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the Li-ion diffusion kinetics. According to first-principles calculations, Na doping can tune the band structure of Li2TiSiO5 from indirect to direct band, leading to improved electronic conductivity......
利用第一性原理对Au-Pd合金颜色的计算于万里1,郁建元2,田立倩1,尹蓉3(1.河北省秦皇岛市燕山大学材料科学与工程学院2.唐山学院 环境与化学工程系3.广东省珠宝玉石及贵金属检测中心)摘 要:利用第一性原理计算了Au-Pd合金的颜色.构建了不同配比Au-Pd的晶体结构模型,采用BFGS算法对模型进行了结构优化.使用Materials Studio软件的CASTEP模块,计算了模型的反射率.利用CIELab色度空间参数,表征了Au-Pd合金的色度学参数L*,a*,b*,C*和h*.利用多项式对不同配比Au-P......
of Materials Science and Technology, Guangxi University, Nanning 530004, China;4. College of Physics Science and Technology, Guangxi University, Nanning 530004, China)Abstract:First-principles calculations......
子结构 中图分类号: TG146.2 文献标识码: A First-principles calculation of dehydrogenating properties of MgH2-Ti systems ZHOU Dian-wu, PENG Ping, LIU Jin-shui (School of Materials Science and Engineering, Hunan University, Changsha 410082, China) Abstract: Using a first-principles plane-wave pseudopotential method, the energetics and electronic structure of (MgTi)H2 formed by titanium dissolving......
was by using first-principles density functional theory(DFT) calculation. The band gap widths of RE doped rutile TiO2 were important factors for altering their absorbing wavelengths. The results show that RE......
Carbon interstitial defects causing emission red shift in YAG:Ce phosphor:First-principles calculationYaling Zheng1,2,Weidong Zhuang1,Xianran Xing2,Ronghui Liu1,Yanfeng Li1,Yuanhong Liu1,Yunsheng... photolumincent properties.Here,through first-principles calculation,the effect of carbon interstitial defects on Y3 Al5 O12:Ce3+phosphor was investigated. It is found that the carbon interstitials tend to occupy......
and Technology摘 要:The structural and electronic properties of bastnaesite were studied by using the first-principles method based on the density functional theory(DFT).The geometry structure of bastnaesite was first optimized,and then the Mulliken populations,electron density and density of states were calculated and further analyzed in detail.The calculation......
Electronic structures of new tunnel barrier spinel MgAl2O4:first-principles calculationsZHANG Delin a , XU Xiaoguang a , WANG Wei b , ZHANG Xin a , YANG Hailing a , WU Yong a , MA Chuze a , and JIANG... using first-principles density functional theory calculations. Our results show that similar electronic structures are found for the MgAl 2 O 4 and MgO tunneling barriers. The calculated direct......
="ChDivSummary">Based on the first-principles plane wave pseudo-potential method, the electronic structure and electrochemical performance of LixSn4Sb4 (x=2, 4, 6, and 8) and LixSn12-xSb4 (x=9, 10, 11, and 12... cell due to the low lithium intercalation formation energy. It is found that lithium atoms first occupy the interstitial sites, and then Sn atoms at the lattice positions are replaced by excessive......
of the samples were investigated on the degradation of methyl orange (MO).The effect of the dopants on the electronic structure of TiO2 was studied by the first-principles calculations based on the density......