Unusual X-Ray Diffraction Vector Shift Observed in Heterogeneous Langmuir-Blodgett Multilayer Films

1992 ◽  
Vol 247 ◽  
Author(s):  
Yoshio Nogami ◽  
Kazuyoshi Ogasawara ◽  
Shigeki Takeuchi ◽  
Takehiko Ishiguro ◽  
Kazumasa Ohsumi ◽  
...  
Keyword(s):  
Diffraction Method ◽  
X Ray Diffraction ◽  
Diffraction Vector ◽  
X Ray ◽  
Langmuir Blodgett ◽  
Alkyl Chains ◽  
Oscillatory Structure ◽  
Langmuir Blodgett Films ◽  
Diffraction Patterns ◽  
Vector Shift

ABSTRACTStacking of heterogeneous Langmuir-Blodgett films was studied by high resolution X-ray diffraction method using synchrotron radiation (SR) source. The diffraction patterns of the heterogeneous films formed with alternately deposited Cd salts of fatty acids with different length of alkyl chains exhibit anomalous oscillatory structure in diffraction vector.

scholarly journals X-ray diffraction method application to assess the energy losses on explosive-rock contact under various blasting

2020 ◽  
Vol 168 ◽  
pp. 00051
Author(s):  
Ihor Kratkovskyi ◽  
Ernest Yefremov ◽  
Kostyantyn Ishchenko ◽  
Sergo Khomeriki
Keyword(s):  
Rock Fracture ◽  
Diffraction Method ◽  
Optical Systems ◽  
Energy Losses ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wave Nature ◽  
Diffraction Patterns ◽  
The Individual ◽  
Granulometric Characteristics

The dissipative energy losses of the explosion on the explosive-rock contact are usually evaluated with comparative analysis of the particle size distribution of finely dispersed fractions (0-100 microns). The more tiny particles contained in the destruction products, the higher there is a level of energy loss during the explosion. Fine dust granulometric characteristics are determined by processing the mass measurements data of the individual smallest particles sizes when decoding microphotographs obtained by a microscope. However due to the chromatic aberrations due the wave nature of light and the optical systems imperfection, it is not possible to reliably estimate the mass and granulometric characteristics particles of micron size. X-ray diffraction method for studying ultrafine rock fracture products makes it possible to estimate the dissipative energy losses on explosive-rock contact based on the reflected X-ray beam total intensity in diffractograms. In order to establish the effectiveness of methods for reducing the level of dissipative energy losses of an explosion, X-ray diffraction patterns of finely dispersed fracture products of rock samples under various conditions of dynamic loading are analyzed (using different charge designs, attenuating the rocks by the action of a surfactant, and the force action of a different gradient stress field).

X-ray diffraction analysis for thin films of PbTiO3-La2/3TiO3 prepared by the sol-gel method

1994 ◽  
Vol 9 (8) ◽  
pp. 2133-2137 ◽  
Author(s):  
Hideki Yoshioka
Keyword(s):  
Thin Films ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Diffraction Method ◽  
Dip Coating ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Methods ◽  
Diffraction Patterns ◽  
System 1

Thin films in the system (1 - x) PbTiO3−xLa2/3TiO3 were prepared by the sol-gel and dip-coating methods. Phases deposited in the films and the lattice parameters as a function of the composition were investigated by the x-ray diffraction method. The solid solutions with a perovskite structure were formed as a single phase with x up to 0.9. For the composition of x = 1.0, metastable La-Ti-O perovskite phase with a small amount of the impurity phase, La2Ti2O7, was obtained. Simulation of x-ray diffraction patterns based on the defect structure model shows that the structure of the La-Ti-O perovskite phase includes randomly distributed cation vacancies at the A-site, namely (La2/3□1/3)TiO3.

Spectroscopic and X-ray diffraction study of Langmuir–Blodgett films of some 1,4,8,11,15,18-hexaalkyl-22,25-bis(carboxypropyl)phthalocyanines

1991 ◽  
Vol 1 (1) ◽  
pp. 121-127 ◽  
Author(s):  
Michael J. Cook ◽  
Neil B. McKeown ◽  
John M. Simmons ◽  
Andrew J. Thomson ◽  
Mervyn F. Daniel ◽  
...  
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films

Supramolecular ordering of bipolar lipids from Archaea in Langmuir-Blodgett films by low-angle X-ray diffraction

1996 ◽  
Vol 284-285 ◽  
pp. 459-463 ◽  
Author(s):  
S. Dante ◽  
M. De Rosa ◽  
O. Francescangeli ◽  
C. Nicolini ◽  
F. Rustichelli ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
X Ray ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Supramolecular Ordering
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