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Cu2SnSe3 (CTSe) thin films were fabricated by coevaporation on soda-tune glass substrates at the substrate temperature of 300 °C under rations Co Sd supply ratios. From X-ray diffraction ( XRD) analyses, diffraction peaks of CTSe with a cubic sphalerite structure were observed in all CTSe thin films. In addition, SnSe and SnSe2 phases were also detected in Sn-ricb CTSe thin films. On the other bands,...
Molecular dynamics simulations are carried out to study the thermal and mechanical phenomena of heat conduction induced by ultrafast laser heating of nanoscale Si films. A distribution of internal heat source obeying Beer–Lambda law is applied to model the laser energy deposition in the film and to calculate the induced temperature and stress distributions. Thermal waves are observed from the local...
To investigate temperature-dependent ferroelectric and dielectric properties of ferroelectric films, Bi 3.25 La 0.75 Ti 3 O 12 (BLT) thin films were prepared on Pt-coated silicon substrates by pulsed laser deposition. The ferroelectric and dielectric behaviors have been studied in a wide temperature range from 80K to room temperature. The saturated polarization (P ...
Carbon nanotubes (CNTs) films were synthesized at low pressure using nickel as catalyst by thermal chemical vapor deposition with hydrogen-acetylene mixture. The Raman characteristics and morphological features of CNTs at different substrate temperatures were investigated. The variation of CNTs morphological feature mainly depends on the substrate temperatures. In the low temperature range (450-550degC),...
Internal stress simulation of a multilayer structure using measured wafer curvature accurately predicts the central wavelength shifts and spectrum ripple resulting from grinding and temperature change, thereby greatly improving the production yield of 50 GHz filters.
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