Abstract
A nearly single phase (Hg,Tl)-bilayer sample, (Hg0.7,Tl0.3)2Ba2(Ca0.2,Y0.8)Cu2Oy, was synthesized by a high pressure synthesizing technique. The as-sintered sample, which is considered to be underdoped, shows superconductivity at Tc = 65 K. The sample was then annealed in Ar gas at 300 °C for 30 min, 12 h, and 400 °C for 36 h, respectively. The crystal structure of these samples was determined by Rietveld refinement. Both of the a- and c-axes lengths expand with the decrease of hole doping in the crystal. It was found that the interplanar distance between the Ba-(rock salt)-Ba sheets expands, and the interplanar distance between the Ba-(infinite layer)-Ba sheets shrinks with Ar annealing, showing the same variation tendency as found in (Hg,Tl)-2223.
| Original language | English |
|---|---|
| Pages (from-to) | 219-227 |
| Number of pages | 9 |
| Journal | Physica C: Superconductivity and its Applications |
| Volume | 314 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1999 Mar 20 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Study of structural variation caused by Ar annealing for (Hg0.7,Tl0.3)2Ba2(Ca0.2,Y0.8)Cu2Oy . / Wu, X. J.; Yamamoto, Ayako; Tatsuki, T.; Adachi, S.; Tanabe, K.
In: Physica C: Superconductivity and its Applications, Vol. 314, No. 3, 20.03.1999, p. 219-227.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study of structural variation caused by Ar annealing for (Hg0.7,Tl0.3)2Ba2(Ca0.2,Y0.8)Cu2Oy
AU - Wu, X. J.
AU - Yamamoto, Ayako
AU - Tatsuki, T.
AU - Adachi, S.
AU - Tanabe, K.
PY - 1999/3/20
Y1 - 1999/3/20
N2 - A nearly single phase (Hg,Tl)-bilayer sample, (Hg0.7,Tl0.3)2Ba2(Ca0.2,Y0.8)Cu2Oy, was synthesized by a high pressure synthesizing technique. The as-sintered sample, which is considered to be underdoped, shows superconductivity at Tc = 65 K. The sample was then annealed in Ar gas at 300 °C for 30 min, 12 h, and 400 °C for 36 h, respectively. The crystal structure of these samples was determined by Rietveld refinement. Both of the a- and c-axes lengths expand with the decrease of hole doping in the crystal. It was found that the interplanar distance between the Ba-(rock salt)-Ba sheets expands, and the interplanar distance between the Ba-(infinite layer)-Ba sheets shrinks with Ar annealing, showing the same variation tendency as found in (Hg,Tl)-2223.
AB - A nearly single phase (Hg,Tl)-bilayer sample, (Hg0.7,Tl0.3)2Ba2(Ca0.2,Y0.8)Cu2Oy, was synthesized by a high pressure synthesizing technique. The as-sintered sample, which is considered to be underdoped, shows superconductivity at Tc = 65 K. The sample was then annealed in Ar gas at 300 °C for 30 min, 12 h, and 400 °C for 36 h, respectively. The crystal structure of these samples was determined by Rietveld refinement. Both of the a- and c-axes lengths expand with the decrease of hole doping in the crystal. It was found that the interplanar distance between the Ba-(rock salt)-Ba sheets expands, and the interplanar distance between the Ba-(infinite layer)-Ba sheets shrinks with Ar annealing, showing the same variation tendency as found in (Hg,Tl)-2223.
UR - http://www.scopus.com/inward/record.url?scp=0032654569&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032654569&partnerID=8YFLogxK
U2 - 10.1016/S0921-4534(99)00172-0
DO - 10.1016/S0921-4534(99)00172-0
M3 - Article
VL - 314
SP - 219
EP - 227
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3
ER -