Gippius, A. A. ; Morozova, E. N. ; Antipov, E. V. ; Abakumov, A. M. ; Rozova, M. G. ; Luders, K. ; Hoffmann, W. ; Buntkowsky, G. ; Klein, O. (2000)
Magnetic flux dynamics and structural features in fluorinated HgBa2CuO4 as probed by F-19 NMR.
In: Physical Review B, 61 (21)
doi: 10.1103/PhysRevB.61.14370
Article
Abstract
F-19 NMR spectra and spin-lattice relaxation rates have been measured on two powder HgBa2CuO4Fx samples. The results combined with our neutron powder-diffraction data A. M. Abakumov rt al., Phys. Rev. Lett. 80, 385 (1998) confirm that fluorine atoms can be successfully incorporated in the lattice of superconducting Hg-1201 phase in the nonstoichiometric O3 site. Partial occupation of another oxygen position by fluorine atoms reveals to be possible with the increase of F content. The temperature dependence of the F-19 NMR linewidth reveals the crossover at 35 K in the magnetic-flux line structure between the low-temperature latticelike regime and high-temperature "melted" regime. For the 1/T-1 temperature dependence a maximum has been found at 65 K indicating the strong influence of magnetic-flux line motion on the F-19 spin-lattice relaxation rate.
| Item Type: | Article |
|---|---|
| Erschienen: | 2000 |
| Creators: | Gippius, A. A. ; Morozova, E. N. ; Antipov, E. V. ; Abakumov, A. M. ; Rozova, M. G. ; Luders, K. ; Hoffmann, W. ; Buntkowsky, G. ; Klein, O. |
| Type of entry: | Bibliographie |
| Title: | Magnetic flux dynamics and structural features in fluorinated HgBa2CuO4 as probed by F-19 NMR |
| Language: | English |
| Date: | 2000 |
| Journal or Publication Title: | Physical Review B |
| Volume of the journal: | 61 |
| Issue Number: | 21 |
| DOI: | 10.1103/PhysRevB.61.14370 |
| Abstract: | F-19 NMR spectra and spin-lattice relaxation rates have been measured on two powder HgBa2CuO4Fx samples. The results combined with our neutron powder-diffraction data A. M. Abakumov rt al., Phys. Rev. Lett. 80, 385 (1998) confirm that fluorine atoms can be successfully incorporated in the lattice of superconducting Hg-1201 phase in the nonstoichiometric O3 site. Partial occupation of another oxygen position by fluorine atoms reveals to be possible with the increase of F content. The temperature dependence of the F-19 NMR linewidth reveals the crossover at 35 K in the magnetic-flux line structure between the low-temperature latticelike regime and high-temperature "melted" regime. For the 1/T-1 temperature dependence a maximum has been found at 65 K indicating the strong influence of magnetic-flux line motion on the F-19 spin-lattice relaxation rate. |
| Uncontrolled Keywords: | different oxygen-content spin-lattice relaxation y-89 nmr irreversibility line superconductors yba2cu4o8 vortices |
| Divisions: | 07 Department of Chemistry 07 Department of Chemistry > Physical Chemistry |
| Date Deposited: | 27 Oct 2014 20:41 |
| Last Modified: | 12 Jul 2023 08:07 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum