Abstract
TlBaxSr4-xCu2(CO3)Oy oxycarbonates with the Tl-1201 structure were synthesized over a wide range of x (1.0≤x ≤3.2) and examined by X-ray powder diffraction, electron diffraction, high-resolution electron microscopy and magnetometry methods. New phases with the Tl-1201 structure having 6 and 7 times periodicities along the b-axis were isolated. The former was stable for a wide Ba-rich range (1.8≤x≤3.2), and the latter was observed for a smaller Ba content range (1.2≤x≤1.6). The phase stability was found to depend on the synthesis condition. The maximum Tc of the as-synthesized specimen in this series occurred at about 70 K around x=2.0. The Meissner volume fraction of the as-synthesized specimen (x=2.4) was 30% at 5 K.
| Original language | English |
|---|---|
| Pages (from-to) | 200-204 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 219 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - Jan 1 1994 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Synthesis and superconductivity of oxycarbonates of the Tl-1201 phase. / Kikuchi, M.; Ohshima, E.; Ohnishi, N.; Muraoka, Yuji; Nakajima, S.; Aoyagi, E.; Ogawa, M.; Akimitsu, Jun; Oku, T.; Hiraga, K.; Syono, Y.
In: Physica C: Superconductivity and its Applications, Vol. 219, No. 1-2, 01.01.1994, p. 200-204.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and superconductivity of oxycarbonates of the Tl-1201 phase
AU - Kikuchi, M.
AU - Ohshima, E.
AU - Ohnishi, N.
AU - Muraoka, Yuji
AU - Nakajima, S.
AU - Aoyagi, E.
AU - Ogawa, M.
AU - Akimitsu, Jun
AU - Oku, T.
AU - Hiraga, K.
AU - Syono, Y.
PY - 1994/1/1
Y1 - 1994/1/1
N2 - TlBaxSr4-xCu2(CO3)Oy oxycarbonates with the Tl-1201 structure were synthesized over a wide range of x (1.0≤x ≤3.2) and examined by X-ray powder diffraction, electron diffraction, high-resolution electron microscopy and magnetometry methods. New phases with the Tl-1201 structure having 6 and 7 times periodicities along the b-axis were isolated. The former was stable for a wide Ba-rich range (1.8≤x≤3.2), and the latter was observed for a smaller Ba content range (1.2≤x≤1.6). The phase stability was found to depend on the synthesis condition. The maximum Tc of the as-synthesized specimen in this series occurred at about 70 K around x=2.0. The Meissner volume fraction of the as-synthesized specimen (x=2.4) was 30% at 5 K.
AB - TlBaxSr4-xCu2(CO3)Oy oxycarbonates with the Tl-1201 structure were synthesized over a wide range of x (1.0≤x ≤3.2) and examined by X-ray powder diffraction, electron diffraction, high-resolution electron microscopy and magnetometry methods. New phases with the Tl-1201 structure having 6 and 7 times periodicities along the b-axis were isolated. The former was stable for a wide Ba-rich range (1.8≤x≤3.2), and the latter was observed for a smaller Ba content range (1.2≤x≤1.6). The phase stability was found to depend on the synthesis condition. The maximum Tc of the as-synthesized specimen in this series occurred at about 70 K around x=2.0. The Meissner volume fraction of the as-synthesized specimen (x=2.4) was 30% at 5 K.
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UR - http://www.scopus.com/inward/citedby.url?scp=43949152729&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(94)90035-3
DO - 10.1016/0921-4534(94)90035-3
M3 - Article
VL - 219
SP - 200
EP - 204
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -