Fingerprint of oxygen vacancies in Gd superconductors

H. Shibahara; J. P. Zhang; L. D. Marks

doi:10.1016/0304-3991(89)90086-7

Fingerprint of oxygen vacancies in Gd superconductors

H. Shibahara^*, J. P. Zhang, L. D. Marks

^*Corresponding author for this work

Materials Science and Engineering

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

11 Scopus citations

Abstract

The arrangement of the oxygen atoms in high temperature superconductors is known to be critical to their properties. High resolution electron microscope imaging (HREM) accompanied by computer simulations has been anticipated to reveal the oxygen vacancies in the basal plane. Although images of sufficient resolution have been reported by many authors, the [100] and [010] projections have not been differentiated experimentally. We confirm here that they are clearly different using a specimen which contains a coherent grain boundary with (100), (001) in one grain parallel to (001), (010) in the second. Unfortunately we find that it is not possible to clearly answer the more important question of the oxygen content at the grain boundary.

Original language	English (US)
Pages (from-to)	185-191
Number of pages	7
Journal	Ultramicroscopy
Volume	27
Issue number	2
DOIs	https://doi.org/10.1016/0304-3991(89)90086-7
State	Published - Mar 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Instrumentation

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10.1016/0304-3991(89)90086-7

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title = "Fingerprint of oxygen vacancies in Gd superconductors",

abstract = "The arrangement of the oxygen atoms in high temperature superconductors is known to be critical to their properties. High resolution electron microscope imaging (HREM) accompanied by computer simulations has been anticipated to reveal the oxygen vacancies in the basal plane. Although images of sufficient resolution have been reported by many authors, the [100] and [010] projections have not been differentiated experimentally. We confirm here that they are clearly different using a specimen which contains a coherent grain boundary with (100), (001) in one grain parallel to (001), (010) in the second. Unfortunately we find that it is not possible to clearly answer the more important question of the oxygen content at the grain boundary.",

author = "H. Shibahara and Zhang, {J. P.} and Marks, {L. D.}",

note = "Funding Information: This work was supportedb y the National Science Foundationth rought he NorthwesterUn ni-versity Materials ResearchC enteron Grant no. DMR 85-20280",

year = "1989",

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doi = "10.1016/0304-3991(89)90086-7",

language = "English (US)",

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T1 - Fingerprint of oxygen vacancies in Gd superconductors

AU - Shibahara, H.

AU - Zhang, J. P.

AU - Marks, L. D.

N1 - Funding Information: This work was supportedb y the National Science Foundationth rought he NorthwesterUn ni-versity Materials ResearchC enteron Grant no. DMR 85-20280

PY - 1989/3

Y1 - 1989/3

N2 - The arrangement of the oxygen atoms in high temperature superconductors is known to be critical to their properties. High resolution electron microscope imaging (HREM) accompanied by computer simulations has been anticipated to reveal the oxygen vacancies in the basal plane. Although images of sufficient resolution have been reported by many authors, the [100] and [010] projections have not been differentiated experimentally. We confirm here that they are clearly different using a specimen which contains a coherent grain boundary with (100), (001) in one grain parallel to (001), (010) in the second. Unfortunately we find that it is not possible to clearly answer the more important question of the oxygen content at the grain boundary.

AB - The arrangement of the oxygen atoms in high temperature superconductors is known to be critical to their properties. High resolution electron microscope imaging (HREM) accompanied by computer simulations has been anticipated to reveal the oxygen vacancies in the basal plane. Although images of sufficient resolution have been reported by many authors, the [100] and [010] projections have not been differentiated experimentally. We confirm here that they are clearly different using a specimen which contains a coherent grain boundary with (100), (001) in one grain parallel to (001), (010) in the second. Unfortunately we find that it is not possible to clearly answer the more important question of the oxygen content at the grain boundary.

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Fingerprint of oxygen vacancies in Gd superconductors

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