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

研究成果: Conference article › 査読

5 被引用数 (Scopus)

抄録

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.

本文言語	English
ページ（範囲）	500-504
ページ数	5
ジャーナル	Physica C: Superconductivity and its applications
巻	426-431
号	I
DOI	https://doi.org/10.1016/j.physc.2005.01.039
出版ステータス	Published - 2005 10月 1
外部発表	はい
イベント	Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity - 継続期間: 2004 11月 23 → 2004 11月 25

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

文献へのアクセス

10.1016/j.physc.2005.01.039

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引用スタイル

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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",

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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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EP - 504

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

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T2 - Proceedings of the 17th International Symposium on Superconductivity (ISS 2004) Advances in Supeconductivity

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