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

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

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)500-504
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume426-431
Issue numberI
DOIs
Publication statusPublished - 2005 Oct 1
Externally publishedYes

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Intercalation
Superconductivity
intercalation
cuprates
superconductivity
Electrodes
electrodes
Electrons
synthesis
Magnetic susceptibility
Superconducting transition temperature
Volume fraction
electrons
transition temperature
magnetic permeability
room temperature
cells
Temperature
lithium perchlorate

Keywords

  • Cuprate
  • Electron-doping
  • Li intercalation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Synthesis of new electron-doped cuprates LixSr 2CuO2X2 (X = Cl, Br). / Kajita, T.; Kato, M.; Suzuki, Takao; Itoh, T.; Noji, T.; Koike, Y.

In: Physica C: Superconductivity and its Applications, Vol. 426-431, No. I, 01.10.2005, p. 500-504.

Research output: Contribution to journalArticle

Kajita, T. ; Kato, M. ; Suzuki, Takao ; Itoh, T. ; Noji, T. ; Koike, Y. / Synthesis of new electron-doped cuprates LixSr 2CuO2X2 (X = Cl, Br). In: Physica C: Superconductivity and its Applications. 2005 ; Vol. 426-431, No. I. pp. 500-504.
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AU - Kato, M.

AU - Suzuki, Takao

AU - Itoh, T.

AU - Noji, T.

AU - Koike, Y.

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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.

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