Synthesis of thin superconducting HgBa2CaCu2O6+δ films by post-annealing of laser-ablated precursors
Superconducting HgBa2CaCu2O6+δ (Hg-1212) thin films have been prepared by laser ablation followed by post-annealing at high temperatures. Two synthesis methods were investigated, using (1) direct reaction of Hg–Ba–Ca–Cu–O precursor films in a Hg-controlled ambience, and (2) thermal diffusion of Hg i...
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| Published in: | Journal of materials research Vol. 13; no. 3; pp. 557 - 564 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
New York, USA
Cambridge University Press
01-03-1998
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| Online Access: | Get full text |
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| Summary: | Superconducting HgBa2CaCu2O6+δ (Hg-1212) thin films have been prepared by laser ablation followed by post-annealing at high temperatures. Two synthesis methods were investigated, using (1) direct reaction of Hg–Ba–Ca–Cu–O precursor films in a Hg-controlled ambience, and (2) thermal diffusion of Hg into Ba–Ca–Cu–O precursor films in a controlled atmosphere containing both Hg- and Tl-bearing species. Effects of the annealing temperature, time, and bulk material composition on the Hg-1212 film and residual impurities are presented. Surface morphologies, growth defects, and transport properties of Hg-1212 on SrTiO3 substrates are discussed. Formation of Hg-1212 films on MgO and LaAlO3 substrates is briefly described. |
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| Bibliography: | istex:0307C8546D6C5CE1E93942A2846A2458DD949949 ArticleID:04308 PII:S0884291400043089 ark:/67375/6GQ-2ZSL500D-W ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 0884-2914 2044-5326 |
| DOI: | 10.1557/JMR.1998.0071 |