Surface morphology of (Hg,Re)Ba/sub 2/CaCu/sub 2/O/sub y/ thin films prepared by pulsed laser deposition

2003 ◽  
Vol 13 (2) ◽  
pp. 2809-2812
Author(s):  
J.H. Su ◽  
P.V.P.S.S. Sastry ◽  
J. Schwartz
2009 ◽  
Vol 256 (4) ◽  
pp. 1227-1231 ◽  
Author(s):  
M. Zakir Hossain ◽  
Tomohiro Mimura ◽  
Noboru Miura ◽  
Shin-ichiro Uekusa

2008 ◽  
Vol 368-372 ◽  
pp. 305-307
Author(s):  
Kan Song Chen ◽  
Hao Shuang Gu ◽  
Jian San Zou ◽  
Li Wang ◽  
Yi Huang

SrBi2Nb2O9 (SBN) thin films were prepared on fused quartz substrates at room temperature by pulsed laser deposition. The crystallization behavior and surface morphology were studied at various oxygen pressures by XRD and AFM. The results indicated that the films had polycrystalline structure with a single layered perovskite phase, and exhibited higher crystalline quality, less rough surface morphology, and larger grain size with increasing oxygen pressure. The optical transmittance of the samples was measured in the wavelength range 200-900 nm, and the dispersion relation of refractive indices and wavelength was found to follow the single electron oscillation model. The energy gap of SBN films grown at oxygen pressure of 5 Pa was estimated to be around 3.88 eV by assuming a direct transition between valence and conduction bands.


2018 ◽  
Vol 662 ◽  
pp. 83-89 ◽  
Author(s):  
Sadia Sharif ◽  
Ghulam Murtaza ◽  
Turgut Meydan ◽  
Paul I. Williams ◽  
Jerome Cuenca ◽  
...  

2005 ◽  
Vol 475-479 ◽  
pp. 3807-3810 ◽  
Author(s):  
X.P. Zhang ◽  
Y.S. Xiao ◽  
H. Zhou ◽  
B.T. Xie ◽  
C.X. Yang ◽  
...  

In this paper, we report the growth of NaxCoO2 thin films by pulsed-laser deposition (PLD). It is shown that the concentration of sodium is very sensitive to the substrate temperature and the target-substrate distance due to the evaporation of sodium during the deposition. α'-phase Na0.75CoO2 and γ-phase Na0.71CoO2 thin films can be obtained with different conditions. Correspondingly, the surface morphology of the films changes from flake-like to particle-like. The temperature dependence of resistivity for the films prepared with the optimal condition shows metallic behavior, consistent with the data of NaxCoO2 single crystals. This work demonstrates that PLD is a promising technique to get high quality NaxCoO2 thin films.


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