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The thermal conductivity (k) of polycrystalline silicon carbide thin films is relevant for thermal management in emerging silicon carbide applications like MEMS and optoelectronic devices. In such films k can be substantially reduced by…

Materials Science · Physics 2023-06-09 Lei Tang , Chris Dames

Copper ferrite thin films were rf sputtered at a power of 50W. The as deposited films were annealed in air at 800{\deg}C and slow cooled. The transmission electron microscope (TEM) studies were carried out on as deposited as well as on slow…

Materials Science · Physics 2010-12-30 P. D. Kulkarni , S. Prasad , I. Samajdar , N. Venkataramani , R. Krishnan

In the construction of a space radio telescope, it is essential to use materials with a low noise factor and high mechanical robustness for the antenna surface. We present the results of measurements of the reflection performance of two…

Instrumentation and Methods for Astrophysics · Physics 2015-05-27 Kazuhisa Kamegai , Masato Tsuboi , Akihiro Doi , Eiichi Sato

Au and Ag are known to be metallic and none of them have shown independently superconductivity. Here we show superconductivity in Ag implanted Au thin films. Ag implanted Au films of different thicknesses have been studied using four probe…

Materials such as W, TiN, and SrRuO3 (SRO) have been suggested as promising alternatives to Au and Ag in plasmonic applications owing to their refractory properties. However, investigation of the reproducibility of the optical properties…

YBCO films were successfully prepared on biaxially textured Ag{110}<211> substrates by using pulsed laser deposition. X-ray diffraction results showed that the degree of preferential orientation of Ag{110}<211> substrates varied with…

Materials Science · Physics 2009-10-31 Rongping Wang , Yueliang Zhou , Shaohua Pan , Meng He , Zhenghao Chen , Guozhen Yang

Next-generation gravitational wave observatories are expected to use cryogenically cooled, pendulum-suspended 200 kg test mass mirrors from a crystalline material such as crystalline silicon. During operation of the observatories, these…

Annealing Mg-implanted homoepitaxial GaN at temperatures at or above 1400 {\deg}C eliminates the formation of inversion domains and leads to improved dopant activation efficiency. Extended defects in the form of inversion domains contain…

The chemical deposition of high-performance Zinc Oxide (ZnO) thin films is challenging, thus significant efforts have been devoted during the past decades to develop cost-effective, scalable fabrication methods in gas phase. This work…

Advanced laser interferometer gravitational-wave detectors use high laser power to achieve design sensitivity. A small part of this power is absorbed in the interferometer cavity mirrors where it creates thermal lenses, causing aberrations…

Instrumentation and Methods for Astrophysics · Physics 2020-07-08 Joshua Ramette , Marie Kasprzack , Aidan Brooks , Carl Blair , Haoyu Wang , Matthew Heintze

Thin films of magnesium doped zinc oxide (MZO) were synthesized using the sol gel method and annealed at different temperatures under ambient condition. The morphological properties of the post annealed MZO films were investigated using X…

Materials Science · Physics 2019-09-09 Joydip Sengupta , Arifeen Ahmed , Rini Labar

Fabrication of perpendicularly magnetized ferromagnetic films on various buffer layers, especially on numerous newly discovered spin-orbit torque (SOT) materials to construct energy-efficient spin-orbitronic devices, is a long-standing…

Mesoscale and Nanoscale Physics · Physics 2022-10-05 Kaihua Lou , Tunan Xie , Qianwen Zhao , Baiqing Jiang , ChaoChao Xia , Hanying Zhang , Zhihong Yao , Chong Bi

The puzzling experimental observations of Ag addimer formation on the Si(100) surface upon vapor deposition at low temperature, even as low as 140 K, reported by Huang et al. [Phys. Chem. Chem. Phys. 2021, 23, 4161], is explained by facile…

Materials Science · Physics 2025-06-11 Alejandro Peña-Torres , Michail Stamatakis , Hannes Jónsson

Improvement of tool reliability and uptime is a current focus in development of extreme ultraviolet lithography. The lifetime of collection mirrors for extreme ultraviolet light in tin-based plasma light sources is limited considerably by…

Applied Physics · Physics 2020-10-28 Norbert Böwering , Christian Meier

The mirrors installed on Imaging Atmospheric Cherenkov Telescopes like the MAGIC telescopes in La Palma, Canary Islands, are constantly exposed to the harsh environment. They have to withstand wind-induced corrosion from dust and sand,…

Instrumentation and Methods for Astrophysics · Physics 2019-09-10 Martin Will , Juliane van Scherpenberg , Razmik Mirzoyan , Markus Garczarczyk

We present high-reflectivity substrate-transferred single-crystal GaAs/AlGaAs interference coatings at a center wavelength of 4.54 um with record-low excess optical loss below 10 parts per million. These high-performance mirrors are…

We study the optical and electrical properties of silver films with a graded thickness obtained through metallic evaporation in vacuum on a tilted substrate to evaluate their use as semitransparent electrical contacts. We measure their…

In this paper Al doped ZnO (AZO) thin films with 0, 3, 6 and 12 at. % Al concentration were prepared by sol-gel method on glass substrates. The deposited films were annealed at different temperatures of 300, 350, 400, 450 and 500 {\deg}C…

Mesoscale and Nanoscale Physics · Physics 2014-12-30 F. Eskandari , M. Ranjbar , P. Kameli , H. Salamati

We have measured the low temperature electrical resistivity of Ag : Mn mesoscopic spin glasses prepared by ion implantation with a concentration of 700 ppm. As expected, we observe a clear maximum in the resistivity (T ) at a temperature in…

The Si based TiO2 thin films were prepared via the combination both of Sol-Gel and Spin-Coating method. The films were sintered at 850 degrees Celsius for half an hour, and the resulting films were characterized by X-ray diffraction (XRD)…

Materials Science · Physics 2024-11-08 Xiechao Hu , Chengxi Hu , Tieyan Guo , Zhi Yao , Yang Yang , Ze Qing Guo , Amanda Ekeminiabasi Williams