TY - GEN
T1 - Search for new superconductors by soft-chemical techniques
AU - Kato, Masatsune
AU - Takamatsu, Tomohisa
AU - Yagyu, Hotaka
AU - Noji, Takashi
AU - Koike, Yoji
PY - 2012
Y1 - 2012
N2 - Our recent works on the search for new superconductors using soft-chemical techniques are reviewed. We have found new Mg-intercalated superconductors of MgxZrNCl and MgxHfNCl with Tc ∼ 13 K and 25 K, respectively. Moreover, we have succeeded in preparing bulk samples of hole-doped (La,Ca)2CuO4 with the Nd2CuO 4-type, namely, the so-called T'-type structure by reduction of (La,Ca)2CuO4 with the K2NiF4-type, namely, the so-called T-type structure using CaH2 at a temperature as low as 300°C and subsequent oxidation. This result is in contrast with the synthesis of (La,Ca)2CuO4 with the K2NiF 4-type structure by the conventional solid-state reaction method at a temperature as high as ∼1000°C.
AB - Our recent works on the search for new superconductors using soft-chemical techniques are reviewed. We have found new Mg-intercalated superconductors of MgxZrNCl and MgxHfNCl with Tc ∼ 13 K and 25 K, respectively. Moreover, we have succeeded in preparing bulk samples of hole-doped (La,Ca)2CuO4 with the Nd2CuO 4-type, namely, the so-called T'-type structure by reduction of (La,Ca)2CuO4 with the K2NiF4-type, namely, the so-called T-type structure using CaH2 at a temperature as low as 300°C and subsequent oxidation. This result is in contrast with the synthesis of (La,Ca)2CuO4 with the K2NiF 4-type structure by the conventional solid-state reaction method at a temperature as high as ∼1000°C.
KW - Intercalation
KW - Low-temperature synthesis
KW - Soft-chemical process
KW - Superconductivity
UR - http://www.scopus.com/inward/record.url?scp=84859721431&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859721431&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.508.203
DO - 10.4028/www.scientific.net/KEM.508.203
M3 - Conference contribution
AN - SCOPUS:84859721431
SN - 9783037853764
T3 - Key Engineering Materials
SP - 203
EP - 206
BT - Materials Integration
PB - Trans Tech Publications Ltd
T2 - Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
Y2 - 1 December 2011 through 2 December 2011
ER -