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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hamdan, N.M. |
| Copyright Year | 2002 |
| Abstract | Resistivity, DC magnetization and X-ray diffraction measurements were performed on 6 sample with nominal composition (Tl/sub 0.5/Pb/sub 0.5/)Sr/sub 2-x/Ce/sub x/Ca/sub 2/Cu/sub 3/O/sub y/, with x=0.0, 0.1, 0.2, 0.3, 0.4 and 0.5. As cerium content was increased, the transition temperature increased up to about 6 K when x=0.1. The phase diagram of the onset transition temperature versus Ce content reflects the expected behavior as the hole concentration in the Cu-O planes is expected to decrease with increasing x, passing from overdoped through optimally doped to an underdoped state for higher values of Ce/sup 4+/ replacing Sr/sup 2+/ atoms. Magnetization measurements at 4 K, in cyclic field /spl plusmn/9 Tesla, on the other hand, showed that the critical current density of the samples decreased as Ce content was increased for all values x. It also showed the existence of the superconducting phase up to x=0.5, which was not detectable by resistivity measurements. X-ray diffraction measurements, indicate that Ce enters the structure of the Tl-1223 phase, and hence affect its superconducting properties as it changes the charge carrier concentration in the Cu-O planes. |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 1170 |
| Ending Page | 1173 |
| Page Count | 4 |
| File Size | 283032 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 10 |
| Issue Number | 1 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2000-03-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetic properties Superconducting transition temperature Magnetization X-ray diffraction Strontium Current measurement Magnetic field measurement Superconducting magnets Conductivity Performance evaluation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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