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In this work, we studied cobalt nitride (Co-N) thin films deposited using a dc magnetron sputtering method at a substrate temperature (\Ts) of 523\,K. We find that independent of the reactive gas flow (\pn) used during sputtering, the…

Materials Science · Physics 2017-02-15 Nidhi Pandey , Mukul Gupta , Rachana Gupta , Sujay Chakravarty , Neeraj Shukla , Anton Devishvili

We report on the temperature dependence of the anharmonic decay rate of zone-center (G mode) optical phonons in both single-walled carbon nanotubes and graphite. The measurements are performed using a pump-probe Raman scattering scheme with…

Materials Science · Physics 2011-06-09 Ioannis Chatzakis , Hugen Yan , Daohua Song , Stéphane Berciaud , Tony F. Heinz

Filament-based chemical vapor deposition (CVD) for silicon (Si) coatings is often treated as a straightforward adaptation of planar deposition, just with a cylindrical substrate. But this overlooks a fundamental shift in how transport…

A Hybrid Physical-Chemical Vapour Deposition (HPCVD) system consisting of separately controlled Mg-source heater and substrate heater is used to grow MgB2 thin films and thick films at various temperatures. We are able to grow…

Superconductivity · Physics 2011-12-20 K. Chen , M. Veldhorst , C. H. Lee , D. R. Lamborn , R. DeFrain , J. M. Redwing , Q. Li , X. X. Li

Micron-thick boron films have been deposited by Pulsed Laser Deposition in vacuum on several substrates at room temperature. The use of high energy pulses (>700 mJ) results in the deposition of smooth coatings with low oxygen uptake even at…

We present a study of the synthesis of epitaxial V$_2$O$_3$ films on $c$-plane Al$_2$O$_3$ substrates by reactive dc-magnetron sputtering. The results reveal a temperature window, at substantially lower values than previously reported,…

Materials Science · Physics 2018-05-03 Einar B. Thorsteinsson , Seyedmohammad Shayestehaminzadeh , Unnar B. Arnalds

Laser-assisted chemical vapour deposition (CVD) growth is an attractive mask-less process for growing locally aligned carbon nanotubes (CNTs) in selected places on temperature sensitive substrates. The nature of the localized process…

Chemical Physics · Physics 2017-09-13 Yoeri van de Burgt , Yves Bellouard , Rajesh Mandamparambil

High quality vanadium sesquioxide V2O3 films (170-1100 {\AA}) were grown using the pulsed laser deposition technique on (0001)-oriented sapphire substrates, and the effects of film thickness on the lattice strain and electronic properties…

Strongly Correlated Electrons · Physics 2008-01-07 C. Grygiel , Ch. Simon , B. Mercey , W. Prellier , P. Limelette , R. Fresard

We report a novel method for depositing patterned dielectric layers with sub-micron features using atomic layer deposition (ALD). The patterned films are superior to sputtered or evaporated films in continuity, smoothness, conformality, and…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. J. Biercuk , D. J. Monsma , C. M. Marcus , J. S. Becker , R. G. Gordon

We report a comprehensive Raman study of the phonon behaviour in PdSe$_2$ in the temperature range of 5 K to 300 K. A remarkable change in the Raman spectrum is observed at 120 K: a significant enhancement of the out-of-plane phonon…

V$_3$Si thin films are known to be superconducting with transition temperatures up to 15 K, depending on the annealing temperature and the properties of the substrate underneath. Here we investigate the film structural properties with the…

Growing large-area single-crystal monolayers is the holy grail of graphene synthesis. In this work, the efficiency of graphene growth and the quality of their continuous films are explored through the time evolution of individual domains…

Materials Science · Physics 2018-03-26 Wanzhen He , Dechao Geng , Zhiping Xu

The growth of two-dimensional (2D) transition metal dichalcogenides using chemical vapor deposition has been an area of intense study, primarily due to the scalability requirements for potential device applications. One of the major…

Statistical Mechanics · Physics 2024-11-04 Gagan Kumar , Annwesha Adhikari , Anupam Roy , Sourabh Lahiri

We report high room-temperature mobility in single layer graphene grown by Chemical Vapor Deposition (CVD) after wet transfer on SiO$_2$ and hexagonal boron nitride (hBN) encapsulation. By removing contaminations trapped at the interfaces…

Remarkably big increase of the substrate temperature during the low-temperature MBE growth of GaMnAs layers is observed by means of band gap spectroscopy. It is explained and simulated in terms of changes in the absorption/emission…

Materials Science · Physics 2009-11-13 V. Novak , K. Olejnik , M. Cukr , L. Smrcka , Z. Remes , J. Oswald

The temperature dependence of conductivity of partially dehydrochlorinated PVC films, containing in their macromolecules chains of polyene-conjugated bonds (PCB) and representing copolymer PVC-Polyacetylene. In samples with excess of some…

Soft Condensed Matter · Physics 2013-12-30 D. V. Vlasov , V. I. Kryshtob , T. V. Vlasova , L. A. Apresyan , S. I. Rasmagin

We investigate the effect of annealing temperature on the crystalline structure and physical properties of tantalum-pentoxide films grown by radio frequency magnetron sputtering. For this purpose, several tantalum films were deposited and…

Amorphous carbon (a-C) formed under energetic atom deposition and by cooling of a melt by MD simulations in a wide $P,T$-range is investigated. Simulations of a-C formation with atomic beam deposition reveal a sharp GLC-to-DLC transition…

Condensed Matter · Physics 2007-05-23 A. Bakai , Yu. Turkin , M. Fateev

The deformation of monolayer graphene, produced by chemical vapor deposition (CVD), on a polyester film substrate has been investigated through the use of Raman spectroscopy. It has been found that the microstructure of the CVD graphene…

Thermal decomposition of silicon carbide is a promising approach for the fabrication of graphene. However, the atomistic growth mechanism of graphene remains unclear. This paper describes the development of a new charge-transfer interatomic…

Materials Science · Physics 2018-03-13 So Takamoto , Takahiro Yamasaki , Jun Nara , Takahisa Ohno , Chioko Kaneta , Asuka Hatano , Satoshi Izumi
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