TY - JOUR
T1 - In situ observation of crystal growth process of YBCO superconductive oxide with an external electric field
AU - Huang, Xinming
AU - Uda, Satoshi
AU - Yao, Xin
AU - Koh, Shinji
N1 - Funding Information:
This work was supported in part by Grants-in-Aid for Scientific Research (17360002) from the Ministry of Education, Science, Sports and Culture, the Mitsubishi Foundation and also the Nano-Materials Project of IMR, Tohoku University. The authors deeply thank Mr. Murakami of IMR, Tohoku University for the measurement of EPMA and X-ray diffraction. The authors also deeply acknowledge Prof. Kuribayashi and Dr. Nagashio of Institute of Space and Astronautical Sciences, Japan Aerospace Exploration Agency for their fruitful discussion.
PY - 2006/9/4
Y1 - 2006/9/4
N2 - In situ observation of crystal growth process of YBCO superconductive oxide under an external electric field has been carried out. Nucleation and growth processes of Y123 (YBa2Cu3O7-x) crystals from liquid+Y211 (Y2BaCuO5) on MgO (1 0 0) substrate through a peritectic reaction were observed. A DTA system with in situ observation and external electric field imposition mechanism was specially designed for measuring the peritectic temperature. It was found that the equilibrium peritectic temperature was 1012±0.5 °C, which was almost the same as reported in literature, and an external electric field did not affect the peritectic temperature. However, an external electric field retarded nucleation process of Y123 although it did not affect the growth kinetics. The retardation resulted from an increase of critical Gibbs energy for nucleation due to an external field.
AB - In situ observation of crystal growth process of YBCO superconductive oxide under an external electric field has been carried out. Nucleation and growth processes of Y123 (YBa2Cu3O7-x) crystals from liquid+Y211 (Y2BaCuO5) on MgO (1 0 0) substrate through a peritectic reaction were observed. A DTA system with in situ observation and external electric field imposition mechanism was specially designed for measuring the peritectic temperature. It was found that the equilibrium peritectic temperature was 1012±0.5 °C, which was almost the same as reported in literature, and an external electric field did not affect the peritectic temperature. However, an external electric field retarded nucleation process of Y123 although it did not affect the growth kinetics. The retardation resulted from an increase of critical Gibbs energy for nucleation due to an external field.
KW - A1. Crystal growth
KW - A1. External electric field
KW - A1. Nucleation
KW - A1. Peritectic temperature
KW - B1. YBCO
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U2 - 10.1016/j.jcrysgro.2006.06.021
DO - 10.1016/j.jcrysgro.2006.06.021
M3 - Article
AN - SCOPUS:33947114861
VL - 294
SP - 420
EP - 426
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 2
ER -