Structural modulation in bismuth cuprate superconducting film with continuous epitaxial growth

Kaneko, Satoru; Akiyama, Kensuke; Ito, Takeshi; Shimizu, Yoshitada; Hirabayashi, Yasuo; Ohya, Seishiro; Funakubo, Hiroshi; Yoshimoto, Mamoru

doi:10.1016/j.jcrysgro.2007.11.071

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Structures Of Bi-based Copper Oxides1

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2023

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“…The diffraction pattern of Bi-2223 phase in Figure 23C was taken along the a-axis, which indicates a modulated structure with a modulation wave vector of q∼ < 0 1/4 0 > . The origin of the modulated superstructure would be metal atom displacements in the crystal [106][107][108][109][110][111][112][113][114]. Figure 24A is a TEM image of the Bi-2223/Ag whisker composite with Ag-rich phase.…”

Section: Structures Of Bi-based Copper Oxidesmentioning

confidence: 99%

High-resolution electron microscopy and electron diffraction of perovskite-type superconducting copper oxides

Oku

2014

Nanotechnology Reviews

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High-resolution electron microscopy and electron diffraction are quite useful for structural characterization of perovskite-type superconducting copper oxides on the atomic scale. Valuable information on the crystal structures and the microstructures could be obtained from observed high-resolution images if severe conditions such as thinner crystals and definite defocus values are satisfied. The structure images and electron diffraction patterns include information not only on accurate atomic coordinates of cations but also on ordered arrangements of oxygen atoms and oxygen vacancies. Crystal structures of the various perovskite-type copper oxides were analyzed from the observed structure images. Modulated structures, defects, intergowth, surfaces, and interfaces were also investigated.

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