TY - JOUR
T1 - Influence of Processing Conditions on the Microstructure and Physical Properties in Infiltration Growth Processed Mixed REBCO Bulk Superconductors
AU - Naik, S. Pavan Kumar
AU - Muralidhar, Miryala
AU - Murakami, Masato
N1 - Funding Information:
Manuscript received January 20, 2018; revised August 16, 2018; accepted August 31, 2018. Date of publication October 9, 2018; date of current version January 8, 2019. This work was supported in part by Shibaura Institute of Technology (SIT) Research Center for Green Innovation and Grant-in-Aid FD research budget code: 112704. This paper was recommended by Associate Editor P. Diko. (Corresponding author: S. Pavan Kumar Naik.) The authors are with the Superconducting Materials Laboratory, Shibaura Institute of Technology, Koto-ku 135-8548, Japan (e-mail:,spavankumarnaik@ yahoo.in; miryala26@gmail.com; masatomu@shibaura-it.ac.jp).
Publisher Copyright:
© 2002-2011 IEEE.
PY - 2019/4
Y1 - 2019/4
N2 - In this paper, we investigated the effect of liquid phase (LP) source mass on crystal growth, structure, microstructure, and magnetic properties of infiltration growth processed (Gd, Dy)Ba2Cu3\text{O}_{{\rm{7}-\rm{x}}} ((Gd, Dy)BCO) bulk superconductors. The mixture of Er-123 + Ba3Cu5O8 (035) was chosen as the LP source and the ratio of 211: LP mass (wt%) was varied between 1:1 and 1:1.5. All samples were crystallized in (00l) direction; however, the supply of excess liquids for (Gd, Dy)BCO sample exhibited nonsuperconducting phases. As LP mass increased, the nonsuperconducting inclusions had refined largely due to the availability of a sufficient amount of liquids for peritectic reaction. The 211: LP mass ratio of 1:1.4 was found to be the best relation. The onset of superconducting critical temperature was not influenced by the LP mass. However, the critical current density was gradually improved with the increase in LP mass. The possibilities for further enhancement of physical properties are discussed.
AB - In this paper, we investigated the effect of liquid phase (LP) source mass on crystal growth, structure, microstructure, and magnetic properties of infiltration growth processed (Gd, Dy)Ba2Cu3\text{O}_{{\rm{7}-\rm{x}}} ((Gd, Dy)BCO) bulk superconductors. The mixture of Er-123 + Ba3Cu5O8 (035) was chosen as the LP source and the ratio of 211: LP mass (wt%) was varied between 1:1 and 1:1.5. All samples were crystallized in (00l) direction; however, the supply of excess liquids for (Gd, Dy)BCO sample exhibited nonsuperconducting phases. As LP mass increased, the nonsuperconducting inclusions had refined largely due to the availability of a sufficient amount of liquids for peritectic reaction. The 211: LP mass ratio of 1:1.4 was found to be the best relation. The onset of superconducting critical temperature was not influenced by the LP mass. However, the critical current density was gradually improved with the increase in LP mass. The possibilities for further enhancement of physical properties are discussed.
KW - Critical current density
KW - X-ray diffraction
KW - microstructure
KW - superconducting materials
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U2 - 10.1109/TASC.2018.2874417
DO - 10.1109/TASC.2018.2874417
M3 - Article
AN - SCOPUS:85054634106
SN - 1051-8223
VL - 29
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 3
M1 - 8486706
ER -