X-Ray Topography of Thin Subsurface Layers

Afanas’ev, A. M.; Aleksandrov, P. A.; Имамов, Р. М.; Pashaev, É. M.; Polovinkina, V. I.

doi:10.1515/9783112494806-001

Cited by 3 publications

(7 citation statements)

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“…Thus, it is quite advantages to carry out experiments in grazing incidence geometry, which were proposed for the first time by Marra et al [115]. This method has developed later as a useful tool for surface sensitive XSW measurements [116][117][118][119] (see also for references a book [12]).…”

Section: Discussionmentioning

confidence: 99%

“…Even if high-energy resolution detectors are used the contribution to the total photoelectron yield in the recorded energy range is, in general, the sum of the contributions of primary photoelectrons ejected from different atomic subshells and from different kinds of atoms. Finally, the photoelectron yield is [12]…”

Section: Multicomponent Crystalsmentioning

confidence: 99%

“…From the beginning, this angular dependence of the photoelectron yield curve was understood to contain essential information about the structure of the surface layers. Subsequently this field of research was developed intensively in several scientific centres of the former Soviet Union (for details see review paper [11] and a book [12]).…”

Section: Introductionmentioning

confidence: 99%

“…for investigating the structure of real crystals (including those containing different types of defects, implanted crystals, epilayers on the surface of perfect crystals, heterostructures, etc), has not been reviewed recently. The previous review on this subject [11] was written nearly 15 years ago (see also [12]) and many new results have not been summarized. At the same time, the foundations of the theory of XSW in real crystals remains of great interest (see, for example, the recent publication [23]).…”

Section: Introductionmentioning

confidence: 99%

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Theory and applications of x-ray standing waves in real crystals

Vartanyants¹,

Kovalchuk

2001

Rep. Prog. Phys.

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Theoretical aspects of x-ray standing wave method for investigation of the real structure of crystals are considered in this review paper. Starting from the general approach of the secondary radiation yield from deformed crystals this theory is applied to different concreate cases. Various models of deformed crystals like: bicrystal model, multilayer model, crystals with extended deformation field are considered in detailes. Peculiarities of x-ray standing wave behavior in different scattering geometries (Bragg, Laue) are analysed in detailes. New possibilities to solve the phase problem with x-ray standing wave method are discussed in the review. General theoretical approaches are illustrated with a big number of experimental results. * present address:

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Section: Discussionmentioning

confidence: 99%

Section: Multicomponent Crystalsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Theory and applications of x-ray standing waves in real crystals

Vartanyants¹,

Kovalchuk

2001

Rep. Prog. Phys.

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“…Phase retrieval has a rich history throughout many domains of optical and quantum physics, dating back at least as far as Wolfgang Pauli's famous question regarding the possibility of reconstructing a complex scalar wave-function given knowledge of the modulus of both its real-space and momentum-space wave-functions [2]. Accordingly, phase retrieval methodologies have been applied in many imaging-related fields including visible-light optics [3], X-ray optics [4][5][6][7], electron optics [8] and neutron optics [9]. While linear optics is typically considered, phase retrieval for non-linear fields (such as those obeying the non-linear Schrödinger equation) has also been studied [10].…”

Section: Introductionmentioning

confidence: 99%

Deterministic X-ray Bragg coherent diffraction imaging as a seed for subsequent iterative reconstruction

et al. 2018

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Coherent diffractive imaging (CDI), using both x-rays and electrons, has made extremely rapid progress over the past two decades. The associated reconstruction algorithms are typically iterative, and seeded with a crude first estimate. A deterministic method for Bragg Coherent Diffraction Imaging (Pavlov et al 2017 Sci. Rep. 7 1132) is used as a more refined starting point for a shrink-wrap iterative reconstruction procedure. The appropriate comparison with the autocorrelation function as a starting point is performed. Real-space and Fourier-space error metrics are used to analyse the convergence of the reconstruction procedure for noisy and noise-free simulated data. Our results suggest that the use of deterministic-CDI reconstructions, as a seed for subsequent iterative-CDI refinement, may boost the speed and degree of convergence compared to the cruder seeds that are currently commonly used. We also highlight the utility of monitoring multiple error metrics in the context of iterative refinement.

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Formation of porous nanostructured lead telluride films by an anodic electrochemical etching method

Zimin¹,

Bogoyavlenskaya²,

Buchin³

et al. 2009

Semicond. Sci. Technol.

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Comprehensive research of the structural, optical and electrical properties of a PbTe/CaF 2 /Si(1 1 1) epitaxial system after anodic electrochemical treatment in a Norr solution electrolyte with a low current density of 6 mA cm −2 was carried out. It is shown that the anodizing results in the increase of the band gap and resistivity and in the decrease of the refractive index of lead telluride. Using secondary ion mass spectrometry, a specific change of the C, K, H element distribution in depth of PbTe films after electrochemical treatment was detected. It is demonstrated that the set of presented experimental results can be explained from the standpoint of the formation of a mesoporous structure of lead telluride with a porosity value of about 50%. The effective radius of PbTe nanoparticles is equal to 13 nm. Triple-crystal x-ray diffractometry results analysis showed that the pores have spherical voids with an average dimension of 40 nm.

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X-Ray Topography of Thin Subsurface Layers

Cited by 3 publications

References 0 publications

Theory and applications of x-ray standing waves in real crystals

Theory and applications of x-ray standing waves in real crystals

Deterministic X-ray Bragg coherent diffraction imaging as a seed for subsequent iterative reconstruction

Formation of porous nanostructured lead telluride films by an anodic electrochemical etching method

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