TY - JOUR
T1 - Synthesis of new electron-doped cuprates LixSr 2CuO2X2 (X = Cl, Br)
AU - Kajita, T.
AU - Kato, M.
AU - Suzuki, T.
AU - Itoh, T.
AU - Noji, T.
AU - Koike, Y.
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan.
PY - 2005/10/1
Y1 - 2005/10/1
N2 - We have successfully synthesized new electron-doped cuprates Li xSr2CuO2Cl2 with x ≦ 0.10 and LixSr2CuO2Br2 with x ≦ 0.34 using an electrochemical Li-intercalation technique. The electrochemical Li-intercalation has been carried out at room temperature under a constant potential of 500 mV vs. Li/Li+ using a three-electrode cell set up as LixSr2CuO2X2 (X = Cl, Br)|1.0 M LiClO4/PC|Li. A sheet of Li was used as a reference electrode also. The magnetic susceptibility measurements have revealed the appearance of superconductivity in LixSr2CuO2Br2. The superconducting transition temperature, Tc, is 8 K and independent of the Li-content x, while the superconducting volume fraction at 2 K exhibits the maximum at x ∼ 0.15. In addition, no superconductivity has been observed in LixSr2CuO2Cl2.
AB - We have successfully synthesized new electron-doped cuprates Li xSr2CuO2Cl2 with x ≦ 0.10 and LixSr2CuO2Br2 with x ≦ 0.34 using an electrochemical Li-intercalation technique. The electrochemical Li-intercalation has been carried out at room temperature under a constant potential of 500 mV vs. Li/Li+ using a three-electrode cell set up as LixSr2CuO2X2 (X = Cl, Br)|1.0 M LiClO4/PC|Li. A sheet of Li was used as a reference electrode also. The magnetic susceptibility measurements have revealed the appearance of superconductivity in LixSr2CuO2Br2. The superconducting transition temperature, Tc, is 8 K and independent of the Li-content x, while the superconducting volume fraction at 2 K exhibits the maximum at x ∼ 0.15. In addition, no superconductivity has been observed in LixSr2CuO2Cl2.
KW - Cuprate
KW - Electron-doping
KW - Li intercalation
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U2 - 10.1016/j.physc.2005.01.039
DO - 10.1016/j.physc.2005.01.039
M3 - Conference article
AN - SCOPUS:25444473132
VL - 426-431
SP - 500
EP - 504
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - I
T2 - Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity
Y2 - 23 November 2004 through 25 November 2004
ER -