Synthesis of new electron-doped cuprates LixSr 2CuO2X2 (X = Cl, Br)

T. Kajita; M. Kato; T. Suzuki; T. Itoh; T. Noji; Y. Koike

doi:10.1016/j.physc.2005.01.039

Synthesis of new electron-doped cuprates Li_xSr ₂CuO₂X₂ (X = Cl, Br)

T. Kajita, M. Kato, T. Suzuki, T. Itoh, T. Noji, Y. Koike

Research output: Contribution to journal › Conference article › peer-review

5 Citations (Scopus)

Abstract

We have successfully synthesized new electron-doped cuprates Li _xSr₂CuO₂Cl₂ with x ≦ 0.10 and Li_xSr₂CuO₂Br₂ 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 Li_xSr₂CuO₂X₂ (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 Li_xSr₂CuO₂Br₂. The superconducting transition temperature, T_c, 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 Li_xSr₂CuO₂Cl₂.

Original language	English
Pages (from-to)	500-504
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	426-431
Issue number	I
DOIs	https://doi.org/10.1016/j.physc.2005.01.039
Publication status	Published - 2005 Oct 1
Externally published	Yes
Event	Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - Duration: 2004 Nov 23 → 2004 Nov 25

Keywords

Cuprate
Electron-doping
Li intercalation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2005.01.039

Cite this

@article{d1eb4287ec28425d8eb3b3b3c4ba2e7a,

title = "Synthesis of new electron-doped cuprates LixSr 2CuO2X2 (X = Cl, Br)",

abstract = "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.",

keywords = "Cuprate, Electron-doping, Li intercalation",

author = "T. Kajita and M. Kato and T. Suzuki and T. Itoh and T. Noji and Y. Koike",

note = "Funding Information: This work was supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan.; Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity ; Conference date: 23-11-2004 Through 25-11-2004",

year = "2005",

month = oct,

day = "1",

doi = "10.1016/j.physc.2005.01.039",

language = "English",

volume = "426-431",

pages = "500--504",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "I",

}

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

UR - http://www.scopus.com/inward/record.url?scp=25444473132&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25444473132&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2005.01.039

DO - 10.1016/j.physc.2005.01.039

M3 - Conference article

AN - SCOPUS:25444473132

SN - 0921-4534

VL - 426-431

SP - 500

EP - 504

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

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 -