Infrared properties of single crystal MgAl2O4, a substrate for high-temperature superconducting films

T. R. Yang; H. E. Horng; H. C. Yang; L. J. Jang; W. N. Kang; S. S. Yom

doi:10.1016/0921-4534(94)91947-X

Infrared properties of single crystal MgAl₂O₄, a substrate for high-temperature superconducting films

T. R. Yang^*, H. E. Horng, H. C. Yang, L. J. Jang, W. N. Kang, S. S. Yom

^*Corresponding author for this work

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

8 Citations (Scopus)

Abstract

We study and analyze the infrared properties of single crystal MgAl₂O₄, an important substrate for high-T_c superconducting films, from 10 to 300 cm^-1 and 4.2 to 350K. A number of infrared active modes between 20-150 cm^-1 have been observed. Some of these modes such as 68, 72, 82, 103 cm^-1 are consist with the earlier reports by inelastic neutron scattering method and characterized as transverse acoustic phonon modes. Our measurements also shows extra modes such as 35, 44, 56, 75, 82 cm^-1. The spectra in the far-infrared region has about 60% transmission at 4.2K and opaque above 180cm^-1. The transparent properties of single crystal MgAl₂O₄ in far infrared region in liquid helium temperature is especially good for HTSC thin films substrate.

Original language	English
Pages (from-to)	1445-1446
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	235-240
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(94)91947-X
Publication status	Published - 1994 Dec

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Infrared properties of single crystal MgAl2O4, a substrate for high-temperature superconducting films",

abstract = "We study and analyze the infrared properties of single crystal MgAl2O4, an important substrate for high-Tc superconducting films, from 10 to 300 cm-1 and 4.2 to 350K. A number of infrared active modes between 20-150 cm-1 have been observed. Some of these modes such as 68, 72, 82, 103 cm-1 are consist with the earlier reports by inelastic neutron scattering method and characterized as transverse acoustic phonon modes. Our measurements also shows extra modes such as 35, 44, 56, 75, 82 cm-1. The spectra in the far-infrared region has about 60% transmission at 4.2K and opaque above 180cm-1. The transparent properties of single crystal MgAl2O4 in far infrared region in liquid helium temperature is especially good for HTSC thin films substrate.",

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AU - Yang, T. R.

AU - Horng, H. E.

AU - Yang, H. C.

AU - Jang, L. J.

AU - Kang, W. N.

AU - Yom, S. S.

PY - 1994/12

Y1 - 1994/12

N2 - We study and analyze the infrared properties of single crystal MgAl2O4, an important substrate for high-Tc superconducting films, from 10 to 300 cm-1 and 4.2 to 350K. A number of infrared active modes between 20-150 cm-1 have been observed. Some of these modes such as 68, 72, 82, 103 cm-1 are consist with the earlier reports by inelastic neutron scattering method and characterized as transverse acoustic phonon modes. Our measurements also shows extra modes such as 35, 44, 56, 75, 82 cm-1. The spectra in the far-infrared region has about 60% transmission at 4.2K and opaque above 180cm-1. The transparent properties of single crystal MgAl2O4 in far infrared region in liquid helium temperature is especially good for HTSC thin films substrate.

AB - We study and analyze the infrared properties of single crystal MgAl2O4, an important substrate for high-Tc superconducting films, from 10 to 300 cm-1 and 4.2 to 350K. A number of infrared active modes between 20-150 cm-1 have been observed. Some of these modes such as 68, 72, 82, 103 cm-1 are consist with the earlier reports by inelastic neutron scattering method and characterized as transverse acoustic phonon modes. Our measurements also shows extra modes such as 35, 44, 56, 75, 82 cm-1. The spectra in the far-infrared region has about 60% transmission at 4.2K and opaque above 180cm-1. The transparent properties of single crystal MgAl2O4 in far infrared region in liquid helium temperature is especially good for HTSC thin films substrate.

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Infrared properties of single crystal MgAl₂O₄, a substrate for high-temperature superconducting films

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