scholarly journals Formation of artificially-Layered Thin-Film Compounds Using Pulsed-Laser Deposition

1995 ◽  
Vol 388 ◽  
Author(s):  
David P. Norton ◽  
B. C. Chakoumakos ◽  
D. H. Lowndes ◽  
J. D. Budai
Keyword(s):  
Thin Film ◽  
Pulsed Laser Deposition ◽  
Layer Structure ◽  
Finite Thickness ◽  
Pulsed Laser ◽  
Unit Cell ◽  
Laser Deposition ◽  
Thickness Variation ◽  
Infinite Layer ◽  
Layered Thin Film

AbstractSuperlattice structures, consisting of SrCuO2, (Sr,Ca)CuO2, and BaCuO2 layers in the tetragonal, "infinite layer" crystal structure, have been grown by pulsed-laser deposition (PLD). Superlattice chemical modulation is observed for structures with component layers as thin as a single unit cell (~3.4 Å), indicating that unit-cell control of (Sr,Ca)CuO2 growth is possible using conventional pulsed-laser deposition over a wide oxygen pressure regime. X-ray diffraction intensity oscillations, due to the finite thickness of the film, indicate that these films are extremely flat with a thickness variation of only ~20 Å over a length scale of several thousand angstroms. Using the constraint of epitaxy to grow metastable cuprates in the infinite layer structure, novel high-temperature superconducting structural families have been formed. IN particular, epitaxially-stabilized SrCuO2/BaCuO2 superlattices, grown by sequentially depositing on lattice-matched (100) SrTiO3 from BaCuO2 and SrCuO2 ablation targets in a PLD system, show metallic conductivity and superconductivity at Tc(onset) ~70 K. these results show that pulsed-laser deposition and epitaxial stabilization have been used to effectively "engineer" artificially-layered thin-film materials.

scholarly journals Formation of artificially-layered thin-film compounds using pulsed-laser deposition

1995 ◽  
Author(s):  
D.P. Norton ◽  
B.C. Chakoumakos ◽  
D.H. Lowndes ◽  
J.D. Budai
Keyword(s):  
Thin Film ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Layered Thin Film

Pulsed-Laser Deposition and Characterization of Sr1−xNdxCuOy of “Infinite-Layer” Structure

1993 ◽  
pp. 207-210
Author(s):  
Nobuyuki Sugii ◽  
Koichi Kubo ◽  
Kiyoshi Yamamoto ◽  
Michiharu Ichikawa ◽  
H. Yamauchi
Keyword(s):  
Pulsed Laser Deposition ◽  
Layer Structure ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Infinite Layer

Growth of Sr1−xNdxCuOy Thin Films by Rf-Magnetron Sputtering and Pulsed-Laser Deposition

1992 ◽  
Vol 275 ◽  
Author(s):  
Nobuyuki Sugii ◽  
Michiharu Ichikawa ◽  
Koichi Kubo ◽  
Takeshi Sakurai ◽  
Kiyoshi Yamamoto ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Pulsed Laser Deposition ◽  
Layer Structure ◽  
Pulsed Laser ◽  
Rf Magnetron Sputtering ◽  
Lattice Parameter ◽  
Laser Deposition ◽  
Infinite Layer ◽  
Sputter Deposited

ABSTRACTSr1−xNdxCuOy thin films are grown on SrTiO3 substrates by rf-magnetron sputtering and pulsed-laser deposition. The sputter-deposited film with x=0 has an “infinite-layer” structure whose lattice constants are: α=0.390 nm and c=0.347 nm. When x is larger than 0.1, the films contain a phase of the Sr14CuO24O41 structure. The laser-deposited films of Sr1−xNdxCuOy with x≤.075 were single phase of the “infinite-layer” structure. The lattice parameter c decreased and the lattice parameter αincreased, as the Nd content, x, increased. The films with α=0.10 and 0.125 exhibited superconducting onset temperatures around 26 K. Weak Meissner signals were observed for these films at temperatures below 30 K.

scholarly journals Growth of Nd:potassium gadolinium tungstate thin-film waveguides by pulsed laser deposition

2000 ◽  
Vol 76 (18) ◽  
pp. 2490-2492 ◽  
Author(s):  
P. A. Atanasov ◽  
R. I. Tomov ◽  
J. Perriére ◽  
R. W. Eason ◽  
N. Vainos ◽  
...  
Keyword(s):  
Thin Film ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Thin Film Waveguides
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