نتایج جستجو برای: metallic thin film

تعداد نتایج: 222332  

Journal: :The Review of scientific instruments 2009
I G Trindade R Fermento D Leitão J B Sousa

In this article, a method to measure the electrical resistivity/conductivity of metallic thin films during layer growth on specific underlayers is described. The in situ monitoring of an underlayer electrical resistance, its change upon the incoming of new material atoms/molecules, and the growth of a new layer are presented. The method is easy to implement and allows obtaining in situ experime...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2007
J-H Guo Amita Gupta Parmanand Sharma K V Rao M A Marcus C L Dong J M O Guillen S M Butorin M Mattesini P A Glans K E Smith C L Chang R Ahuja

The charge state and local ordering of Mn doped into a pulsed laser deposited single-phase thin film of ZnO are investigated by using x-ray absorption spectroscopy at the O K-edge, Mn K-edge and L-edge, and x-ray emission spectroscopy at the O K-edge and Mn L-edge. This film is ferromagnetic at room temperature. EXAFS measurement shows that Mn(2+) replaces the Zn site in tetrahedral symmetry, a...

1999
Peter M. Levy

The electrical resistivity of a pure sample of a thin metallic film is found to depend on the boundary conditions. This conclusion is supported by a freeelectron model calculation and confirmed by an ab initio relativistic KorringaKohn-Rostoker computation. The low-temperature resistivity is found to be zero for a free-standing film (reflecting boundary conditions) but nonzero when the film is ...

Journal: :journal of nanostructures 2014
m. al-kinany gh. a. al-dahash j. al-shahban

we report the growth and characterization of cu nanoparticles thin film of on glass substrate by pulse laser deposition method. the cu thin film prepared with different energy 50, 60, 70, and 80 mj. the energy effect on the morphological, structural and optical properties were studied by afm, xrd and uv-visible spectrophotometer. surface topography studied by atomic force microscopy revealed na...

1997
X. Zhang

Excimer laser ablation of gold films deposited on a quartz crystal microbalance is investigated. The ablation rate is directly obtained from the frequency shift of the microbalance. The measured single-shot ablation rate is found to be at least two orders of magnitude higher than the numerical predictions based on a surface vaporization model. Surface morphologystudies indicate that hydrodynami...

2015
Sergey V. Ketov Xuetao Shi Guoqiang Xie Ryotaro Kumashiro Alexander Yu. Churyumov Andrey I. Bazlov Na Chen Yoshifumi Ishikawa Naoki Asao Hongkai Wu Dmitri V. Louzguine-Luzgin

Zr-Pd metallic glassy thin films with a hierarchical nano-scale structure, produced by magnetron sputtering of the Zr and Pd powder mixture, demonstrate a unique combination of physical and biochemical properties. Thermal stability of the nano-structured glassy samples, their resistance to oxidation in dry air and phase transformation behavior are discussed in the present work. These binary all...

2013
Ian M. Tougas Matin Amani Otto J. Gregory

Temperatures of hot section components in today's gas turbine engines reach as high as 1,500 °C, making in situ monitoring of the severe temperature gradients within the engine rather difficult. Therefore, there is a need to develop instrumentation (i.e., thermocouples and strain gauges) for these turbine engines that can survive these harsh environments. Refractory metal and ceramic thin film ...

Journal: :Physical review letters 2012
Shunhao Xiao Dahai Wei Xiaofeng Jin

The electrical conductance of epitaxial Bi thin films grown on BaF(2)(111) by molecular beam epitaxy has been systematically investigated as a function of both film thickness (4-540 nm) and temperature (5-300 K). Unlike bulk Bi as a prototypical semimetal, the Bi thin films up to 90 nm are found to be insulating in the interior but metallic on the surface. This finding not only has unambiguousl...

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