor has been controlled and super lattices with concentration modulation of Y and Ca have been formed. From the properties of these ‘Tailored films’, it is suggested that there is an interaction between CuO2 layers across Ca layer to affect the Tc value, but there is a very weak interaction across Bi2O2 blocking layers.

Interface Effects of Laser Ablated and Sputtered High Tc Superconducting Thin Films

1987 ◽  
Vol 99 ◽  
Author(s):  
B. Dam ◽  
T. S. Baller ◽  
G. N. A. Van Veen ◽  
H. A. M. Van Hal ◽  
J. W. C. De Vries ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Superconducting Thin Films ◽  
High Tc ◽  
Interface Effects

ABSTRACTHigh Tc superconducting thin films were prepared by DC triode sputtering and laser ablation. With both deposition methods we were able to fabricate thin films on SrTiO3 which show an onset at Tcf=92 K. The superconductive transition is complete at Tcf=86 K. On other substrates like Al2O3, MgO and ZrO2 relatively poor results were obtained.

High Tc Superconducting Bi-(Pb-)Sr-Ca-Cu-O Films Deposited by Pulsed Nd:Yag Laser Ablation

1989 ◽  
Vol 169 ◽  
Author(s):  
J. Levoska ◽  
J. Hagberg ◽  
P. Pusa ◽  
A. Uusimäki ◽  
S. Leppävuori
Keyword(s):  
Laser Ablation ◽  
Nd:Yag Laser ◽  
Room Temperature ◽  
Substrate Surface ◽  
Amorphous Films ◽  
High Tc ◽  
Pulsed Nd:Yag Laser ◽  
Resistivity Measurements ◽  
Annealing Conditions ◽  
532 Nm

AbstractHigh To superconducting Bi-(Pb-)Sr-Ca-Cu-O thin films were ablated on MgO(l00) substrates at room temperature using a Nd:YAG laser at 1064 or 532 nm. The target materials had compositions near Bi2-xpbxSr2Ca2+yCu3+zOy (x<0.6, y,z<l) and their zero resistivity temperatures were 101 - 105 K. The amorphous films were crystallized either by annealing near 850°C or they were first melted and then annealed. The effects of laser ablation parameters and annealing conditions were investigated. The films were studied by XRD, SEM/EDS and resistivity measurements.The best films were annealed near 850 °C and they consisted mainly of the 2223 phase. These films had T9(midpoint) at 107 K and zero resistivity at 100 K. In the melt-treated films the amount of the 2223 phase as well as Tc was lower. The superconducting phases in the annealed films were strongly oriented with their c-axes perpendicular to the substrate surface.

Laser ablation of YBCO targets and optical-breakdown-assisted PLD for high T c superconducting thin films deposition

1998 ◽  
Author(s):  
Ileana Apostol ◽  
Razvan Stoian ◽  
C. Luculescu ◽  
Razvan V. Dabu ◽  
Aurel Stratan ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Optical Breakdown ◽  
Superconducting Thin Films

Deposition of hydroxyapatite thin films by Nd:YAG laser ablation: a microstructural study

2004 ◽  
Vol 39 (13) ◽  
pp. 2089-2101 ◽  
Author(s):  
L.C. Nistor ◽  
C. Ghica ◽  
V.S. Teodorescu ◽  
S.V. Nistor ◽  
M. Dinescu ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Nd:Yag Laser ◽  
Microstructural Study

X-Ray Diffraction Analysis of High Tc Superconducting Thin Films

1989 ◽  
pp. 269-278
Author(s):  
T. C. Huang ◽  
A. Segmüller ◽  
W. Lee ◽  
V. Lee ◽  
D. Bullock ◽  
...  
Keyword(s):  
Thin Films ◽  
Diffraction Analysis ◽  
Superconducting Thin Films ◽  
X Ray Diffraction ◽  
High Tc ◽  
X Ray

IN-SITU PREPARATION OF YBa2Cu3O7 SUPERCONDUCTING THIN FILMS BY PULSED Nd:YAG LASER DEPOSITION

1992 ◽  
Vol 06 (08) ◽  
pp. 477-483 ◽  
Author(s):  
QINGXIN SU ◽  
SHIFA XU ◽  
DAFU CUI ◽  
HUIBIN LU ◽  
YONGJUN TIAN ◽  
...  
Keyword(s):  
Thin Films ◽  
Substrate Temperature ◽  
Nd:Yag Laser ◽  
Ac Susceptibility ◽  
Substrate Surface ◽  
Zero Magnetic Field ◽  
Superconducting Thin Films ◽  
In Situ Preparation ◽  
Zero Resistance

High-T c superconducting thin films of YBa 2 Cu 3 O 7 were grown in-situ on (100) SrTiO 3 substrates by Nedymium:yttrium aluminum garnet [Nd:YAG] laser ablation. The effects of the substrate temperature on the transition temperature, microcrystalline structure and surface morphology of the films were discussed. Best results were obtained in the 730°–770°C range. X-ray diffraction analysis showed that these films were highly c-oriented with the c-axis perpendicular to the substrate surface. At the optimum substrate temperature, a very smooth morphology with only a few small particles were observed by scanning electron microscopy. The zero resistance temperature of these films were ≥ 90 K with a narrow transition width and the ac susceptibility measurement also gave the same result. The highest critical current density obtained at 77 K and zero magnetic field was 3.8 × 106 A/cm 2.

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