Two series of Sml+xBa2\_xfU30y samples were prepared, both exhibiting a change from orthorhombic to tetragonal structure. The first is a series of solid solution of increasing Sm/Ba ratio, the second is a series of exact "123" cation stoichiometry with lowering oxygen content. Several quantities, su
Tetragonal-orthorhombic transition and superconductivity of RE1+xBa2−xCu3Oy (RE=Nd or Sm)
✍ Scribed by Shu Li; Martha Greenblatt
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 98 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0167-2738
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The specific heats ofSm~ + ~Ba2\_xCU3Oy solid solution of orthorhombic and tetragonal structure were measured in the temperature range 80-300 K. The data were analyzed in the framework of the Debye model with dilatation correction. The tendency to lower the high-temperature limit of the Debye temper
The Tc of Nd 1÷xBa2\_xCuaOy (0.1 ~<x~ 0.6) has been increased by synthesizing and annealing the compounds in 200 bar oxygen pressure. The oxygen content, y, increases to compensate the effect of Nd a+ substitution and the formal average copper valence (FACV) remains unchanged at ~ 2.3 throughout the
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