THICK C-AXIS TEXTURED (TL,PB) (BA,SR)(2)CA2CU3O9/AG-0.37 SUPERCONDUCTING TAPES BY AN INK SPRAY-PYROLYSIS METHOD USING A TL-FREE PRECURSOR

被引：12

作者：

SCHULZ, DL ^{[1
]}

PARILLA, PA ^{[1
]}

GINLEY, DS ^{[1
]}

VOIGT, JA ^{[1
]}

ROTH, EP ^{[1
]}

机构：

[1] SANDIA NATL LABS,ALBUQUERQUE,NM 87185

来源：

APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 19期

关键词：

D O I：

10.1063/1.112711

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter we demonstrate a synthetic route to thick (5-20 mu m) highly c-axis textured, nearly phase-pure superconducting (Tl,Pb) (Ba,Sr)(2)Ca2Cu3O9/Ag-0.37 tapes. First, a Tl-free ink consisting of Pb0.5Ba0.4Sr1.6Ca2.0CU3.0O9/Ag-0.37 precursor powder in an ethanolic ethyl cellulose binder is sprayed onto a heated LaAlO3 substrate. After an intermediate oxygen anneal to remove the carbonaceous binder, a static 2-zone thallination anneal is performed to promote superconducting phase formation. Films exhibit excellent c-axis texturing as evidenced by x-ray diffraction theta/2 theta and rocking curve characterization with morphological evidence for partial melting by scanning electron microscopy. Electrical characterization of these films give T-c onset values of 106-115 K with T-c zero reached by 99-101 K and transport J(c(77 K)) UP to 2.9 X 10(4) A/cm(2). A mixed strong/weak-linked magnetic field dependence is observed for these films at 77 K and 0.4 T. (C) 1994 American Institute of Physics.

引用

页码：2472 / 2474

页数：3

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