Gold substitution in mercury cuprate superconductors
By using the high-pressure high-temperature technique, we succeeded in substituting in the mercury cuprate superconductors up to about 40% of mercury by gold. The samples were studied by X-ray and neutron powder diffraction, electron microscopy, energy dispersive spectroscopy. AC suceptibility measu...
| मुख्य लेखकों: | , , , , , , , |
|---|---|
| स्वरूप: | Journal article |
| प्रकाशित: |
1996
|
| _version_ | 1826299779637837824 |
|---|---|
| author | Bordet, P Le Floch, S Capponi, J Chaillout, C Gorius, M Marezio, M Tholence, J Radaelli, P |
| author_facet | Bordet, P Le Floch, S Capponi, J Chaillout, C Gorius, M Marezio, M Tholence, J Radaelli, P |
| author_sort | Bordet, P |
| collection | OXFORD |
| description | By using the high-pressure high-temperature technique, we succeeded in substituting in the mercury cuprate superconductors up to about 40% of mercury by gold. The samples were studied by X-ray and neutron powder diffraction, electron microscopy, energy dispersive spectroscopy. AC suceptibility measurements were also performed. The experimental data obtained for the Au substituted Hg-1223 compound indicate that the substitution leads to overdoping of the CuO2 layers, with a progressive decrease of cell parameters and Tc with increasing gold content. Taking into account these results, we used gold substitution to increase Tc of a Hg-1245 sample up to 110 K. The corresponding unsubstituted samples are normally obtained by the high-pressure high-temperature technique in an underdoped state with a Tc around 100 K. |
| first_indexed | 2024-03-07T05:07:08Z |
| format | Journal article |
| id | oxford-uuid:da4f2efd-dd75-4b8e-860e-d076dba82f1e |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:07:08Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:da4f2efd-dd75-4b8e-860e-d076dba82f1e2022-03-27T09:02:24ZGold substitution in mercury cuprate superconductorsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:da4f2efd-dd75-4b8e-860e-d076dba82f1eSymplectic Elements at Oxford1996Bordet, PLe Floch, SCapponi, JChaillout, CGorius, MMarezio, MTholence, JRadaelli, PBy using the high-pressure high-temperature technique, we succeeded in substituting in the mercury cuprate superconductors up to about 40% of mercury by gold. The samples were studied by X-ray and neutron powder diffraction, electron microscopy, energy dispersive spectroscopy. AC suceptibility measurements were also performed. The experimental data obtained for the Au substituted Hg-1223 compound indicate that the substitution leads to overdoping of the CuO2 layers, with a progressive decrease of cell parameters and Tc with increasing gold content. Taking into account these results, we used gold substitution to increase Tc of a Hg-1245 sample up to 110 K. The corresponding unsubstituted samples are normally obtained by the high-pressure high-temperature technique in an underdoped state with a Tc around 100 K. |
| spellingShingle | Bordet, P Le Floch, S Capponi, J Chaillout, C Gorius, M Marezio, M Tholence, J Radaelli, P Gold substitution in mercury cuprate superconductors |
| title | Gold substitution in mercury cuprate superconductors |
| title_full | Gold substitution in mercury cuprate superconductors |
| title_fullStr | Gold substitution in mercury cuprate superconductors |
| title_full_unstemmed | Gold substitution in mercury cuprate superconductors |
| title_short | Gold substitution in mercury cuprate superconductors |
| title_sort | gold substitution in mercury cuprate superconductors |
| work_keys_str_mv | AT bordetp goldsubstitutioninmercurycupratesuperconductors AT leflochs goldsubstitutioninmercurycupratesuperconductors AT capponij goldsubstitutioninmercurycupratesuperconductors AT chailloutc goldsubstitutioninmercurycupratesuperconductors AT goriusm goldsubstitutioninmercurycupratesuperconductors AT mareziom goldsubstitutioninmercurycupratesuperconductors AT tholencej goldsubstitutioninmercurycupratesuperconductors AT radaellip goldsubstitutioninmercurycupratesuperconductors |