scholarly journals Surface structures of In-Pd intermetallic compounds. I. Experimental study of In thin films on Pd(111) and alloy formation

2014 ◽  
Vol 141 (8) ◽  
pp. 084702 ◽  
Author(s):  
G. M. McGuirk ◽  
J. Ledieu ◽  
É. Gaudry ◽  
M.-C. de Weerd ◽  
V. Fournée
Author(s):  
D.C. Dufner

The general goal of this research is to clarify mechanisms of solid state reactions at the atomic level as a step in the rationalization of macroscopic reaction behavior in solids. A study of intermetallic alloy formation resulting from interdiffusion of metals in thin films can be made by HREM. In this work, reactions between Pt and Sn in thin films are studied to elucidate mechanisms for structural and compositional changes during the interdiffusion process.Thin films of Pt and Sn used in this study were prepared by the two-film method introduced by Shiojiri. Few hundred angstroms of Pt were vacuum-deposited onto holey carbon films mounted on TEM grids. Sn films with an average thickness of 200Å were created by evaporation at rates of 15-30 Å/sec onto air-cleaved KBr substrates. The Sn films were wet-stripped and collected on the holey Pt grids. Figure 1 shows a cross-section schematic of a Pt-Sn couple. While this two-film arrangement did not allow observations of the actual reaction interface, microtomy was used to produce cross-sections.


1972 ◽  
Vol 5 (1) ◽  
pp. 57-61 ◽  
Author(s):  
B. V. Zheleznyi ◽  
Z. M. Zorin ◽  
W. D. Sobolev ◽  
N. V. Churaev

1977 ◽  
Vol 8 (41) ◽  
pp. no-no
Author(s):  
J. D. PISTRE ◽  
J. SALARDENNE ◽  
P. SMUTEK

2021 ◽  
Vol 2086 (1) ◽  
pp. 012170
Author(s):  
Irina G Bessonova ◽  
Pavel I Trofimov ◽  
Petr I Lazarenko ◽  
Demid A Kirilenko ◽  
Nikolay A Bert ◽  
...  

Abstract Planar photonic structures, such as gratings and metasurfaces, are routinely used for beam steering, waveguide coupling, and light localization. However, conventional fabrication techniques that involve lithography are demanding in terms of time and cost. Much cheaper and simpler methods for surface patterning and formation of periodic surface structures are enabled by direct laser processing. Here, we demonstrate low-cost rapid fabrication of high-quality phase gratings based on the formation of laser induced periodic surface structures (LIPSS, or ripples) in Ge2Sb2Te5 (GST) thin films. Due to unique phase change properties of GST, the structures demonstrate strong modulation of refractive index with period controlled by the wavelength of laser irradiation. We study the formation of phase change LIPSS in a broad range of excitation wavelengths and observe transition between regimes with different orientations of generated ripples with respect to laser polarization.


2015 ◽  
Vol 55 (3-4) ◽  
pp. 538-546 ◽  
Author(s):  
Atif Alkhazaili ◽  
Mohammad M. Hamasha ◽  
Gihoon Choi ◽  
Susan Lu ◽  
Charles R. Westgate

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