TY - JOUR
T1 - Encapsulation method for the synthesis of nearly single-phase superconducting HgBa2Ca2Cu3O8+δ with Tc≥ 135 K
AU - Isawa, Kazuyuki
AU - Tokiwa-Yamamoto, Ayako
AU - Itoh, Makoto
AU - Adachi, Seiji
AU - Yamauchi, H.
N1 - Funding Information:
The authors would like to thank S. Tanaka and T. Sakudo of SRL-ISTEC for their continuous support. This work was supported by the New Energy and Industrial Technology Development Organization for the R&D of Industrial Science and Technology Frontier Program.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 1994/3/10
Y1 - 1994/3/10
N2 - 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.
AB - 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.
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U2 - 10.1016/0921-4534(94)90111-2
DO - 10.1016/0921-4534(94)90111-2
M3 - Article
AN - SCOPUS:0028399591
VL - 222
SP - 33
EP - 37
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -