Detection of oxygen deficient regions in yba2cu3 ox superconductors by polarized optical microscopy

Masato Murakami; Masashi Yoshida; Hiroyuki Fujimoto; Satoshi Gotoh; Naoki Koshizuka; Shoji Tanaka

doi:10.1143/JJAP.30.L796

Detection of oxygen deficient regions in yba₂cu₃ o_x superconductors by polarized optical microscopy

Masato Murakami, Masashi Yoshida, Hiroyuki Fujimoto, Satoshi Gotoh, Naoki Koshizuka, Shoji Tanaka

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

5 Citations (Scopus)

Abstract

We have found that oxygen deficient regions in YBa₂Cu₃O_x superconductors exhibit different colors from that of the matrix under polarized light. When oxygen annealing was insufficient, large melt-grown YBaCuO crystals occasionally contained narrow bands exhibiting different colors where the twin structure was absent. Upon annealing in oxygen atmosphere, these banded regions disappeared, indicating that these regions are oxygen deficient. Raman spectroscopy measurements also confirmed that such regions are oxygen deficient.

Original language	English
Pages (from-to)	L796-L797
Journal	Japanese Journal of Applied Physics
Volume	30
Issue number	5
DOIs	https://doi.org/10.1143/JJAP.30.L796
Publication status	Published - 1991 May
Externally published	Yes

Keywords

Color
Oxygen deficiency
Polarized optical microscopy
Raman spectroscopy
YBacuo

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.30.L796

Cite this

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abstract = "We have found that oxygen deficient regions in YBa2Cu3Ox superconductors exhibit different colors from that of the matrix under polarized light. When oxygen annealing was insufficient, large melt-grown YBaCuO crystals occasionally contained narrow bands exhibiting different colors where the twin structure was absent. Upon annealing in oxygen atmosphere, these banded regions disappeared, indicating that these regions are oxygen deficient. Raman spectroscopy measurements also confirmed that such regions are oxygen deficient.",

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AU - Murakami, Masato

AU - Yoshida, Masashi

AU - Fujimoto, Hiroyuki

AU - Gotoh, Satoshi

AU - Koshizuka, Naoki

AU - Tanaka, Shoji

PY - 1991/5

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AB - We have found that oxygen deficient regions in YBa2Cu3Ox superconductors exhibit different colors from that of the matrix under polarized light. When oxygen annealing was insufficient, large melt-grown YBaCuO crystals occasionally contained narrow bands exhibiting different colors where the twin structure was absent. Upon annealing in oxygen atmosphere, these banded regions disappeared, indicating that these regions are oxygen deficient. Raman spectroscopy measurements also confirmed that such regions are oxygen deficient.

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KW - Oxygen deficiency

KW - Polarized optical microscopy

KW - Raman spectroscopy

KW - YBacuo

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