Abstract
In situ observation of oxygen absorption and desorption during heating and cooling cycle with TG and DTA was done to determine the optimum preparation conditions of high Tc Y-Ba-Cu-O compounds. We suggest the best recipe in air is to fire the raw mixture of 1/2Y2O3, 2BaCO3 and 3CuO at 930°C for more than 10 h, followed by slow cooling in the furnace to take as much oxygen as possible within the specimen. With this method single phase material of an orthorhombic superconducting oxide YBa2Cu3O6.74 with Tc=91.3 K was synthesized, with orthorhombic unit cell dimensions of a=3.8180(6) Å, b=3.8888(7) Å, and c=11.668(2) Å.
| Original language | English |
|---|---|
| Pages (from-to) | 1066-1099 |
| Number of pages | 34 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 26 |
| Issue number | 6A |
| DOIs | |
| Publication status | Published - 1987 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Thermal and x-ray analyses of high temperature superconductor YBa2Cu3O6.74. / Kikuchi, Masae; Syono, Yasuhiko; Yamamoto, Ayako; Oh-Ishi, Katsuyoshi; Arai, Hide; Hiraga, Kenji; Kobayashi, Norio; Sasaoka, Takaaki.
In: Japanese Journal of Applied Physics, Vol. 26, No. 6A, 1987, p. 1066-1099.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermal and x-ray analyses of high temperature superconductor YBa2Cu3O6.74
AU - Kikuchi, Masae
AU - Syono, Yasuhiko
AU - Yamamoto, Ayako
AU - Oh-Ishi, Katsuyoshi
AU - Arai, Hide
AU - Hiraga, Kenji
AU - Kobayashi, Norio
AU - Sasaoka, Takaaki
PY - 1987
Y1 - 1987
N2 - In situ observation of oxygen absorption and desorption during heating and cooling cycle with TG and DTA was done to determine the optimum preparation conditions of high Tc Y-Ba-Cu-O compounds. We suggest the best recipe in air is to fire the raw mixture of 1/2Y2O3, 2BaCO3 and 3CuO at 930°C for more than 10 h, followed by slow cooling in the furnace to take as much oxygen as possible within the specimen. With this method single phase material of an orthorhombic superconducting oxide YBa2Cu3O6.74 with Tc=91.3 K was synthesized, with orthorhombic unit cell dimensions of a=3.8180(6) Å, b=3.8888(7) Å, and c=11.668(2) Å.
AB - In situ observation of oxygen absorption and desorption during heating and cooling cycle with TG and DTA was done to determine the optimum preparation conditions of high Tc Y-Ba-Cu-O compounds. We suggest the best recipe in air is to fire the raw mixture of 1/2Y2O3, 2BaCO3 and 3CuO at 930°C for more than 10 h, followed by slow cooling in the furnace to take as much oxygen as possible within the specimen. With this method single phase material of an orthorhombic superconducting oxide YBa2Cu3O6.74 with Tc=91.3 K was synthesized, with orthorhombic unit cell dimensions of a=3.8180(6) Å, b=3.8888(7) Å, and c=11.668(2) Å.
UR - http://www.scopus.com/inward/record.url?scp=0023367093&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023367093&partnerID=8YFLogxK
U2 - 10.1143/JJAP.26.L1066
DO - 10.1143/JJAP.26.L1066
M3 - Article
VL - 26
SP - 1066
EP - 1099
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 6A
ER -