Abstract
We tried to prepare the mercury-based superconductor, HgBa2Ca2Cu3O8+δ (Hg1223), under highly oxidizing atmosphere using a high pressure technique. Samples containing Hg1223 as the main phase with TC=90-122K were obtained. CuO and a new phase were included in the samples as impurities. The a-axes of the samples were shorter than the values ever reported for Hg1223 with TC=135K. These results suggest that our Hg1223 samples had excess hole concentrations, i.e. they are over-doped. The irreversibility field (Birr) was measured for two samples with TC=118 and 94K. They had almost the same normalized temperature (1-T/TC) dependence of Birr.
| Original language | English |
|---|---|
| Pages (from-to) | 1543-1546 |
| Number of pages | 4 |
| Journal | Journal of the European Ceramic Society |
| Volume | 19 |
| Issue number | 6-7 |
| Publication status | Published - 1999 Jun |
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Keywords
- High pressure synthesis
- Magnetic properties
- Oxide superconductors.
- Superconductivity
ASJC Scopus subject areas
- Ceramics and Composites
Cite this
High pressure synthesis of Hg1223 superconductor under highly oxidizing atmosphere. / Yoshida, N.; Adachi, S.; Tatsuki, T.; Tamura, T.; Tanabe, K.; Fujihara, Shinobu; Kimura, T.
In: Journal of the European Ceramic Society, Vol. 19, No. 6-7, 06.1999, p. 1543-1546.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - High pressure synthesis of Hg1223 superconductor under highly oxidizing atmosphere
AU - Yoshida, N.
AU - Adachi, S.
AU - Tatsuki, T.
AU - Tamura, T.
AU - Tanabe, K.
AU - Fujihara, Shinobu
AU - Kimura, T.
PY - 1999/6
Y1 - 1999/6
N2 - We tried to prepare the mercury-based superconductor, HgBa2Ca2Cu3O8+δ (Hg1223), under highly oxidizing atmosphere using a high pressure technique. Samples containing Hg1223 as the main phase with TC=90-122K were obtained. CuO and a new phase were included in the samples as impurities. The a-axes of the samples were shorter than the values ever reported for Hg1223 with TC=135K. These results suggest that our Hg1223 samples had excess hole concentrations, i.e. they are over-doped. The irreversibility field (Birr) was measured for two samples with TC=118 and 94K. They had almost the same normalized temperature (1-T/TC) dependence of Birr.
AB - We tried to prepare the mercury-based superconductor, HgBa2Ca2Cu3O8+δ (Hg1223), under highly oxidizing atmosphere using a high pressure technique. Samples containing Hg1223 as the main phase with TC=90-122K were obtained. CuO and a new phase were included in the samples as impurities. The a-axes of the samples were shorter than the values ever reported for Hg1223 with TC=135K. These results suggest that our Hg1223 samples had excess hole concentrations, i.e. they are over-doped. The irreversibility field (Birr) was measured for two samples with TC=118 and 94K. They had almost the same normalized temperature (1-T/TC) dependence of Birr.
KW - High pressure synthesis
KW - Magnetic properties
KW - Oxide superconductors.
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=0032633152&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032633152&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032633152
VL - 19
SP - 1543
EP - 1546
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
SN - 0955-2219
IS - 6-7
ER -