SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS
Superconductivity up to 105K has been observed in the TlVSrCaCuO and TlVSrCaYCuO systems using both electrical resistivity and magnetisation measurements. From the results of X-ray diffraction, energy dispersive spectrometry and selected area electron diffraction, we identify the phases responsible...
| Autores principales: | , , , |
|---|---|
| Formato: | Journal article |
| Lenguaje: | English |
| Publicado: |
1990
|
| _version_ | 1826294374234849280 |
|---|---|
| author | Liu, R Zhou, W Janes, R Edwards, P |
| author_facet | Liu, R Zhou, W Janes, R Edwards, P |
| author_sort | Liu, R |
| collection | OXFORD |
| description | Superconductivity up to 105K has been observed in the TlVSrCaCuO and TlVSrCaYCuO systems using both electrical resistivity and magnetisation measurements. From the results of X-ray diffraction, energy dispersive spectrometry and selected area electron diffraction, we identify the phases responsible for the superconductivity to be (Tl0.72V0.28)Sr2CaCu2Oy (with Tc=80K) and (Tl0.72V0.28)Sr2(Ca0.86Y0.14)Cu2Oy (with Tc=105K). We propose that the partial substitution of vanadium for thallium in the crystal lattice stabilizes the TlSr2CaCu2Oy phase and enhances superconductivity up to 80K. Importantly, 20% of Y3+ replacement of Ca2+ sites in the (Tl, V)Sr2CaCu2Oy compound reduces the excess hole concentration and increases superconductivity by about 20K. © 1990. |
| first_indexed | 2024-03-07T03:44:39Z |
| format | Journal article |
| id | oxford-uuid:bf0b4279-39e6-47e6-8c2d-9fbb72d0e43c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:44:39Z |
| publishDate | 1990 |
| record_format | dspace |
| spelling | oxford-uuid:bf0b4279-39e6-47e6-8c2d-9fbb72d0e43c2022-03-27T05:44:30ZSUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMSJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:bf0b4279-39e6-47e6-8c2d-9fbb72d0e43cEnglishSymplectic Elements at Oxford1990Liu, RZhou, WJanes, REdwards, PSuperconductivity up to 105K has been observed in the TlVSrCaCuO and TlVSrCaYCuO systems using both electrical resistivity and magnetisation measurements. From the results of X-ray diffraction, energy dispersive spectrometry and selected area electron diffraction, we identify the phases responsible for the superconductivity to be (Tl0.72V0.28)Sr2CaCu2Oy (with Tc=80K) and (Tl0.72V0.28)Sr2(Ca0.86Y0.14)Cu2Oy (with Tc=105K). We propose that the partial substitution of vanadium for thallium in the crystal lattice stabilizes the TlSr2CaCu2Oy phase and enhances superconductivity up to 80K. Importantly, 20% of Y3+ replacement of Ca2+ sites in the (Tl, V)Sr2CaCu2Oy compound reduces the excess hole concentration and increases superconductivity by about 20K. © 1990. |
| spellingShingle | Liu, R Zhou, W Janes, R Edwards, P SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title | SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title_full | SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title_fullStr | SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title_full_unstemmed | SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title_short | SUPERCONDUCTIVITY UP TO 105K IN THE NEW HIGH-TC TL-V-SR-CA-CU-O AND TL-V-SR-CA-Y-CU-O SYSTEMS |
| title_sort | superconductivity up to 105k in the new high tc tl v sr ca cu o and tl v sr ca y cu o systems |
| work_keys_str_mv | AT liur superconductivityupto105kinthenewhightctlvsrcacuoandtlvsrcaycuosystems AT zhouw superconductivityupto105kinthenewhightctlvsrcacuoandtlvsrcaycuosystems AT janesr superconductivityupto105kinthenewhightctlvsrcacuoandtlvsrcaycuosystems AT edwardsp superconductivityupto105kinthenewhightctlvsrcacuoandtlvsrcaycuosystems |