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The Tl-Ba-Ca-Cu-O superconducting ceramics containing Al2O3 (1989)

Itoh, T. ; Uchikawa, H.

Springer

Applied physics 48 (1989), S. 321-323

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ISSN: 1432-0630

Keywords: 74.70.-b ; 74.60.Mj

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract The Tl-Ba-Ca-Cu-O superconducting ceramics containing Al2O3 have been prepared utilizing the reaction, Tl2O2+BaCuO2+Ca2CuO3+A12O3 or Tl2O3+BaCuO2 +Ca2CuO3+AlCuO2.5. It is shown that the resulting ceramics show the superconductivity at temperatures over 100 K when the Al/Cu molar ratio is kept below 0.5. EPMA analyses revealed that there is always an Al2BaO4 layer between the superconducting Tl-Ba-Ca-Cu-O and Al2O3 phases, leading to the separation between the superconducting and A12O3 phases.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00618892

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