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YBa2Cu3O7-δ and Tl2Ba2CaCu2O8 thin films for microwave filters were synthesized by pulsed laser deposition and the two-step thalliation process. Substrate
quality requirements and the relation of thin film morphology, microstructure with microwave surface resistance were discussed. 相似文献
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Influences of Thalliation on the Morphology and Critical Temperature of Tl2Ba2CaCu2O8 Thin Films 下载免费PDF全文
Tl2Ba2CaCu2Ox(Tl-2212) thin films were prepared by the two-step technique.A precursor film was first prepared by the pulsed laser deposition method,and then experienced the incorporation of thalliation in a one-step or two-step annealing process.The experimental results show that the two-step annealing process produces dense and smooth films,and that the one-step annealing process produces a high critical temperature film of 101K,but the transition width is wide.Precursor films with homogeneous Ba2Ca1.3Cu2.1Ox composition are essential for producing high-quality Tl-2212 films. 相似文献
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