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Zn doping in YBCO single crystal by the solute-rich liquid-crystal pulling method

Published online by Cambridge University Press:  31 January 2011

X. Yao ,
K. Ohtsu ,
S. Tajima ,
H. Zama ,
F. Wang  and
Y. Shiohara
X. Yao
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
K. Ohtsu
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
S. Tajima
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
H. Zama
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
F. Wang
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
Y. Shiohara
Affiliation:
Superconductivity Research Laboratory, ISTEC, 1–10–13 Shinonome Koto-ku, Tokyo 135, Japan
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Abstract

Zn-doped YBa2Cu3O6+δ (YBCO) single crystals were fabricated by the solute-rich liquid-crystal pulling (SRL-CP) method. The Zn content of x ranged from 0.0035–0.029 and almost uniformly distributed in YBa2(Cu1−xZnx)3O6+δ. There is a nearly linear relationship between the added Zn content in the liquid and the analyzed Zn content in the liquid/in the crystal. When the added Zn content Cl was 1.086 at. %, decreasing of growth temperature led to increasing growth rate. However, growth temperature had no obvious effect on the doped Zn content in the crystal Cs, the Zn content in the flux Cl, and the effective distribution ratio of k′. In addition, growth spirals on the grown crystal surface were observed by atomic force microscopy (AFM). X-ray Laue pattern and RBS measurements are indicative of good crystallinity of YBa2(Cu1−xZnx)3O6+δ. Critical temperatures of Tc changed from 89 to 57 K when the Zn content x ranged 0.0035 to 0.029 after appropriate oxygenation.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 5 , May 1996 , pp. 1120 - 1126
Copyright
Copyright © Materials Research Society 1996

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References

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