EVIDENCE OF MOBILE Ag AND GROWTH MECHANISM OF YBa2Cu3O7-y FILMS DEPOSITED ON CUBE TEXTURED Ag TAPE BY CHEMICAL VAPOR DEPOSITION

YBa2Cu3O7-y (YBCO) films were prepared on {100} < 001 > cube textured Ag tape (CUTE-Ag tape) by MOCVD using a liquid state metal organic (MO) source. Numerous spiral steps accompanied by screw dislocations were observed, and many particles were observed on the terrace surface of the spiral ste...

Full description

Saved in:
Bibliographic Details
Published inJpn.J.Appl.Phys ,Part 1. Vol. 39, no. 4A, pp. 1719-1720. 2000 Vol. 39; no. 4A; pp. 1719 - 1720
Main Authors Hasegawa, M, Yoshida, Y, Iwata, M, Akata, H, Higashiyama, K, Takai, Y
Format Journal Article
LanguageEnglish
Published 2000
Online AccessGet full text

Cover

More Information
Summary:YBa2Cu3O7-y (YBCO) films were prepared on {100} < 001 > cube textured Ag tape (CUTE-Ag tape) by MOCVD using a liquid state metal organic (MO) source. Numerous spiral steps accompanied by screw dislocations were observed, and many particles were observed on the terrace surface of the spiral steps by AFM. Authors observed a change in surface morphology before and after heat treatment in vacuum at 550 C. After heat treatment, these particles became smaller and concentrated at the edge of the spiral steps. Authors confirmed by SAM that the main composition of these particles was Ag. Authors propose a growth mechanism on a Ag substrate in which Ag segregates to the surface and acts as surfactant for YBCO growth. 10 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-4922
DOI:10.1143/jjap.39.1719