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Journal Article
Microstructure of Screen-printed (Tl0.5,Pb0.5)(Sr0.8,Ba0.2)2Ca2Cu3Oy Superconducting Films on Untextured Silver Substrate
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- Authors
- Bong-Jun Kim, Hyun-Tak Kim, Yoshio Matsui, Dae-Yong Jeong, Christian Deinhofer, Gerhard Gritzner
- Issue Date
- 2007-09
- Citation
- Physica C : Superconductivity, v.460-462, pp.736-737
- ISSN
- 0921-4534
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- Highly c-axis oriented (Tl0.5,Pb0.5)(Sr0.8,Ba0.2)2Ca2Cu3Oy films with a thickness of ~1.5 μm and ~4 μm were prepared by screen printing method on untextured silver substrates. Tl-1223 films have the critical temperatures around 116 K with transition widths, ?봗, of 2 K, The microstructures have been investigated by high-resolution transmission electron microscopy. Tl-1223 film deposited on well-polished Ag substrate shows large single domains in the lateral direction including secondary phases and intergrowth of Tl-1212, 2201 and 1234. From selected area electron diffraction (SAED) pattern, secondary phase is determined as BaCuO2, which plays an important role in flux pinning to improve magnetic properties. And the relationships between the domain size, alignment and the surface roughness are studied. © 2007 Elsevier B.V. All rights reserved.