Title :
Transport properties of bicrystal Josephson junctions in Y-Ba-Cu-O films grown by liquid phase epitaxy
Author :
Eltsev, Yuri F. ; Nakao, Koichi ; Yamada, Yasuji ; Hirabayashi, Izumi ; Ishimaru, Yoshihiro ; Tanabe, Keiichi ; Enomoto, Youichi ; Wen, Jianguo ; Koshizuka, Naoki
Author_Institution :
Superconductivity Res. Lab., Int. Superconductivity Technol. Center, Tokyo, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
We studied charge transport across 24°, 36°, 45° symmetrical and 45° asymmetrical grain boundaries (GB´s) in YBCO bicrystals grown by liquid phase epitaxy (LPE). We show that transport properties of symmetrical GB´s are similar to those in bicrystals formed by various physical vapour deposition (PVD) methods while for 45° asymmetrical GB´s, a difference between transport properties of LPE and PVD bicrystals has been found. In particular, in contrast to PVD bicrystals, selected LPE samples demonstrate regular magnetic interference patterns. In an agreement with transmission electron microscopy data, this result suggests better quality of 45° asymmetrical GB´s in LPE films
Keywords :
Josephson effect; barium compounds; bicrystals; grain boundaries; high-temperature superconductors; liquid phase epitaxial growth; superconducting epitaxial layers; transmission electron microscopy; yttrium compounds; LPE; TEM; Y-Ba-Cu-O films; YBCO bicrystals; YBa2Cu3O7; asymmetrical grain boundaries; bicrystal Josephson junctions; bicrystals; charge transport; liquid phase epitaxy; magnetic interference patterns; physical vapour deposition; symmetrical grain boundaries; transmission electron microscopy; transport properties; Atherosclerosis; Chemical vapor deposition; Epitaxial growth; Grain boundaries; Josephson junctions; Laboratories; Microstructure; Superconductivity; Telephony; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
