An X-ray Powder Diffraction Study of Sr2LnTaCu2O8, Ln = Nd, Sm, Eu, Gd
✍ Scribed by Grzeta, B. ;Toraya, H. ;Brničević, N. ;Basic, I. ;Planinić, P.
- Book ID
- 114501027
- Publisher
- International Union of Crystallography
- Year
- 1996
- Tongue
- English
- Weight
- 893 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0021-8898
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📜 SIMILAR VOLUMES
A novel series of nickelates described by the formula Tl(Ln 2 Sr 2 )Ni 2 O 9 , Ln ؍ La, Pr, Nd, Sm, Eu, and Gd, have been synthesized and their structures determined using both powder X-ray di4raction and powder neutron di4raction. The materials are isostructural with the superconducting cuprate,
## Abstract The title compounds crystallize with the scheelite‐type structure in the space group I4~1~/a for Ln: La—Gd and with the wolframite structure in the space group P2/n for Ln: Dy—Lu and Y.
The present work reports new features of an X-ray diffraction pattern from Bi-Sr-Ca-Cu-0 (2212). The crystal had the orthorhombic cell with the lattice parameters: a= 5.407 A, b= 5.410 i\, ~~30.762 A, wave vectors of modulation q'= +S b\*+c\*, where 6~0.2 1, A new observation is diffuse spots locate