Abstract
The effects of the additives of 0.005-0, 3mol of CaCO3(CaO), SrO, CaF 2 and SrF 2 to 2mol of the '2223' phase on the sintering behavior and the superconducting properties were investigated. The '2223' phase had a composition of Bi 1.8Pb 0.4Sr 2.0Ca 2.0Cu 3.2O y. The typical sintering temperature was 850°C for the CaO- or SrO- added system and was a little lower -840°C, for the CaF 2- or SrF 2- added system, when the sintering was conducted for 120hr using specimens press-formed at 5000 kg/cm 2. The bulk density of the 0.3mol CaO-added specimen sintered at 850°C was 4.8g/cm 3, and the critical current density, Jc at 77K, was approximately 10 3 A/cm 2, better than that of the SrO-added specimen. The fluoride-added specimens had higher densities 5.3-5.5g/cm 3, while the Jc was not increased. Tc was not influenced by the additives and remained at approximately 110K.
| Original language | English |
|---|---|
| Pages (from-to) | 1053-1057 |
| Number of pages | 5 |
| Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
| Volume | 38 |
| Issue number | 8 |
| Publication status | Published - Nov 1991 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
- Metals and Alloys
Cite this
Effect of additive compositional alkaline earth metal oxides and fluorides on critical current density of superconductors in the Bi (Pb)-Sr-Ca-Cu-O system. / Yamamoto, Ryoichi; Yada, Setsuo; Itoh, Hideaki; Mazaki, Hiromasa; Takada, Jun; Naka, Shigeharu.
In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 38, No. 8, 11.1991, p. 1053-1057.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of additive compositional alkaline earth metal oxides and fluorides on critical current density of superconductors in the Bi (Pb)-Sr-Ca-Cu-O system
AU - Yamamoto, Ryoichi
AU - Yada, Setsuo
AU - Itoh, Hideaki
AU - Mazaki, Hiromasa
AU - Takada, Jun
AU - Naka, Shigeharu
PY - 1991/11
Y1 - 1991/11
N2 - The effects of the additives of 0.005-0, 3mol of CaCO3(CaO), SrO, CaF 2 and SrF 2 to 2mol of the '2223' phase on the sintering behavior and the superconducting properties were investigated. The '2223' phase had a composition of Bi 1.8Pb 0.4Sr 2.0Ca 2.0Cu 3.2O y. The typical sintering temperature was 850°C for the CaO- or SrO- added system and was a little lower -840°C, for the CaF 2- or SrF 2- added system, when the sintering was conducted for 120hr using specimens press-formed at 5000 kg/cm 2. The bulk density of the 0.3mol CaO-added specimen sintered at 850°C was 4.8g/cm 3, and the critical current density, Jc at 77K, was approximately 10 3 A/cm 2, better than that of the SrO-added specimen. The fluoride-added specimens had higher densities 5.3-5.5g/cm 3, while the Jc was not increased. Tc was not influenced by the additives and remained at approximately 110K.
AB - The effects of the additives of 0.005-0, 3mol of CaCO3(CaO), SrO, CaF 2 and SrF 2 to 2mol of the '2223' phase on the sintering behavior and the superconducting properties were investigated. The '2223' phase had a composition of Bi 1.8Pb 0.4Sr 2.0Ca 2.0Cu 3.2O y. The typical sintering temperature was 850°C for the CaO- or SrO- added system and was a little lower -840°C, for the CaF 2- or SrF 2- added system, when the sintering was conducted for 120hr using specimens press-formed at 5000 kg/cm 2. The bulk density of the 0.3mol CaO-added specimen sintered at 850°C was 4.8g/cm 3, and the critical current density, Jc at 77K, was approximately 10 3 A/cm 2, better than that of the SrO-added specimen. The fluoride-added specimens had higher densities 5.3-5.5g/cm 3, while the Jc was not increased. Tc was not influenced by the additives and remained at approximately 110K.
UR - http://www.scopus.com/inward/record.url?scp=0026258172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026258172&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0026258172
VL - 38
SP - 1053
EP - 1057
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 8
ER -