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X-Ray Interferometric Investigations of Structural Distortions in Semiconductor Crystals Caused by Constant Electric and Magnetic Fields 恒定电场和磁场对半导体晶体结构畸变的x射线干涉研究
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060106
E. Arshakyan, A. Aboyan, P. A. Bezirganyan
The effect of constant electric and magnetic fields on the silicon semiconductor crystals is investigated experimentally. It is shown that electric and magnetic fields create structural distortions leading to changes in X-Ray interferometric pictures, which depend on the magnitude of the applied field. At certain values of the intensity of electric field and the induction of magnetic field, the Moire pictures disappear.
实验研究了恒定电场和恒定磁场对硅半导体晶体的影响。结果表明,电场和磁场产生结构畸变,导致x射线干涉图像的变化,这取决于施加的场的大小。当电场强度和磁场感应强度达到一定值时,云纹图像消失。
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引用次数: 3
Calculation of Electrostatic Crystal Field Parameters of Rare Earth Hydrated Single Crystals 稀土水合单晶静电晶体场参数的计算
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060121
D. Neogy, A. Mukherjee, T. Purohit
The process of calculation of point charge and dipolar contributions to the crystal field parameters is outlined and the properties of the latter are discussed. This procedure is applied to the case of the two most extensively investigated hydrated rare earth crystals, Pr-ethylsulfate and Yb-ethylsul- fate. The positions of the dipole centres and charge centres are estimated on the basis of the recently determined structure of these two compounds. The point charge contribution to C20 is found to be comparable to that due to the point dipoles, although the former are the next nearest neighbors of therare earth ion. On the other hand the point charge contributions to C40, C60, or C66 are negligible. The computed total crystal field parameters, taking the screening and scaling factors into consideration, are found to be in reasonable agreement with those derived from experimental data except for C20. Die Berechnungsmethode der Punktladungs- und die Dipolbeitrage zu den Kristallfeldparametern wird dargestellt und die Eigenschaften der Parameter werden diskutiert. Dieses Verfahren wird auf den Fall der beiden am haufigsten untersuchten Seltenerdkristalle, Pr-Ethylsulfat und Yb Ethylsulfat. Die Lagen der Dipolzentren und Ladungszentren werden auf der Grundlage der kiirz lich bestimmten Struktur dieser beiden Verbindungen berechnet. Es wird gefunden, da13 der Beitrag der Punktladungen zu C20 mit dem von den Punktdipolen herriihrenden vergleichbar ist, obwohl die ersteren die iibernachsten Nachbarn der Seltenerdionen sind. Andererseits sind die Punktladungsbeitrage zu C40, C60 oder C65 vernachlassigbar. Die berechneten Gesamt-Kristallfeldparameter, unter Beriicksichtigung von Abschirm- und Skalierungsfaktoren, sind bis auf C20 in verniinftiger nbereinstimmung mit denen aus experimentellen Werten.
概述了点电荷和偶极对晶体场参数贡献的计算过程,并讨论了后者的性质。该程序适用于两种最广泛研究的水合稀土晶体,硫酸乙酯和硫酸乙酯。偶极子中心和电荷中心的位置是根据这两种化合物最近确定的结构来估计的。发现点电荷对C20的贡献与点偶极子的贡献相当,尽管前者是地球离子的近邻。另一方面,点电荷对C40、C60或C66的贡献可以忽略不计。除C20外,计算得到的总晶场参数在考虑筛选和标度因素的情况下与实验数据基本一致。结晶结晶法和结晶结晶法的结晶结晶法,结晶结晶法的结晶结晶法和结晶结晶法的结晶结晶法。[2] [2] [3] [3] [3] [3] [3] [3] [3] [3] [3] [3] [4] [3] [4] [4] [3]死拉根der Dipolzentren和Ladungszentren了汪汪汪der Grundlage der kiirz巫妖bestimmten合写这位beiden Verbindungen berechnet。这句话的意思是:“我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是,我想说的是。”在C40, C60和C65中使用了不同的分类。在Beriicksichtigung von Abschirm和skalierungsaktoren的指导下,Die berechneten Gesamt-Kristallfeldparameter的研究表明,他的研究结果表明,在实验中,他的研究对象是Werten。
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引用次数: 0
Electrical Conduction in Germanium Dioxide Thin Films 二氧化锗薄膜的导电性
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060145
N. Sasi, C. Balasubramanian, S. Narayandass
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引用次数: 0
Argon Ion Effect on Solid Phase Reaction in Copper-Tin, Copper-Antimony Films 氩离子对铜锡、铜锑薄膜固相反应的影响
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060141
É. M. Shpilevskiĭ, D. A. Gorbachevskh
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引用次数: 0
Temperature Dependence of the Effective Stress for KC1 Single Crystals KC1单晶有效应力的温度依赖性
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060140
T. Ohgaku, N. Takeuchi
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引用次数: 1
Natural Surface Films on GeS GeS的天然表面膜
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060142
F. Lukes̆
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引用次数: 2
Anomaly in the Magnetic Properties of the YCo4B Compound YCo4B化合物磁性能的异常
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060124
T. T. Dung, N. P. Thuy, N. Hong, T. D. Hien
Spin reorientation observed in the YCo4B compound at 145 K in which the magnetic moment rotates from the c-axis to the basal plane on decreasing temperature is reported. A preliminary crystal field calculation reveals that the negative anisotropy of 6i site in YCo4B is large and responsible for the basal plane anisotropy of the compound at low temperature. The competition between this negative contribution to anisotropy and the positive one from the Co ion on the 2c site may be the reason of the observed spin reorientation. [Russian Text Ignored].
报道了YCo4B化合物在145k时的自旋取向,其磁矩随温度的降低从c轴向基面旋转。初步的晶体场计算表明,YCo4B中6i位的负各向异性较大,是低温下化合物基面各向异性的主要原因。这种对各向异性的负贡献与2c位上Co离子的正贡献之间的竞争可能是观察到的自旋重取向的原因。[忽略俄语文本]。
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引用次数: 30
The Electronic and Optical Properties of Germanium Tellurite Glasses Containing Various Transition Metal Oxides 含多种过渡金属氧化物的碲酸锗玻璃的电子学和光学性质
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060123
M. N. Khan, M. Hassan, C. Hogarth
Various transition metal oxides, such as TiO2, V2O5, NiO, CuO, and ZnO are added to germanium-tellurite glass and measurements are reported of the electrical conductivity, density, optical absorption, infra-red absorption spectra, and electron spin resonance. It is found that the d.c. conductivity of glasses containing the same amount of V2O5 is higher than that of germanium tellurite glasses containing a similar amount of other transition metal oxides, and is due to hopping between localized states. The optical absorption measurements show that the fundamental absorption edge is a function of glass composition and the optical absorption is due to forbidden indirect transitions. From the infra-red absorption spectra, it is found that the addition of transition metal oxides does not introduce any new absorption band in the infra-red spectrum of germanium tellurite glasses. A small shift of existing absorptions toward higher wave number is observed. The ESR measurements revealed that some transition metal ions are diamagnetic while others are paramagnetic in the glass network. Quelques oxydes des metaux transitionnels comme TiO2, V2O5, NiO, CuO et ZnO etaient introduits dans les verres du tellurite de germanium, et les resultats des mesures de la conductibilite elec-trique, du densite, du spectre d'absorption optique et d'absorption infra-rouge, et de la resonance electronique paramagnetique (EPR) sont presentes. On etablit que la conductibilite directe des verres avec V2O5 est plus grande que dans les verres du tellurite de germanium avec la měne contenu d'autre oxyde du metal transitionnel, et est une consequence d'un processus electronique de “hopping” entre les etats electroniques localises. Les resultats pour l'absorption optique montrent que la limite fundamentale d'absorption est une fonction de la composition du verre et l'absorption optique est associee avec les transitions non-directes. L'absorption spectrale infra-rouge indiquent que l'addition des oxydes metalliques transitionnels n'introduit pas les bandes d'absorption nouvel-les dans le verre du tellurite de germanium. Une petite deplacement des absorptions bien connues ver les energies plus petites est observee. Les mesures de EPR indiquent que quelques metaux transitionnels sont diamagnetiques et les autres sont paramagnetiques dans le verre.
在锗碲酸盐玻璃中加入TiO2、V2O5、NiO、CuO和ZnO等过渡金属氧化物,并对其电导率、密度、光吸收、红外吸收光谱和电子自旋共振进行了测量。结果表明,含有相同数量V2O5的玻璃的直流电导率高于含有相似数量其他过渡金属氧化物的碲化锗玻璃,这是由于局域态之间的跳变。光学吸收测量表明,基本吸收边是玻璃成分的函数,光学吸收是由于禁止间接跃迁引起的。从红外吸收光谱中发现,过渡金属氧化物的加入并没有在碲锗玻璃的红外光谱中引入新的吸收带。现有的吸收向更高的波数有一个小的移动。ESR测量结果表明,在玻璃网络中,一些过渡金属离子具有抗磁性,而另一些则具有顺磁性。本文介绍了TiO2、V2O5、NiO、CuO、ZnO等材料的变过渡态氧化物,介绍了锗碲化物的特性,介绍了锗碲化物的导电性、密度、光谱、吸收光、吸收红外、共振电子顺磁性(EPR)等材料的测量结果。在etablit que la conducbilite directe des verres avec V2O5 est + grande que dans les verres du碲de germanium avec ne contenu d' tre oxide du metallic transitionnel, et est one consequence d' process electronique de " hopping " entres les etats electroniques localises上。结果表明,吸收光的光量是有限的,吸收光的光量是一个函数,吸收光的光量是一个函数,吸收光的光量是一个函数。吸收光谱、红外光谱、独立光谱、加氧光谱、金属液体、过渡光谱、引入光谱、吸收光谱、新光谱、新光谱、锗碲光谱。一种微小的置换使得吸收持续在较低的能量和较小的观测值上。EPR的度量是独立的、独立的、过渡的、反磁性的,而非非磁性的、反磁性的和非磁性的。
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引用次数: 12
Low Pressure Chemical Vapour Deposition Amorphous Silicon Behaviour under Annealing 退火条件下低压化学气相沉积非晶硅的行为
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060102
G. Pastor, P. Tejedor, I. Jiménez, E. Domínguez, M. Torres, J. García-Ramos
Four types of amorphous silicon materials are grown in a low pressure chemical vapour deposition (LPCVD) system and their differences in colour, adherence, smoothness, as well as crystallinity of the derived materials are investigated as a function of annealing temperature. Experimental results indicate that amorphous silicon growth can actually occur, either through an heterogeneous mechanism on the substrate surface or through homogeneous nucleation in the vapour phase. In general, surface grown amorphous silicon renders high quality polysilicon after annealing. This is not the case for amorphous silicon nucleated in the vapour phase, which produces poor quality polysilicon under similar temperature conditions. Vier Arten von amorphem Siliziummaterial werden in einem Niederdruck-CVD (LPCVD)-System hergestellt und ihre Unterschiede sowohl in Farbe, Haftfestigkeit, Glattheit als auch hinsichtlich ihrer Kristallinizitat als Funktion der Temperungstemperatur untersucht. Die experimentellen Ergebnisse zeigen, das Wachstum von amorphem Silizium tatsachlich auftreten kann, entweder uber einen heterogenen Mechanismus auf der Substratoberflache oder uber eine homogene Keimbildung in der Dampfphase. Im allgemeinen ergibt oberflachengewachsenes amorphes Silizium nach Temperung Hochqualitatspolysilizium. Dies ist nicht der Fall fur amorphes Silizium mit Keimbildung in der Dampfphase, das Polysilizium mit geringer Qualitat unter ahnlichen Temperaturbedingungen liefert.
在低压化学气相沉积(LPCVD)系统中生长了四种类型的非晶硅材料,并研究了衍生材料的颜色,附着力,光滑度以及结晶度的差异作为退火温度的函数。实验结果表明,非晶态硅可以通过基片表面的非均相机制生长,也可以通过气相的均匀成核生长。一般来说,表面生长的非晶态硅经退火后可获得高质量的多晶硅。这不是在气相成核的非晶态硅的情况,在类似的温度条件下产生质量差的多晶硅。在einem niederdrk - cvd (LPCVD)系统中制备的无定形硅材料,以及在Farbe, hafdekeit, glatet中制备的三种无定形硅材料,以及在温度-温度条件下的结晶化和功能。Die experimenten Ergebnisse zeigen, das Wachstum von amorpheum Silizium tatsachlich auftreten kann, weweder einternon - heterogeneous Mechanismus auder substrate - flache oder eine homogene keimbiling in der damp phase。在所有的gemeinen上都可以看到,硅酸是一种非晶态的硅酸,是一种聚硅酸。在湿相条件下研究了非晶硅质硅质,在低温条件下研究了聚硅质硅质。
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引用次数: 0
Peculiarities of Radiative Recombination in Gallium Arsenide Doped with Shallow Donors and Acceptors 浅层给体和受体掺杂砷化镓辐射复合的特性
Pub Date : 1988-03-16 DOI: 10.1002/PSSA.2211060130
D. S. Domanevskii, S. V. Zhokhovets, M. V. Pkokopenya
The photoluminescence of epitaxial n-GaAs: (Te + Ge) with an intermediate degree of compensation is studied as a function of excitation level, the parameters of a “moving” band are determined and compared with the theory. Discrepancies found between theory and experiment can be understood if, when considering thermalization processes of non-equilibrium holes, their transitions between tail states, passing by the valence band, are taken into account. [Russian Text Ignored].
研究了具有中等补偿程度的外延n-GaAs: (Te + Ge)的光致发光与激发能级的关系,确定了“移动”带的参数,并与理论结果进行了比较。在考虑非平衡空穴的热化过程时,如果考虑它们经过价带的尾态之间的跃迁,理论与实验之间的差异就可以理解。[忽略俄语文本]。
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引用次数: 1
期刊
March 16
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