Abstract
We report on a highly improved pinning performance in the melt-textured (Nd0.33 Eu0.33 Gd0.33) Ba2 Cu3 Oy +35 mol % Gd2 BaCu O5 (70 nm in size) composite doped by tiny amounts of nanometer-sized Mo O3 or Nb O3 particles. The doping led to a spontaneous formation of clouds with extremely small (≤10 nm) (Nd,Eu,Gd)2 BaCuX O5 particles, X=Mo,Nb. With an optimum content of Mo O3 and Nb O3, the self-field supercurrent at 77 K was twofold and threefold higher than before, respectively. At 65 K the supercurrent reached 700 kA cm2 with Mo and 925 kA cm2 with Nb at both 0 and 4.5 T, and the self-field current at 90 K was 100 A cm2 in the Nb-doped sample, which is a value high enough for a safe levitation.
| Original language | English |
|---|---|
| Article number | 162512 |
| Journal | Applied Physics Letters |
| Volume | 92 |
| Issue number | 16 |
| DOIs | |
| Publication status | Published - 2008 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Record flux pinning in melt-textured NEG-123 doped by Mo and Nb nanoparticles. / Miryala, Muralidhar; Sakai, Naomichi; Jirsa, M.; Murakami, Masato; Hirabayashi, I.
In: Applied Physics Letters, Vol. 92, No. 16, 162512, 2008.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Record flux pinning in melt-textured NEG-123 doped by Mo and Nb nanoparticles
AU - Miryala, Muralidhar
AU - Sakai, Naomichi
AU - Jirsa, M.
AU - Murakami, Masato
AU - Hirabayashi, I.
PY - 2008
Y1 - 2008
N2 - We report on a highly improved pinning performance in the melt-textured (Nd0.33 Eu0.33 Gd0.33) Ba2 Cu3 Oy +35 mol % Gd2 BaCu O5 (70 nm in size) composite doped by tiny amounts of nanometer-sized Mo O3 or Nb O3 particles. The doping led to a spontaneous formation of clouds with extremely small (≤10 nm) (Nd,Eu,Gd)2 BaCuX O5 particles, X=Mo,Nb. With an optimum content of Mo O3 and Nb O3, the self-field supercurrent at 77 K was twofold and threefold higher than before, respectively. At 65 K the supercurrent reached 700 kA cm2 with Mo and 925 kA cm2 with Nb at both 0 and 4.5 T, and the self-field current at 90 K was 100 A cm2 in the Nb-doped sample, which is a value high enough for a safe levitation.
AB - We report on a highly improved pinning performance in the melt-textured (Nd0.33 Eu0.33 Gd0.33) Ba2 Cu3 Oy +35 mol % Gd2 BaCu O5 (70 nm in size) composite doped by tiny amounts of nanometer-sized Mo O3 or Nb O3 particles. The doping led to a spontaneous formation of clouds with extremely small (≤10 nm) (Nd,Eu,Gd)2 BaCuX O5 particles, X=Mo,Nb. With an optimum content of Mo O3 and Nb O3, the self-field supercurrent at 77 K was twofold and threefold higher than before, respectively. At 65 K the supercurrent reached 700 kA cm2 with Mo and 925 kA cm2 with Nb at both 0 and 4.5 T, and the self-field current at 90 K was 100 A cm2 in the Nb-doped sample, which is a value high enough for a safe levitation.
UR - http://www.scopus.com/inward/record.url?scp=42549110438&partnerID=8YFLogxK
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U2 - 10.1063/1.2908929
DO - 10.1063/1.2908929
M3 - Article
VL - 92
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 16
M1 - 162512
ER -