Abstract
We have studied the range of Nd-Sm solid solution in the (Nd1-x,Smx)4-2yBa2+2y Cu2-yOz system in the Nd123 matrix. X-ray diffraction studies for the sintered (Nd1-x,Smx)4-2yBa2+2y Cu2-yOz powders in air showed that the samples were a single phase 422 in the range of x = 0-0.3, showing that Sm substituted on Nd site in Nd422. It was also found that Sm is soluble up to x = 0.3 in (Nd1-x,Smx)3.6Ba2.4 Cu1.8Oz. We then fabricated Nd123/Nd422 bulk superconductors by melt processing, in which Nd123 powder is mixed with 20 mol% (Nd0.8,Sm0.2)3.6Ba2.4 Cu1.8Oz and 1 wt.% CeO2. The sample exhibited high Tc of 97 K and sharp superconducting transition when melt-processed under controlled oxygen partial pressure (PO2) of 0.01 atm.
| Original language | English |
|---|---|
| Pages (from-to) | 401-405 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 354 |
| Issue number | 1-4 |
| DOIs | |
| Publication status | Published - 2001 May 1 |
Keywords
- Critical current density
- Nd-Sm solid solution
- Nd123
- Nd422
- Transition temperature
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Cite this
Yoshioka, J., Iida, K., & Murakami, M. (2001). Study of (Nd,Sm)422 solid solution and its effect on the melt process of Nd123 bulk superconductors. Physica C: Superconductivity and its applications, 354(1-4), 401-405. https://doi.org/10.1016/S0921-4534(01)00140-X