Project supported by Shandong Province Natural Science Foundation,China(Grant No.ZR2017MF018);the National Natural Science Foundation of China(Grant No.61675223)
Three samples of GaAs/A1As multiple-quantum wells with different quantum well widths and tS-doped with Be ac- ceptors at the well center were grown on (100) GaAs substrates by molecular beam epitaxy. Polarized Raman...
Materials with large non-linear optical properties are good candidates for applications in the fields of telecommunications, solar energy conversion, laser treatment and so on. In the present study, a crystal of Ammon...
Supported by the National Basic Research Program under Grant Nos 2012CB821402 and 2015CB921401;the National Natural Science Foundation of China;the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning;STCSM of China(No 15XD1500200)
We perform systematic thermal conductivity measurements on heavily hole-doped Ba1-xKxFe2As2 single crystals with 0.747 ≤ x ≤ 0.974. At x=0.747, the K0/T is negligible, indicating a nodeless superconducting gap. A sm...
The electronic and magnetic properties of Ce doped SrMnO3 have been investigated us- ing the pseudo-potential plane wave method within the generalized gradient approximation method by first principles. The different M...
Supported by Fujian High-tech Project Foundation (No 2004H008)
In this paper,La(3)-doped Nano-TiO2(La(3)-TiO2) was synthesized via hydrothermal process.Structure and optical properties of the synthesized samples were characterized via XRD,FT-IR,DRS,etc.The results showed th...
supported by the National Natural Science Foundation of China (10874087,10874088)
Nanocrystalline titania as photocatalyst has attracted considerable attention for its potential use in environmental cleaning.Recently,lanthanide ions doped titania samples have been shown to increase the photocatalyt...
supported by the National Natural Science Foundation of China (10774012,10434030);Beijing Jiaotong University Program (2007XM048,2006XM038)
The upconversion emission spectra of Er^3+ doped oxyfluoride tellurite glasses excited by 808 nm laser diode (LD) were measured. The dependence of 550 nm upconversion emission on the excitation intensity was analyz...
Five types of rare earth/alkaline earth oxide-doped CeO2 superfine-powders were synthesized by a low-temperature combustion technique. The relevant solid electrolyte materials were also sintered by pressureless sinter...
Project supported by the National Natural Science Foundation of China (50571001);the National "863"Project(2006AA03Z524)
Scandia and rhenium doped tungsten powders were prepared by solid-liquid doping combined with two-step reduction method. The particle size of doped tungsten and distribution of scandia and rhenium were studied by SEM,...
Barium strontium titanate/magnesia (BSTO/MgO) ferroeleetric materials for phase shift were prepared by traditional ceramic process-solid phase synthesis. The effects of various rare earth oxides of 0.5 % on dielectr...