Analytical electron microscopy of high-Tc superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system

Daisuke Shindo; Hiroshi Sato; Gerald L. Liedl; Kenji Hiraga; Norio Kobayashi; Makoto Hirabayashi; Yoshio Muto

doi:10.1143/JJAP.28.L415

Analytical electron microscopy of high-T_c superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system

Daisuke Shindo, Hiroshi Sato, Gerald L. Liedl, Kenji Hiraga, Norio Kobayashi, Makoto Hirabayashi, Yoshio Muto

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Superconductors in the Bi-Ca-Sr-Cu-O system containing a small amount of Pb were investigated by analytical electron microscopy as well as high-resolution electron microscopy. X-ray spectroscopy analysis showed that most of grains in the samples contain approximately the same amount of Pb, and the compositions of the grains with the low-T_c (60 K) phase correspond to (Bi, Pb)_1.1(Ca, Sr)_1.4Cu_1.0O_x. The compositions of the samples containing high-T_c phase differ from grain to grain but indicate higher Cu atomic fraction than that of the low-T_c phase. High resolution electron microscope images directly reveal the modulated structure along the [010] direction with an incommensurate period which is the same as that observed in Bi-Ca-Sr-Cu-O. Electron energy loss spectra were also investigated by means of parallel detection system. The position and shape of the strong peak above the threshold at the oxygen K-edge were discussed relative to data for YBa₂Cu₃O_x.

Original language	English
Pages (from-to)	L415-L418
Journal	Japanese journal of applied physics
Volume	28
Issue number	3 A
DOIs	https://doi.org/10.1143/JJAP.28.L415
Publication status	Published - 1989 Mar
Externally published	Yes

Keywords

Analytical electron microscopy
Electron energy loss spectroscopy
High-T
High-T superconductor
Low-T phase
Parallel detection system Bi-Pb-Ca-Sr-Cu-O

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.28.L415

Cite this

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title = "Analytical electron microscopy of high-Tc superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system",

abstract = "Superconductors in the Bi-Ca-Sr-Cu-O system containing a small amount of Pb were investigated by analytical electron microscopy as well as high-resolution electron microscopy. X-ray spectroscopy analysis showed that most of grains in the samples contain approximately the same amount of Pb, and the compositions of the grains with the low-Tc (60 K) phase correspond to (Bi, Pb)1.1(Ca, Sr)1.4Cu1.0Ox. The compositions of the samples containing high-Tc phase differ from grain to grain but indicate higher Cu atomic fraction than that of the low-Tc phase. High resolution electron microscope images directly reveal the modulated structure along the [010] direction with an incommensurate period which is the same as that observed in Bi-Ca-Sr-Cu-O. Electron energy loss spectra were also investigated by means of parallel detection system. The position and shape of the strong peak above the threshold at the oxygen K-edge were discussed relative to data for YBa2Cu3Ox.",

keywords = "Analytical electron microscopy, Electron energy loss spectroscopy, High-T, High-T superconductor, Low-T phase, Parallel detection system Bi-Pb-Ca-Sr-Cu-O",

author = "Daisuke Shindo and Hiroshi Sato and Liedl, {Gerald L.} and Kenji Hiraga and Norio Kobayashi and Makoto Hirabayashi and Yoshio Muto",

year = "1989",

month = mar,

doi = "10.1143/JJAP.28.L415",

language = "English",

volume = "28",

pages = "L415--L418",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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T1 - Analytical electron microscopy of high-Tc superconductors in the (Bi, Pb)-Ca-Sr-Cu-O system

AU - Shindo, Daisuke

AU - Sato, Hiroshi

AU - Liedl, Gerald L.

AU - Hiraga, Kenji

AU - Kobayashi, Norio

AU - Hirabayashi, Makoto

AU - Muto, Yoshio

PY - 1989/3

Y1 - 1989/3

N2 - Superconductors in the Bi-Ca-Sr-Cu-O system containing a small amount of Pb were investigated by analytical electron microscopy as well as high-resolution electron microscopy. X-ray spectroscopy analysis showed that most of grains in the samples contain approximately the same amount of Pb, and the compositions of the grains with the low-Tc (60 K) phase correspond to (Bi, Pb)1.1(Ca, Sr)1.4Cu1.0Ox. The compositions of the samples containing high-Tc phase differ from grain to grain but indicate higher Cu atomic fraction than that of the low-Tc phase. High resolution electron microscope images directly reveal the modulated structure along the [010] direction with an incommensurate period which is the same as that observed in Bi-Ca-Sr-Cu-O. Electron energy loss spectra were also investigated by means of parallel detection system. The position and shape of the strong peak above the threshold at the oxygen K-edge were discussed relative to data for YBa2Cu3Ox.

AB - Superconductors in the Bi-Ca-Sr-Cu-O system containing a small amount of Pb were investigated by analytical electron microscopy as well as high-resolution electron microscopy. X-ray spectroscopy analysis showed that most of grains in the samples contain approximately the same amount of Pb, and the compositions of the grains with the low-Tc (60 K) phase correspond to (Bi, Pb)1.1(Ca, Sr)1.4Cu1.0Ox. The compositions of the samples containing high-Tc phase differ from grain to grain but indicate higher Cu atomic fraction than that of the low-Tc phase. High resolution electron microscope images directly reveal the modulated structure along the [010] direction with an incommensurate period which is the same as that observed in Bi-Ca-Sr-Cu-O. Electron energy loss spectra were also investigated by means of parallel detection system. The position and shape of the strong peak above the threshold at the oxygen K-edge were discussed relative to data for YBa2Cu3Ox.

KW - Analytical electron microscopy

KW - Electron energy loss spectroscopy

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KW - Parallel detection system Bi-Pb-Ca-Sr-Cu-O

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