Infrared properties of single crystal MgAl 2 O 4 , a substrate for high-temperature superconducting films

Tzuen-Rong Yang, Herng-Er Horng, Hong-Chang Yang, L. J. Jang, W. N. Kang, S. S. Yom

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

We study and analyze the infrared properties of single crystal MgAl 2 O 4 , 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 MgAl 2 O 4 in far infrared region in liquid helium temperature is especially good for HTSC thin films substrate.

原文英語
頁(從 - 到)1445-1446
頁數2
期刊Physica C: Superconductivity and its applications
235-240
發行號PART 2
DOIs
出版狀態已發佈 - 1994 一月 1

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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