Modulated structure and molecular dissociation of solid chlorine at high pressures

Peifang Li; Guoying Gao; Yanming Ma

doi:10.1063/1.4742152

Modulated structure and molecular dissociation of solid chlorine at high pressures

The Journal of Chemical Physics ◽

10.1063/1.4742152 ◽

2012 ◽

Vol 137 (6) ◽

pp. 064502 ◽

Cited By ~ 14

Author(s):

Peifang Li ◽

Guoying Gao ◽

Yanming Ma

Keyword(s):

High Pressures ◽

Molecular Dissociation ◽

Modulated Structure

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Modulated structure of solid iodine during its molecular dissociation under high pressure

Nature ◽

10.1038/nature01724 ◽

2003 ◽

Vol 423 (6943) ◽

pp. 971-974 ◽

Cited By ~ 90

Author(s):

Takemura Kenichi ◽

Sato Kyoko ◽

Fujihisa Hiroshi ◽

Onoda Mitsuko

Keyword(s):

High Pressure ◽

Molecular Dissociation ◽

Modulated Structure

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Amorphization and molecular dissociation of SnI4at high pressures

Acta Crystallographica Section A Foundations of Crystallography ◽

10.1107/s010876739607852x ◽

1996 ◽

Vol 52 (a1) ◽

pp. C527-C527

Author(s):

N. Hamaya ◽

K. Sato ◽

K. Usui ◽

K. Fuchizaki ◽

Y. Fujii ◽

...

Keyword(s):

High Pressures ◽

Molecular Dissociation

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Intergrowth of modulated structures in high Tc Bi-Sr-Ca-Cu-O superconductors

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100173510 ◽

1990 ◽

Vol 48 (4) ◽

pp. 76-77

Author(s):

A.Q. He ◽

G.W. Qiao ◽

J. Zhu ◽

H.Q. Ye

Keyword(s):

Twin Structure ◽

Modulated Structure ◽

High Tc ◽

One Dimensional ◽

Lattice Constants ◽

Superconducting Phases ◽

Modulated Structures ◽

Layer Structures

Since the first discovery of high Tc Bi-Sr-Ca-Cu-O superconductor by Maeda et al, many EM works have been done on it. The results show that the superconducting phases have a type of ordered layer structures similar to that in Y-Ba-Cu-O system formulated in Bi2Sr2Can−1CunO2n+4 (n=1,2,3) (simply called 22(n-1) phase) with lattice constants of a=0.358, b=0.382nm but the length of c being different according to the different value of n in the formulate. Unlike the twin structure observed in the Y-Ba-Cu-O system, there is an incommensurate modulated structure in the superconducting phases of Bi system superconductors. Modulated wavelengths of both 1.3 and 2.7 nm have been observed in the 2212 phase. This communication mainly presents the intergrowth of these two kinds of one-dimensional modulated structures in 2212 phase.

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Characterization of Modulated Structure Through Structure Images and their Computer Simulation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100179105 ◽

1990 ◽

Vol 48 (1) ◽

pp. 70-71

Author(s):

Kiyomichi Nakai ◽

Yusuke Isobe ◽

Chiken Kinoshita ◽

Kazutoshi Shinohara

Keyword(s):

Computer Simulation ◽

High Resolution ◽

Spherical Aberration ◽

High Resolution Electron Microscopy ◽

Basic Mechanism ◽

Objective Lens ◽

Specimen Thickness ◽

Transmitted Beam ◽

Modulated Structure ◽

Resolution Electron

Induced spinodal decomposition under electron irradiation in a Ni-Au alloy has been investigated with respect to its basic mechanism and confirmed to be caused by the relaxation of coherent strain associated with modulated structure. Modulation of white-dots on structure images of modulated structure due to high-resolution electron microscopy is reduced with irradiation. In this paper the atom arrangement of the modulated structure is confirmed with computer simulation on the structure images, and the relaxation of the coherent strain is concluded to be due to the reduction of phase-modulation.Structure images of three-dimensional modulated structure along <100> were taken with the JEM-4000EX high-resolution electron microscope at the HVEM Laboratory, Kyushu University. The transmitted beam and four 200 reflections with their satellites from the modulated structure in an fee Ni-30.0at%Au alloy under illumination of 400keV electrons were used for the structure images under a condition of the spherical aberration constant of the objective lens, Cs = 1mm, the divergence of the beam, α = 3 × 10-4 rad, underfocus, Δf ≃ -50nm and specimen thickness, t ≃ 15nm. The CIHRTEM code was used for the simulation of the structure image.

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