Pulsed Laser Deposition of Epitaxial LiNbO3 Films on Sapphire Substrates Using a Single Crystal Targets

1994 ◽  
Vol 361 ◽  
Author(s):  
See-Hyung Lee ◽  
Tae W. Noh ◽  
Jai-Hyung Lee ◽  
Young-Gi Kim

ABSTRACTPulsed laser deposition was used to grow epitaxial LiNbO3 films on sapphire(0001) substrates with a single crystal LiNbO3 target. Using deposition temperatures below 450 °C, LiNbO3 films with correct stoichiometry could be grown without using Li-rich targets. Rutherford backscattering spectrometry measurements showed that the oxygen to niobium ratio is 3.00 ± 0.15 to 1.00. It was also found that the crystallographic orientations of the LiNbO3 films could be controlled by adjusting the oxygen pressure during deposition. An x-ray pole figure shows that epitaxial LiNbO3 films were grown on sapphire(0001), but with twin boundaries.

1992 ◽  
Vol 7 (10) ◽  
pp. 2639-2642 ◽  
Author(s):  
R.K. Singh ◽  
Deepika Bhattacharya ◽  
S. Sharan ◽  
P. Tiwari ◽  
J. Narayan

We have fabricated Ni3Al and NiAl thin films on different substrates by the pulsed laser deposition (PLD) technique. A high energy nanosecond laser beam was directed onto Ni–Al (NiAl, Ni3Al) targets, and the evaporated material was deposited onto substrates placed parallel to the target. The substrate temperature was varied between 300 and 400 °C, and the substrate-target distance was maintained at approximately 5 cm. The films were analyzed using scanning electron microscopy, transmission electron microscopy, x-ray diffraction, and Rutherford backscattering spectrometry. At energy densities slightly above the evaporation threshold, a slight enrichment of Al was observed, while at higher energy densities the film stoichiometry was close (<5%) to the target composition. Barring a few particles, the surface of the films exhibited a smooth morphology. X-ray and TEM results corroborated the formation of Ni3Al and NiAl films from similar target compositions. These films were characterized by small randomly oriented grains with grain size varying between 200 and 400 Å.


1999 ◽  
Vol 25 (1-4) ◽  
pp. 91-102
Author(s):  
Y. Gim ◽  
K. T. Gahagan ◽  
C. Kwon ◽  
M. Hawley ◽  
V. Gopalan ◽  
...  

1995 ◽  
Vol 410 ◽  
Author(s):  
J. E. Cosgrove ◽  
P. A. Rosenthal ◽  
D. Hamblen ◽  
D. B. Fenner ◽  
C. Yang

ABSTRACTWe have grown thin films of SiC by pulsed laser deposition on silicon (100) and vicinal and non-vicinal 6H SiC (0001) substrates using a quadrupled YAG laser and a high purity dense polycrystalline SiC target. Epitaxy on all three substrate types was confirmed by x-ray diffraction, transmission electron microscopy and electron diffraction. Composition of the films was measured by Rutherford backscattering spectrometry and Scanning Auger Microprobe.


1998 ◽  
Vol 15 (12) ◽  
pp. 904-906 ◽  
Author(s):  
Pei-ran Zhu ◽  
S Yamamoto ◽  
A Miyashita ◽  
H Naramoto

1994 ◽  
Vol 360 ◽  
Author(s):  
E.P. Donovan ◽  
J.S. Horwitz ◽  
C.A. Carosella ◽  
R.C.Y. Auyeung ◽  
D.B. Chrisey ◽  
...  

AbstractTransparent, insulating ZnO thin films have been deposited in-situ by pulsed laser deposition (PLD) from sintered targets. Films were deposited on substrates of fused quartz, <0001> A12O3, polycrystalline and textured (111) Au, at several substrate deposition temperatures (TSubstrate ≤ 700° C) and background oxygen pressures (P ≤ 300 mTorr). Film structure, morphology and electrical properties were characterized by X-ray diffraction, Rutherford backscattering spectrometry, optical properties were characterized by infrared transmission and reflection, and electrical resistivity was measured normal to the films. Films were crystalline, phase pure, and c-axis oriented. ZnO films deposited onto fused quartz and <0001> sapphire showed x-ray rocking curve full width at half maxima of 5° and 0.34°, respectively. The structure of ZnO films deposited on (111) textured Au was sensitive to the degree of texturing in the Au. The resistivity of PLD ZnO films was 61-63 kΩcm which was a factor of three improvement over sputter deposited films. Deposition of Au by both PLD and IBAD showed a negative correlation between the crystalline texturing and film adherence.


RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55082-55086 ◽  
Author(s):  
Haoliang Huang ◽  
Zhenlin Luo ◽  
Yuanjun Yang ◽  
Mengmeng Yang ◽  
Haibo Wang ◽  
...  

Ultrathin Sm0.6Nd0.4NiO3−δepitaxial films were deposited by pulsed laser deposition (PLD) onto LaAlO3(LAO) single crystal substrates. TheTMIof the SNNO films remarkably decreases with the decrease of the growth oxygen pressure, while the strain state varied slightly.


2008 ◽  
Vol 388 ◽  
pp. 3-6 ◽  
Author(s):  
Yutaka Adachi ◽  
Naoki Ohashi ◽  
Isao Sakaguchi ◽  
Takeo Osawa ◽  
Haruki Ryoken ◽  
...  

(Mg,Zn)O films were grown on Zn- and O-face ZnO single crystal substrates by pulsed laser deposition. The surface morphologies of the films grown on the Zn- and O-face substrates were quite different, indicating that no domain inversion occurred in both films. The films showed markedly different features for valence band spectra obtained by hard X-ray photoemission spectroscopy. This suggests that the effect of film polarity should be considered in X-ray photoemission spectroscopy.


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