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rigid band
相关语句
  刚性带
     The electronic structures of MC compounds (M=3d transition metal) in NaCl, CsCl and WC phases have been investigated by using the first principle method. The calculated results indicate that, the band structures of the MC compounds in the same phase are similar, and as a result of the rigid band model, we obtained the uniform distribution of the density of states (DOS) for MC compounds in three phases.
     采用第一性原理方法对具有NaCl相、CsCl相以及WC相结构的 3d过渡金属碳化物MC (M =Sc~Ni)的电子结构进行了详细研究 ,研究结果表明 ,对于同一类型相结构的MC化合物具有相似的能带结构 ,均可用刚性带模型来描述 ,并由此得到了三种相统一的态密度 (DOS)分布 .
短句来源
     Results of band structure calculation show that the band structures of transition metal (001) surfaces can be well described by the rigid band model.
     能带计算结果表明 ,过渡金属碳化物(0 0 1)面的能带结构符合刚性带理论模型 .
短句来源
  刚带
     The numberof electrons transferred from each Zr atom to 3d energy band of Co calculatedby the rigid band model is about 2.27.
     根据刚带模型计算出每个Zr原子向Co的3d能带转移的电荷数约为2.27。
短句来源
     Respectively we discussed (1) and (2) by exchange-role theory of located electron-mode and rigid band theory of itinerant electron mode.
     和μ_(mzx)随压力增加都有未见报导过的微弱升高。 分别结合局域电子模型的交换作用理论和巡游电子模型的刚带理论进行了讨论。
短句来源
  “rigid band”译为未确定词的双语例句
     It is found that there is Fe 3d, 4s-B 2p hyb(?) rd bonding in Fe-B. As opposed to the "rigid band charge transfer" model, calculations in the present work indicate that charges transfer from Fe 4s to B and Fe 3d, which leads to the reduction of magnetic moment of atom Fe.
     结果表明:Fe4s、3d与B2p发生杂化键合,Fe的4s电子既向B原子转移又向自身3d转移,使Fe原子磁性下降.
短句来源
     The evolution of the Ga3d and As3d spectra shows that strong interactions occur between Cuand GaAs substrate during the interface formation. For less than 0.5 monolayer (ML) Cuonly rigid band bending was observed,but no interfacial reaction could be appreciated;
     Ga3d和As3d光电子谱随Cu的厚度的变化表明:在小于0.5单原子层(ML)Cu时只观察到能带的刚性弯曲,并无明显的界面反应;
短句来源
     The analysis of Auger spectra of Cu, Ni and Cu-Ni alloy also shows that the "Rigid Band Model" is not suitable for Cu-Ni system.
     从铜-镍合金的俄歇谱分析可知,合金能带的刚性能带理论并不适合本研究系统。
短句来源
     In the research on amorphous alloy, there are arguments against the "rigid band charge transfer" model assuming charge transfer from the metalloid atoms to the transition metal atoms, but they can not explain the experimental evidence of the reduction of magnetic moment of the transition metal atoms.
     非晶态合金研究中有关能带是否刚性及电荷转移方向问题存在争议. “刚性能带电荷转移”模型认为非晶态合金的能带结构不随类金属原子浓度而变,电荷直接由类金属原子向过渡金属原子转移。
短句来源
  相似匹配句对
     Band of Brothers
     兄弟连
短句来源
     ON PERMUTABLE BAND
     关于同余交换的带
短句来源
     NODAL SCHEME ALGORITHM OF MINIMUM BAND WIDTH OF RIGID MATRIX AND ITS APPLICATION
     使刚度矩阵带宽最小的节点标号算法、程序及应用
短句来源
     On Generalized Rigid Rings
     广义 Rigid环(英文)
短句来源
     ②rigid fixation;
     ②固定牢固;
短句来源
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  rigid band
Thanks to the presence of this rigid band of capsule wall tissue, the shape of the sporangium gradually changes from a sphere to a cylinder whose perfectly shaped distal mantle edge, naturally, coincides with the zone of resistance.
      
An attempt was made to partition the thermodynamic properties of the α-phase alloys into magnetic, vibrational, and electronic contributions, and a model based on the rigid band approximation was applied to the excess free energy of zinc.
      
The results were used to evaluate an equation derived previously from the rigid band model, giving the composition dependence of the activity coefficient of solutes in terminal solutions to which the Hume-Rothery e/a correlations apply.
      
The nature of the change in the separate FS sections as the alloy composition changes is examined within the framework of the rigid band model, and a qualitative explanation is obtained for the concentration dependence of Rs and S in Fe-Co alloys.
      
It is shown that the change in the electronic structure of the starting molybdenum tetrasulfide to four lithium atoms per formula unit in the intercalate may be considered in the rigid band model.
      
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The study of electronic structure for amorphous alloys Ni-P and Pd-Ni-P wasmade by X-ray photoemission,Auger electron spectroscopy and quantum chemicalcalculation.It was shown that the s and p orbitals on the P atom combinedwith the s and d orbitals of Ni and Pd atoms to form bonding molecular orbit-als(MO).This leads a drop of the den sity ofstates near the Fermi level.Thechanges of band structure are obvious.The“rigid band-charge transfer model”which was used to explain the variation of magnetic and...

The study of electronic structure for amorphous alloys Ni-P and Pd-Ni-P wasmade by X-ray photoemission,Auger electron spectroscopy and quantum chemicalcalculation.It was shown that the s and p orbitals on the P atom combinedwith the s and d orbitals of Ni and Pd atoms to form bonding molecular orbit-als(MO).This leads a drop of the den sity ofstates near the Fermi level.Thechanges of band structure are obvious.The“rigid band-charge transfer model”which was used to explain the variation of magnetic and nuclear magnetic prop-erties of amorphous alloys such as Ni-P and Pd-Ni-P seems to be unreliable.

用光电子能谱、Auger电子能谱实验和量子化学计算研究了Ni-P和Pd-Ni-P非晶态合金的电子结构。结果表明:磷的s,p电子和Ni,Pd的s,d电子成键,Fermi面处的态密度下降,能带结构明显变化。因此,用刚性能带-电荷迁移模型对Ni-P和Pd-Ni-P等非晶态合金的磁性及核磁性质所作的解释是不合乎实际情况的。

Crystallographic structures and intrinsic magnetic properties of Nd_2(Fe_(1-x)Co_x)_(14)B and Y_2(Fe_(1-x)Co_x)_(14)B have been studied by magnetic measurements and X-ray diffraction. Thermomagnetic analysis and X-ray diffraction show the presence of tetragonal phase. Lattice constants decrease with increasing the content of Co. X-ray diffraciton on magnetically aligned powders indicate that the c-axis is the easy magnetization direction for all samples studied. Effect of Co on anisotropy at different temperatures...

Crystallographic structures and intrinsic magnetic properties of Nd_2(Fe_(1-x)Co_x)_(14)B and Y_2(Fe_(1-x)Co_x)_(14)B have been studied by magnetic measurements and X-ray diffraction. Thermomagnetic analysis and X-ray diffraction show the presence of tetragonal phase. Lattice constants decrease with increasing the content of Co. X-ray diffraciton on magnetically aligned powders indicate that the c-axis is the easy magnetization direction for all samples studied. Effect of Co on anisotropy at different temperatures in Y_2(Fe_(1-x)Co_x)_(14)B has been studied. The monotonic decrease of anisotropy is observed only at room temperature. Anisotropy increases and reaches a maximum at about x=0.4 and 0.2 for T=1.5K and 150K respectively. This behavior can be explained by the site preference of Co atoms. Study of the composition dependence of the spin reorientation temperature indicates that the Co. content has no great effect on it for x≤0.8 in Nd_2(Fe_(1-x)Co_x)_(14)B. When x>0.8, spin reorientation temperature drops sharply. Saturation magnetization has a maximum value at about x=0.1 at 1.5K. The effect of Co on saturation magnetization is similar to that in Fe_(1-x)Co_x binary system(Slater-Pauling curve), It can be explained by the rigid band model. The substitution of Co for Fe significantly enhances the Curie temperature. The effect of Co on the Curie temperature is almost the same for both Nd_2(Fe_(1-x)Co_x)_(14)B and Y_2(Fe_(1-x)Co_x)_(14)B, indicating that the Curie temperature is essentially determined by the exchange interaction of 3d transition metal atoms.

用磁测量和X-射线衍射研究了Nd_2(Fe_(1-x)Cox)_(14)B和Y_2(Fe_(1-x)Cox)_(14)B的晶格结构和内禀磁性。结果表明,低温下当钴含量较少时,Y_2(Fe_(1x)Cox)_(14)B的磁晶格向异性随钴含量的增加而增加,在1.5K和150K温度下,分别在x为0.4和0.2左右时磁晶各向异性常数达到极大;室温时的磁晶各向异性常数却随钴含量的增加而单调下降。用钴代换铁,对Nd_2(Fe_(1-x)Cox)_(14)B的自旋再取向温度的影响是复杂的。1.5K的饱和磁化强度在x=0.1左右达到极大。钴可以显著提高居里温度,对于Nd_2(Fe_(1-x)Cox)_(14)B和Y_2(Fe_(1-x)Cox)_(14)B,钴的作用几乎相同,表明居里温度主要由3d过渡金属原子之间的交换作用决定。

The Cu-GaAs (110) interface and Schottky barrier formation have been studied with syn-chrotron radiation photoemission spectroscopy for Cu overlayers deposited at room temperature.The evolution of the Ga3d and As3d spectra shows that strong interactions occur between Cuand GaAs substrate during the interface formation.For less than 0.5 monolayer (ML) Cuonly rigid band bending was observed,but no interfacial reaction could be appreciated; for Cumore than 1 ML apparent interfacial reaction appeared,by which...

The Cu-GaAs (110) interface and Schottky barrier formation have been studied with syn-chrotron radiation photoemission spectroscopy for Cu overlayers deposited at room temperature.The evolution of the Ga3d and As3d spectra shows that strong interactions occur between Cuand GaAs substrate during the interface formation.For less than 0.5 monolayer (ML) Cuonly rigid band bending was observed,but no interfacial reaction could be appreciated; for Cumore than 1 ML apparent interfacial reaction appeared,by which metallic Ga formed at theinterface,and some As segregated on the metal; there were evidences of clustering or islandgrowth of the Cu overlayers observed.Using deconvolution technique it has been found thatthe interfacial Fermi level lies at about 0.9 eV below the conduction band maximum.The me-chanism of the Cu-GaAs (110) interface and Schottky barrier formation is discussed.

本文用同步辐射光电子谱研究了在室温n型GaAs(110)解理面上蒸发淀积的Cu-GaAs(110)界面和肖特基势垒的形成.Ga3d和As3d光电子谱随Cu的厚度的变化表明:在小于0.5单原子层(ML)Cu时只观察到能带的刚性弯曲,并无明显的界面反应;在大于1MLCu时出现明显的界面反应,形成处于界面的金属Ga和处于Cu表面的As;Cu有岛状生长的迹象.由谱分解的结果确定了在3—60A Cu范围内界面费米能级的位置在导带底以下约0.9eV处.肖特基势垒在0.5MLCu时已大部分(~80%)形成,在3MLCu时就完全形成.讨论了Cu-GaAs(110)界面和肖特基势垒形成的机制.

 
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