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Titolo:
EFFECT OF METAL CLUSTER IONS ON THE LOW-TEMPERATURE GROWTH OF YBA2CU3OY THIN-FILMS
Autore:
KANEKO N; KAWASAKI T; MOTOI T; YAMAMOTO K;
Indirizzi:
CANON INC,CANON RES CTR,5-1 MORINOSATO WAKAMIYA ATSUGI KANAGAWA 24301JAPAN
Titolo Testata:
Physica. C, Superconductivity
fascicolo: 3-4, volume: 221, anno: 1994,
pagine: 243 - 253
SICI:
0921-4534(1994)221:3-4<243:EOMCIO>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPERCONDUCTING FILMS; INSITU; DEPOSITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
N. Kaneko et al., "EFFECT OF METAL CLUSTER IONS ON THE LOW-TEMPERATURE GROWTH OF YBA2CU3OY THIN-FILMS", Physica. C, Superconductivity, 221(3-4), 1994, pp. 243-253

Abstract

Using the reactive ionized cluster beam method, the roles of Y, BaO(x), and Cu clusters in YBa2Cu3Oy (YBCO) thin-film growth are investigated. This method utilizes ionized and accelerated Y, BaO(x), and Cu clusters consisting of loosely coupled aggregates of 10(2)-10(3) atoms. It is found that, at substrate temperatures below 400-degrees-C, each ionized cluster has a different effect on the formation of YBCO. Namely, ionized and accelerated Cu and BaO(x) clusters with an average energy of less than approximately 2.0 eV significantly promote the oxidation of the YBCO films. In particular, the use of ionized BaO(x) clustersfacilitates crystal growth. On the other hand, ionized Y clusters exhibit an obviously negative effect on YBCO growth. These results suggest that it may be difficult to obtain completely ortho-I films in situ at substrate temperatures below 400-degrees-C because of the trade-offfor the effect of ionized Y clusters and the other two ones. At temperatures above 500-degrees-C, there is no significant observable difference between the films grown by this method and those grown using a conventional method. As a result, it seems that, at higher temperatures,YBCO film growth is dominated by the thermal energy supplied from a heated substrate.

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Documento generato il 07/08/20 alle ore 20:33:48