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 |
| Externally published | Yes |
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Keywords
- Critical current density
- Nd-Sm solid solution
- Nd123
- Nd422
- Transition temperature
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Study of (Nd,Sm)422 solid solution and its effect on the melt process of Nd123 bulk superconductors. / Yoshioka, J.; Iida, K.; Murakami, Masato.
In: Physica C: Superconductivity and its Applications, Vol. 354, No. 1-4, 05.2001, p. 401-405.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study of (Nd,Sm)422 solid solution and its effect on the melt process of Nd123 bulk superconductors
AU - Yoshioka, J.
AU - Iida, K.
AU - Murakami, Masato
PY - 2001/5
Y1 - 2001/5
N2 - 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.
AB - 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.
KW - Critical current density
KW - Nd-Sm solid solution
KW - Nd123
KW - Nd422
KW - Transition temperature
UR - http://www.scopus.com/inward/record.url?scp=0035331148&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035331148&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(01)00140-X
DO - 10.1016/S0921-4534(01)00140-X
M3 - Article
VL - 354
SP - 401
EP - 405
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-4
ER -