Evolution of Crystal Orientation in Obliquely Deposited Magnesium Nanostructures for Hydrogen Storage Applications

2007 ◽  
Vol 1042 ◽  
Author(s):  
Mehmet F. Cansizoglu ◽  
Fumiya Watanabe ◽  
Pei-I Wang ◽  
Tansel Karabacak
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Crystal Orientation ◽  
Oblique Angle Deposition ◽  
X Ray Diffraction ◽  
Crystal Orientations ◽  
Electron Microscopy Analysis ◽  
Shadowing Effect ◽  
Microscopy Analysis ◽  
Angle Deposition

AbstractCrystal orientation (texture) is an important parameter in the hydrogen absorption and desorption properties of various materials. In this study, we investigate the formation of magnesium nanorod arrays with crystal orientations that are not normally observed in conventional Mg thin films. Mg nanorods are produced using an oblique angle deposition technique through a physical self-assembly process. In this study sputtering and thermal evaporation systems are utilized for the growth of Mg nanorods and thin films on silicon wafer pieces. We present a detailed X-ray diffraction and scanning electron microscopy analysis. It is discussed that under oblique incidence, evolution of crystal orientations with lower adatom mobility are promoted due to the shadowing effect.

SYNTHESIS AND CHARACTERIZATION OF HG-BASED SUPERCONDUCTING THIN FILMS PRODUCED STARTING FROM LASER-DEPOSITED PRECURSORS

2000 ◽  
Vol 14 (25n27) ◽  
pp. 2731-2736 ◽  
Author(s):  
M. BINDI ◽  
F. FUSO ◽  
N. PUCCINI ◽  
E. ARIMONDO ◽  
A. TAMPIERI ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Deposition ◽  
Precursor Film ◽  
Superconducting Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Electron Microscopy Analysis ◽  
Zero Resistance ◽  
Microscopy Analysis

Correctly c-axis oriented HgBa 2 CaCu 2 O 6+δ thin films have been produced on (100) MgO single crystal substrates and characterized. Pulsed laser deposition has been exploited to deposit Hg-free Re-doped precursor which then underwent synthesis in evacuated and sealed quartz tubes. X-ray diffraction pattern of the precursor target shows the expected composition of oxides. Scanning electron microscopy analysis have been performed on the surface of the precursor film. Hg-1212 films have been analyzed by θ-2θ Bragg-Brentano X-ray diffractometry. The patterns show little contributions in composition of Hg-1223 phase. The films exhibit a transition temperature >120 K with zero-resistance at around 115 K.

scholarly journals Physical Self-Assembly And Nano-Patterning

2004 ◽  
Vol 849 ◽  
Author(s):  
T.-M. Lu ◽  
D.-X. Ye ◽  
T. Karabacak ◽  
G.-C. Wang
Keyword(s):  
Self Assembly ◽  
Glancing Angle Deposition ◽  
Oblique Angle Deposition ◽  
Oblique Angle ◽  
Two Phase ◽  
Assembly Mechanism ◽  
Rotation Scheme ◽  
Glancing Angle ◽  
Shadowing Effect ◽  
Angle Deposition

AbstractIt is known that oblique angle deposition (or glancing angle deposition) can create 3D architectures that are otherwise difficult to produce using the conventional lithographic techniques. The technique relies on a self-assembly mechanism originated from a physical shadowing effect during deposition. In this paper we show examples of 3D nanostructures obtained by this oblique angle deposition on a templated substrate with regularly spaced pillar seeds. We show that common to this technique is the phenomenon of side-way growth on the seeds. The side-way growth leads to a fan-like structure at the initial stages of growth if the incident oblique angle is fixed during growth. Simulations based on a steering effect due to the attractive force between the incoming atom and the existing atoms on the surface produce a fanlike structure similar to that observed experimentally. We show that a two-phase substrate rotation scheme during deposition can dramatically reduce this fan-out effect and can lead to uniform and isolated columns.

Growth and characterization of NdBa2Cu3O7-x thin films deposited by d.c. sputtering

2000 ◽  
Vol 14 (25n27) ◽  
pp. 2664-2669
Author(s):  
M. C. CUCOLO ◽  
A. M. CUCOLO
Keyword(s):  
Thin Films ◽  
X Ray Diffraction ◽  
Surface Stability ◽  
Deposition Parameters ◽  
High Oxygen Pressure ◽  
Fabrication Procedure ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis ◽  
Diffraction Patterns

Among the ReBa 2 Cu 3 O 7-x (ReBCO, Re=rare earth) cuprate family the NdBa 2 Cu 3 O 7-x system (NdBCO) is known to have the highest critical temperature and critical current. Moreover, in comparison with the YBa 2 Cu 3 O 7-x compound, NdBCO shows a better surface stability and morfology that are basic requirements for the realization of high temperature superconducting (HTS) devices. We have investigated the fabrication procedure of NdBCO films on (001) SrTiO 3 substrates using a dc sputtering technique in high oxygen pressure. The effect of several deposition parameters on the structural and superconducting properties of the NdBCO thin films, has been investigated. The x-ray diffraction patterns showed that the deposited films were c-axis oriented without any impurity phase. The surface morfology was studied by a standard Scanning Electron Microscopy analysis (SEM). T c (ρ=0) ≥ 91 K and J c (77 K ) ≤ 0.6 106 A/cm 2 have been obtained at the optimized sputtering conditions.

FORMATION OF TWO LAYERS IN Pr1-xCaxBa2Cu3O7-y(0≤x≤0.5) THIN FILMS DEPOSITED AT DIFFERENT TEMPERATURES

2000 ◽  
Vol 14 (16) ◽  
pp. 1651-1657
Author(s):  
J. A. DÍAZ ◽  
O. CONTRERAS ◽  
J. M. SIQUEIROS
Keyword(s):  
Thin Films ◽  
X Ray Diffraction ◽  
Stabilized Zirconia ◽  
Transmission Electron Microscopy Analysis ◽  
X Ray ◽  
Cell Parameters ◽  
Transmission Electron ◽  
Electron Microscopy Analysis ◽  
Different Temperatures ◽  
Microscopy Analysis

We have grown epitaxial Pr 1-x Ca x Ba 2 Cu 3 O 7-y(0≤x≤0.5) thin films on SrTiO 3 and Yttrium stabilized zirconia (YSZ) substrates by pulsed laser deposition at different temperatures. X-ray diffraction and transmission electron microscopy analysis revealed epitaxial growth on YSZ substrates for x=0 along the a and c axis directions for T=570° C , where first the film grows oriented along a-axis and afterward, it undergoes a shift in the orientation, growing in the c-axis direction from then on. The cell parameters were c=1.166 nm and a~b=0.386 nm .

Preparation and Characterization of LiNbO3 Thin Films Derived from Metal Carboxylate Gels

2007 ◽  
Vol 336-338 ◽  
pp. 213-216 ◽  
Author(s):  
Jiu Peng Zhao ◽  
Xiang Rong Liu ◽  
Liang Sheng Qiang
Keyword(s):  
Thin Films ◽  
Pechini Method ◽  
Metal Carboxylate ◽  
X Ray Diffraction ◽  
Si Substrates ◽  
Heat Treated ◽  
Electron Microscopy Analysis ◽  
Different Temperatures ◽  
Microscopy Analysis ◽  
Ferroelectric Hysteresis

Lithium niobate thin films have been deposited on Pt/Ti/SiO2/Si substrates by the Pechini method from metal carboxylate gels and heat-treated at temperatures ranging from 400 to 600°C. The thermal decomposition of the metal carboxylate precursor gels has been studied by differential thermal analysis and thermogravimetry. The products derived from calcination of the gels at different temperatures have been characterized by Fourier transform infrared, Roman spectrum and X-ray diffraction. Scanning electron microscopy analysis shows the surface of the films to be smooth, dense and crack-free. Electric properties measurement indicates that the LiNbO3 films demonstrate a ferroelectric hysteresis loop. The remanent polarization (Pr) and coercive field (Ec) are 17.89 μC/cm2 and 35.23 kV/cm, respectively.

scholarly journals Electron microscopy analysis of biofilms produced by Staphylococcus aureus exposed to UV-light on the surface of SnO2 thin films

2021 ◽  
Vol 27 (S1) ◽  
pp. 3168-3170
Author(s):  
Hazel Jaynelle Morales-Rodriguez ◽  
Javier Camarillo-Cisneros ◽  
María Alejandra Favila-Pérez ◽  
Alva Rocío Castillo-González ◽  
Celia María Quiñonez-Flores ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Staphylococcus Aureus ◽  
Uv Light ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis ◽  
Sno2 Thin Films

Effects of sputtering power and pressure on properties of ZnO:Ga thin films prepared by oblique-angle deposition

2011 ◽  
Vol 520 (4) ◽  
pp. 1233-1237 ◽  
Author(s):  
S. Flickyngerová ◽  
M. Netrvalová ◽  
P. Šutta ◽  
I. Novotný ◽  
V. Tvarožek ◽  
...  
Keyword(s):  
Thin Films ◽  
Oblique Angle Deposition ◽  
Oblique Angle ◽  
Sputtering Power ◽  
Angle Deposition

Nanostructure optimization of Zr-W-Ti metallic glass thin films via multitarget co-sputtering with oblique angle deposition approach

2021 ◽  
pp. 161265
Author(s):  
Rattanachai Kowong ◽  
Somyod Denchitcharoen ◽  
Tossaporn Lertvanithphol ◽  
Narit Triamnak ◽  
Chanunthorn Chananonnawathorn ◽  
...  
Keyword(s):  
Thin Films ◽  
Metallic Glass ◽  
Oblique Angle Deposition ◽  
Oblique Angle ◽  
Angle Deposition

Synthesis of Transition-Metal-Oxides Meso-Structured Thin Films

1998 ◽  
Vol 549 ◽  
Author(s):  
H.S. Zhou ◽  
I. Honma
Keyword(s):  
Thin Films ◽  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Self Assembly ◽  
Magnetic Interactions ◽  
X Ray Diffraction ◽  
Structured Materials ◽  
Coating Method ◽  
Diffraction Patterns

AbstractHighly ordered self-assembly organized silica meso-structured architectures have attracted increasing attention because these materials provide a rich source for scientific research and technological applications. This approach to meso-structured materials has been extended to non-silica oxides, especially transition-metal-oxides which might promise applications involving electron transfer or magnetic interactions. We report the syntheses of transition-metal-oxides meso-structured thin films (MSTF), such as TiO2, V2O5, Fe2O3 and Nb2O5, using a surfactant templating processing with spin coating method. X-ray diffraction patterns of the films showed that the films generally oriented in a lamellar structure. The phase transferring in V205 MSTF was also investigated.

Polarization Conversion of Anisotropic SiO2 Columnar Thin Films Prepared by Using Oblique Angle Deposition

2011 ◽  
Vol 58 (4(2)) ◽  
pp. 1026-1030 ◽  
Author(s):  
Yu Zou ◽  
Jin Joo Kim ◽  
Yong Jun Park ◽  
Ji Bum Kim ◽  
Young Deung Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Polarization Conversion ◽  
Oblique Angle Deposition ◽  
Oblique Angle ◽  
Angle Deposition
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