Use of cathodoluminescence microscopy to distinguish semiconducting from metallic phases in high Tc superconductors

J. H. Miller; J. D. Hunn; S. L. Holder; A. N. DiBianca; C. R. Bagnell

doi:10.1063/1.103275

Use of cathodoluminescence microscopy to distinguish semiconducting from metallic phases in high T_c superconductors

J. H. Miller, J. D. Hunn, S. L. Holder, A. N. DiBianca, C. R. Bagnell

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Abstract

We show that semiconducting and insulating metal-oxide phases emit substantially greater luminescence when irradiated with 10-30 keV electrons than metallic, candidate high T_c superconducting phases. The use of a cathodoluminescence (CL) detector in a scanning electron microscope to form high-resolution CL images of Y₂O₃, BaCO₃, Y₂BaCuO₅, oxygen-depleted YBa₂Cu ₃O_7-x(x>0.5), and oxygen-annealed YBa₂Cu₃O_7-x(x∼0) is reported. The spatial resolution obtained in CL micrographs of YBa ₂Cu₃O_7-x is found to be about 0.1 μm when the electron beam current is 190 nA. The use of CL microscopy in combination with energy-dispersive x-ray analysis may be a promising technique for identifying candidate superconducting phases of novel stoichiometry in complex multiphase samples.

Original language	English
Pages (from-to)	89-91
Number of pages	3
Journal	Applied Physics Letters
Volume	56
Issue number	1
DOIs	https://doi.org/10.1063/1.103275
State	Published - 1990
Externally published	Yes

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title = "Use of cathodoluminescence microscopy to distinguish semiconducting from metallic phases in high Tc superconductors",

abstract = "We show that semiconducting and insulating metal-oxide phases emit substantially greater luminescence when irradiated with 10-30 keV electrons than metallic, candidate high Tc superconducting phases. The use of a cathodoluminescence (CL) detector in a scanning electron microscope to form high-resolution CL images of Y2O3, BaCO3, Y2BaCuO5, oxygen-depleted YBa2Cu 3O7-x(x>0.5), and oxygen-annealed YBa2Cu3O7-x(x∼0) is reported. The spatial resolution obtained in CL micrographs of YBa 2Cu3O7-x is found to be about 0.1 μm when the electron beam current is 190 nA. The use of CL microscopy in combination with energy-dispersive x-ray analysis may be a promising technique for identifying candidate superconducting phases of novel stoichiometry in complex multiphase samples.",

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AU - Miller, J. H.

AU - Hunn, J. D.

AU - Holder, S. L.

AU - DiBianca, A. N.

AU - Bagnell, C. R.

PY - 1990

Y1 - 1990

N2 - We show that semiconducting and insulating metal-oxide phases emit substantially greater luminescence when irradiated with 10-30 keV electrons than metallic, candidate high Tc superconducting phases. The use of a cathodoluminescence (CL) detector in a scanning electron microscope to form high-resolution CL images of Y2O3, BaCO3, Y2BaCuO5, oxygen-depleted YBa2Cu 3O7-x(x>0.5), and oxygen-annealed YBa2Cu3O7-x(x∼0) is reported. The spatial resolution obtained in CL micrographs of YBa 2Cu3O7-x is found to be about 0.1 μm when the electron beam current is 190 nA. The use of CL microscopy in combination with energy-dispersive x-ray analysis may be a promising technique for identifying candidate superconducting phases of novel stoichiometry in complex multiphase samples.

AB - We show that semiconducting and insulating metal-oxide phases emit substantially greater luminescence when irradiated with 10-30 keV electrons than metallic, candidate high Tc superconducting phases. The use of a cathodoluminescence (CL) detector in a scanning electron microscope to form high-resolution CL images of Y2O3, BaCO3, Y2BaCuO5, oxygen-depleted YBa2Cu 3O7-x(x>0.5), and oxygen-annealed YBa2Cu3O7-x(x∼0) is reported. The spatial resolution obtained in CL micrographs of YBa 2Cu3O7-x is found to be about 0.1 μm when the electron beam current is 190 nA. The use of CL microscopy in combination with energy-dispersive x-ray analysis may be a promising technique for identifying candidate superconducting phases of novel stoichiometry in complex multiphase samples.

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Use of cathodoluminescence microscopy to distinguish semiconducting from metallic phases in high T_c superconductors

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