We report on the 2Β°5T1 NMR (nuclear magnetic resonance) spectra of the title compounds below and above the superconducting transition temperature TΒ’. The TIO layer NMR spectra are dominated by chemical shifts corresponding to TI 3+ with a smaller additional positive Knight shift, whereas a "defect l
Electrical resistance, magnetoresistance, magnetisation and 205Tl NMR studies in the Tl-Ca-Ba-Cu-O system
β Scribed by A. Poddar; P. Mandal; K. Ghosh Ray; A.N. Das; B. Ghosh; P. Choudhury; S.K. Lahiri
- Book ID
- 103943490
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 323 KB
- Volume
- 159
- Category
- Article
- ISSN
- 0921-4534
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π SIMILAR VOLUMES
We found a series of superconducting phases in the T1-Ba-Ca-Cu-O system and determined the crystal structures of these superconducting phases by means of the X-ray powder diffraction method. All of these superconducting phases belong to the tetragonal symmetry. They have the same lattice constant a
Superconducting cuprates with the general stoichiometry (Tl, Hg) 2 (Ba, Sr) (Sr, Ca) 1 Cu 2 O 8Ψ were examined by X-ray powder di4raction, including Rietveld re5nement calculations. The aim was to obtain structural properties that could be related to the diamagnetic transition onset temperature (T c