DocumentCode :
1076473
Title :
Control of In-Plane-Orientation of Bi-2212 Thin Films Prepared by the Metal-Organic Decomposition Method
Author :
Uchiyama, Tetsuji ; Uchida, Takashi
Author_Institution :
Tokyo Inst. of Technol., Tokyo
Volume :
17
Issue :
2
fYear :
2007
fDate :
6/1/2007 12:00:00 AM
Firstpage :
3455
Lastpage :
3458
Abstract :
We have prepared Bi2Sr2CaCu2Ox (Bi-2212) thin films on MgO (100) substrates by a metal-organic decomposition (MOD) method for applications in the high frequency range. The lattice mismatch in the ab-plane between Bi-2212 and MgO is 9.2%, and it has been reported that the in-plane orientation contained small fractions of rotation angle eta ap plusmn12deg (i.e. [100] of Bi-2212 // [510] of MgO) in addition to cube-on-cube textured growth. In order to prevent these fractions, we fabricated a SrTiO3 (STO) buffer layer on the MgO substrate by MOD because the lattice mismatch between STO and Bi-2212 (2.1%) is very suitable. The in-plane orientations of the STO thin film fabricated on the MgO substrate and the Bi-2212 thin film fabricated on the STO buffer layer were determined by an X-ray diffractometer with four axes. The Bi-2212 thin film on the STO buffer layer showed cube-on-cube textured growth with no fractions.
Keywords :
MOCVD; X-ray diffraction; bismuth compounds; buffer layers; calcium compounds; high-temperature superconductors; strontium compounds; superconducting thin films; Bi2Sr2CaCu2O8 - System; MgO (100) substrates; MgO - Surface; X-ray on diffractometer; buffer layer; cube-on-cube textured growth; in-plane-orientation; lattice mismatch; metal-organic decomposition; rotation angle; thin films; Buffer layers; Dielectric substrates; Dielectric thin films; Frequency; High temperature superconductors; Lattices; Sputtering; Superconducting films; Superconducting thin films; Transistors; ${rm SrTiO}_{3}$ buffer layer; ${rm Bi}_{2}{rm Sr}_{2}{rm CaCu}_{2}{rm O}_{x}$ thin film; in-plane-orientation; metal-organic decomposition method;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2007.899411
Filename :
4278308
Link To Document :
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