Intensity of X-ray Diffraction by a One-dimensionally Disordered Crystal (III) The Close-packed Structure.

1954 ◽  
Vol 9 (2) ◽  
pp. 177-183 ◽  
Author(s):  
Jiro Kakinoki ◽  
Yukitomo Komura
Keyword(s):  
X Ray Diffraction ◽  
X Ray ◽  
Close Packed Structure ◽  
Packed Structure ◽  
Disordered Crystal

scholarly journals Solidified Fillings of Nanopores

2005 ◽  
Vol 876 ◽  
Author(s):  
Patrick Huber ◽  
Klaus Knorr
Keyword(s):  
Pore Diameter ◽  
Stacking Faults ◽  
Pore Geometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Medium Length ◽  
Close Packed Structure ◽  
Packed Structure ◽  
Diffraction Patterns ◽  
Selection Of

AbstractWe present a selection of x-ray diffraction patterns of spherical (He, Ar), dumbbell- (N2, CO), and chain-like molecules (n-C9H20, n-C19H40) solidified in nanopores of silica glass (mean pore diameter 7nm). These patterns allow us to demonstrate how key principles governing crystallization have to be adapted in order to accomplish solidification in restricted geometries. 4He, Ar, and the spherical close packed phases of CO and N2 adjust to the pore geometry by introducing a sizeable amount of stacking faults. For the pore solidified, medium-length chainlike n-C19H40 we observe a close packed structure without lamellar ordering, whereas for the short-chain C9H20 the layering principle survives, albeit in a modified fashion compared to the bulk phase.

Structural and Electronic Studies of C60 Films Deposited Using a New Technique of Neutral Cluster Beam Deposition

1994 ◽  
Vol 349 ◽  
Author(s):  
Zhong-Min Ren ◽  
Zhi-Feng Ying ◽  
Xia-Xing Xiong ◽  
Mao-Qi He ◽  
Yuan-Cheng Du ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
X Ray Diffraction ◽  
Neutral Cluster ◽  
X Ray ◽  
Close Packed Structure ◽  
Oxygen Contamination ◽  
Packed Structure ◽  
A New Technique ◽  
Cluster Beams ◽  
Cluster Beam Deposition

ABSTRACTC50 films, are deposited on Si(111) substrates using neutral cluster beams of fullerenes generated from a crucible with a special nozzle. X-ray diffraction (XRD) have been used to investigate the structural properties of C50 films, which indicate highly textural films as close-packed structure with strong (110) XRD assignment and 400Å for correlation length. Raman spectrum indicates the existence of stable C60 films. X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES) measurements are carried out to analyze the electronic properties of the films. The resistivity to contamination of C50 film deposited here is better than that deposited by MBE. Different kinds of oxygen contamination on the surfaces of C50 films and HDPG are detected by the results of O 1s XPS analyses.

Cu2ZnSnSe4 thin films prepared by selenization of precursor evaporated from Cu2ZnSnSe4 and Na2Se

2014 ◽  
Vol 1603 ◽  
Author(s):  
Mitsuki Nakashima ◽  
Toshiyuki Yamaguchi ◽  
Masanobu Izaki
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Thin Film Solar Cells ◽  
X Ray Diffraction ◽  
X Ray ◽  
Epma Analysis ◽  
Close Packed Structure ◽  
Columnar Grains ◽  
Packed Structure ◽  
Selenization Process

ABSTRACTCu2ZnSnSe4 thin films were prepared by using the synthesized Cu2ZnSnSe4 ingot and Na2Se powder at various Na2Se/Cu2ZnSnSe4 mole ratio as evaporation materials for selenization process. From EPMA analysis, the composition was approximately constant even if the Na2Se/Cu2ZnSnSe4 mole ratio increased. X-ray diffraction studies revealed that the thin films had a kesterite Cu2ZnSnSe4 structure and the foreign phases disappeared with increasing the Na2Se/Cu2ZnSnSe4 mole ratio. The Na2Se addition enhanced to grow thin films having a close-packed structure and columnar grains. The values of Voc and Isc in Cu2ZnSnSe4 thin film solar cells increased with increasing the Na2Se/Cu2ZnSnSe4 mole ratio.

DEGENERATE CRYSTALLINE PHASE IN A TWO-DIMENSIONAL SYSTEM OF HARD DIMERS

1991 ◽  
Vol 05 (28) ◽  
pp. 1843-1851 ◽  
Author(s):  
K.W. WOJCIECHOWSKI
Keyword(s):  
Monte Carlo ◽  
Thermodynamic Stability ◽  
Crystalline Phase ◽  
Solid Phase ◽  
Dimensional System ◽  
Two Dimensional ◽  
Close Packed Structure ◽  
Packed Structure ◽  
Two Dimensional System ◽  
Disordered Crystal

Monte Carlo simulations showing thermodynamic stability of a non-periodic solid phase in a system of two-dimensional hard, homonuclear dimers are reviewed briefly. The thermodynamic stability of this phase, called degenerate (or disordered) crystal, follows from a huge degeneracy of the close packed structure of the dimers. The degenerate crystalline phase and its various analogues constitute intermediate steps on a path joining periodically ordered crystalline states with completely disordered states of matter.

scholarly journals Determination of the crystallite size and crystal structure of magnesium powder by x-ray diffraction

2020 ◽  
Vol 20 (3) ◽  
pp. 61-65
Author(s):  
ISMAIL ISMAIL ◽  
RESI MULIANI ◽  
ZULFALINA ZULFALINA ◽  
SITI HAJAR SHEIKH MD FADZULLAH
Keyword(s):  
Crystal Structure ◽  
Crystallite Size ◽  
Rietveld Method ◽  
Average Crystallite Size ◽  
Powder Sample ◽  
X Ray Diffraction ◽  
Magnesium Powder ◽  
X Ray ◽  
Lattice Constants ◽  
Packed Structure

Magnesium powder has become an important material in the development of science and technology such as alloy and hydrogen storage. In this work, the chemical composition, crystallite size, and crystal structure of the magnesium powder sample have been studied by using x-ray fluorescent and x-ray diffraction. The x-ray diffraction data of the magnesium powder sample was analyzed by using the Rietveld method to obtain the crystal structure. Our results show that the purity of our magnesium powder sample is 93.1%. Our sample has good crystallinity with the average crystallite size of 31 nm. The crystal structure is found to be a hexagonal closed-packed structure with the lattice constants of 3.2100 Å (a and b-axis) and 5.2107 Å (c-axis). Our result revealed that the lattice constant in the c-axis of magnesium powder is influenced by impurity. This finding suggests that the impurity can affect the crystal structure of a material in general.

scholarly journals Intensity of X-ray Diffraction by a One-dimensionally Disordered Crystal

X-RAYS ◽  
1951 ◽  
Vol 6 (3-4) ◽  
pp. 95-104
Author(s):  
Jiro KAKINOKI ◽  
Yukitomo KOMURA
Keyword(s):  
X Ray Diffraction ◽  
X Ray ◽  
Disordered Crystal

scholarly journals Intensity of X-ray Diffraction by a One-dimensionally Disordered Crystal

X-RAYS ◽  
1952 ◽  
Vol 7 (1-2-3-4) ◽  
pp. 25-34
Author(s):  
Jiro KAKINOKI ◽  
Yukitomo KOMURA
Keyword(s):  
X Ray Diffraction ◽  
X Ray ◽  
Disordered Crystal
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