Order, disorder and superconductivity in FeSr2YCu2O6+δ
✍ Scribed by H. Fujii; Y. Mihara; T. Mochiku; Y. Hata; K. Kadowaki
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 579 KB
- Volume
- 415
- Category
- Article
- ISSN
- 0921-4534
No coin nor oath required. For personal study only.
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FeSr 2 YCu 2 O 6+d with tetragonal Ba 2 YCu 3 O 6+d -type structure exhibits superconductivity around 60 K, only when it is annealed in reduced atmosphere and subsequently in oxidized atmosphere. However, FeSr 2 NdCu 2 O 6+d with the substitution of lanthanoid with large ionic radius for Y do not ex
From X-ray diffraction (XRD) data, AlSr 2 YCu 2 O 7 phase shows a tetragonal unit cell and space group P4/mmm, with lattice parameters a ؍ b)5(268.3؍ A > and c ؍ 11.095(5) A > . From selected area electron diffraction (SAED) and high-resolution transmission electron microscopy (HRTEM) studies,