Abstract
Nearly single-phase polycrystalline samples of HgBa2Ca2Cu3O8+δ were successfully synthesized under relatively simple and unprecedented synthesis conditions, i.e. at a "low" temperature (<700°C) and for a "long" period of time (5-168h), using mono-oxide powders of Hg, Ba, Ca, and Cu as starting materials. A pressed powder mixture was heated at 665°C for ≈75 h in an evacuated fused quartz tube, and then post-annealed in flowing O2 gas to exhibit a Meissner signal below 135.4 K. Zero resistance of this sample was observed at 133.9 K.
| Original language | English |
|---|---|
| Pages (from-to) | 33-37 |
| Number of pages | 5 |
| Journal | Physica C: Superconductivity and its applications |
| Volume | 222 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1994 Mar 10 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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Cite this
Isawa, K., Tokiwa-Yamamoto, A., Itoh, M., Adachi, S., & Yamauchi, H. (1994). Encapsulation method for the synthesis of nearly single-phase superconducting HgBa2Ca2Cu3O8+δ with Tc≥ 135 K. Physica C: Superconductivity and its applications, 222(1-2), 33-37. https://doi.org/10.1016/0921-4534(94)90111-2