搜索结果: 1-15 共查到“理学 doping”相关记录34条 . 查询时间(0.046 秒)
Beware doping athletes!This sensor may be your downfall（图）
doping athletes sensor your downfall
2017/9/1
Scientists searching for traces of drugs, bomb-making components and other chemicals often shine light on the materials they’re analyzing.This approach is known as spectroscopy, and it involves studyi...
Optimal doping profiles via geometric programming
Doping profile bipolar junction transistor geometrical plan convex optimization breakdown voltage and semiconductors
2015/8/10
We first consider the problem of determining the doping profile that minimizes base transit time in a (homojunction) bipolar junction transistor. We show that this problem can be formulated as a geome...
The effects of Co-Ti co-doping on the magnetic,electrical,and magnetodielectric behaviors of M-type barium hexaferrites
materials science barium coercive force doped materials electrical properties ferrites ferroelectric materials magnetic fields magnetic properties magnetization
2016/12/2
Magnetic, electrical and magnetodielectric properties have been studied in Co-Ti co-doped M-type hexaferrite BaCo x Ti x Fe12-2x O19 (x = 0 65 4). With the incorporation of Co-Ti, both their ferromagn...
^{75}As NMR study of the growth of paramagnetic-metal domains due to electron doping near the superconducting phase in LaFeAsO_{1-x}F_{x}
paramagnetic-metal domains electron doping superconducting phase LaFeAsO_{1-x}F_{x}
2012/2/27
We studied the electric and magnetic behavior near the phase boundary between antiferromagnetic (AF) and superconducting (SC) phases for a prototype of high-T_c pnictides LaFeAsO_{1-x}F_{x} by using n...
Doping effects in AlGaAs lasers with separate confinement heterostructures (SCH). Modeling optical and electrical characteristics with Sentaurus TCAD
Modeling optical and electrical AlGaAs lasers
2011/9/1
Optical and electrical characteristics of AlGaAs lasers with sep-arate confinement heterostructures are modeled by using Synopsys’s Sentaurus TCAD and open source software for semi-automatic data anal...
Engineering the magnetic properties of the Mn$_{13}$ cluster by doping
Engineering the magnetic properties Mn
2011/9/9
With a goal to produce giant magnetic moment in Mn13 cluster which will be useful for practical applications, we have considered the structure and magnetic properties of pure Mn13 cluster and substitu...
Bond-specific reaction kinetics during the oxidation of (111) Si: Effect of n-type doping
Bond-specific reaction kinetics oxidation of (111) Si Effect of n-type doping
2010/11/24
It is known that a higher concentration of free carriers leads to a higher oxide growth rate in the thermal oxidation of silicon. However, the role of electrons and holes in oxidation chemistry is not...
Failure of t-J models in describing doping evolution of spectral weight in x-ray scattering, optical and photoemission spectra of the cuprates
t-J models x-ray scattering optical and photoemission spectra cuprates
2010/11/19
We have analyzed experimental evidence for an anomalous transfer of spectral weight from high
to low energy scales in both electron and hole doped cuprates as a function of doping. X-ray
scattering,...
Atmospheric Oxygen Binding and Hole Doping in Deformed Graphene on a SiO2 Substrate
graphene Raman spectroscopy scanning tunneling microscopy (STM)
2010/11/22
Using micro-Raman spectroscopy and scanning tunneling microscopy, we study the relationship between structural distortion and electrical hole doping of graphene on a silicon dioxide substrate. The obs...
Doping and temperature dependence of Mn 3d states in A-site ordered manganites
Doping temperature dependence A-site ordered manganites
2010/11/19
We present a systematic study of the electronic structure in A-site ordered manganites as function of doping and temperature. The energy dependencies observed with soft x-ray resonant diffraction (SXR...
First Principles Calculation of Field Emission from Carbon Nanotubes With Nitrogen and Boron Doping
First Principles Calculation Field Emission Carbon Nanotubes Nitrogen Boron Doping
2010/11/24
We investigate the eld emission properties of nitrogenated and boronated carbon nanotubes using time-dependent density functional theory, were the wave function propagation is performed using the Cra...
Enhancing the electron mobility via delta-doping in SrTiO3
electron mobility delta-doping in SrTiO3
2010/11/17
We fabricated high-mobility δ-doped structures in SrTiO3 thin films in order to investigate the low temperature electronic transport properties of confined carriers in this system. An enhancement of t...
Modulation of the thermodynamic, kinetic and magnetic properties of the hydrogen monomer on graphene by charge doping
Modulation of the thermodynamic kinetic magnetic properties graphene by charge doping
2010/11/23
The thermodynamic, kinetic and magnetic properties of the hydrogen monomer on doped graphene layers were studied by ab initio simulations. Electron doping was found to heighten the diffusion potential...
Synthesis of ErFeAsO-based superconductors by hydrogen doping method
Synthesis ErFeAsO-based superconductors hydrogen doping method
2010/11/25
Here we demonstrate the technique to stabilize the ErFeAsO-based superconductor with the smallest lattice constants in LnFeAsO1-y (Ln = lanthanide) series using hydrogen doping method. Polycrystalline...
Critical-doping universality for cuprate superconductors: Oxygen nuclear-magnetic-resonance investigation of Ca(x)La(1-x)Ba(1.75-x)La(0.25+x)Cu(3)O(y)
cuprate superconductors Oxygen nuclear-magnetic-resonance investigation
2010/11/18
The critical doping levels in cuprates, where the ground state changes its nature (from an an-
tiferromagnet to a spin glass to superconductor to metal), are not universal. We investigate the origin ...