High-pressure synthesis of a new homologous series of superconductors, (Hg1-xTlx)2Ba2Ca n-1CunOy (0.3 ≤ x ≤ 0.6, n=3,4)

T. Tatsuki; A. Tokiwa-Yamamoto; T. Tamura; X. J. Wu; Y. Moriwaki; S. Adachi; K. Tanabe

doi:10.1007/BF00753922

High-pressure synthesis of a new homologous series of superconductors, (Hg_1-xTl_x)₂Ba₂Ca _n-1Cu_nO_y (0.3 ≤ x ≤ 0.6, n=3,4)

T. Tatsuki, A. Tokiwa-Yamamoto, T. Tamura, X. J. Wu, Y. Moriwaki, S. Adachi, K. Tanabe

Research output: Contribution to journal › Article › peer-review

Abstract

We have recently synthesized new superconducting cuprates containing a mercury-based bilayer, i.e. (Hg, Tl)₂Ba₂(Ca, Y)Cu₂O_y and (Hg_1-xTl_x)₂Ba₂Ca _n-1Cu_nO_y (x ∼ 0.4, n = 3, 4) by a high-pressure technique. These compounds are the n=2, 3 and 4 members of a new homologous series, (Hg, Tl)-22(n - 1)n. The effects of Tl substitution for Hg on the formation and superconductivity of the (Hg, Tl)-2223 and -2234 phases are investigated. Both the phases are stabilized for the Tl content x of 0.3-0.6. T_c of the as-synthesized (Hg, Tl)-2223 compound increases from 45 K to 81 K with an increase in x. In contrast, T_c of the (Hg,Tl)-2234 compound is almost independent of x (∼114 K).

Original language	English
Pages (from-to)	1559-1564
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	105
Issue number	5-6
DOIs	https://doi.org/10.1007/BF00753922
Publication status	Published - 1996 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

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10.1007/BF00753922

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title = "High-pressure synthesis of a new homologous series of superconductors, (Hg1-xTlx)2Ba2Ca n-1CunOy (0.3 ≤ x ≤ 0.6, n=3,4)",

abstract = "We have recently synthesized new superconducting cuprates containing a mercury-based bilayer, i.e. (Hg, Tl)2Ba2(Ca, Y)Cu2Oy and (Hg1-xTlx)2Ba2Ca n-1CunOy (x ∼ 0.4, n = 3, 4) by a high-pressure technique. These compounds are the n=2, 3 and 4 members of a new homologous series, (Hg, Tl)-22(n - 1)n. The effects of Tl substitution for Hg on the formation and superconductivity of the (Hg, Tl)-2223 and -2234 phases are investigated. Both the phases are stabilized for the Tl content x of 0.3-0.6. Tc of the as-synthesized (Hg, Tl)-2223 compound increases from 45 K to 81 K with an increase in x. In contrast, Tc of the (Hg,Tl)-2234 compound is almost independent of x (∼114 K).",

author = "T. Tatsuki and A. Tokiwa-Yamamoto and T. Tamura and Wu, {X. J.} and Y. Moriwaki and S. Adachi and K. Tanabe",

year = "1996",

month = jan,

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doi = "10.1007/BF00753922",

language = "English",

volume = "105",

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journal = "Journal of Low Temperature Physics",

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T1 - High-pressure synthesis of a new homologous series of superconductors, (Hg1-xTlx)2Ba2Ca n-1CunOy (0.3 ≤ x ≤ 0.6, n=3,4)

AU - Tatsuki, T.

AU - Tokiwa-Yamamoto, A.

AU - Tamura, T.

AU - Wu, X. J.

AU - Moriwaki, Y.

AU - Adachi, S.

AU - Tanabe, K.

PY - 1996/1/1

Y1 - 1996/1/1

N2 - We have recently synthesized new superconducting cuprates containing a mercury-based bilayer, i.e. (Hg, Tl)2Ba2(Ca, Y)Cu2Oy and (Hg1-xTlx)2Ba2Ca n-1CunOy (x ∼ 0.4, n = 3, 4) by a high-pressure technique. These compounds are the n=2, 3 and 4 members of a new homologous series, (Hg, Tl)-22(n - 1)n. The effects of Tl substitution for Hg on the formation and superconductivity of the (Hg, Tl)-2223 and -2234 phases are investigated. Both the phases are stabilized for the Tl content x of 0.3-0.6. Tc of the as-synthesized (Hg, Tl)-2223 compound increases from 45 K to 81 K with an increase in x. In contrast, Tc of the (Hg,Tl)-2234 compound is almost independent of x (∼114 K).

AB - We have recently synthesized new superconducting cuprates containing a mercury-based bilayer, i.e. (Hg, Tl)2Ba2(Ca, Y)Cu2Oy and (Hg1-xTlx)2Ba2Ca n-1CunOy (x ∼ 0.4, n = 3, 4) by a high-pressure technique. These compounds are the n=2, 3 and 4 members of a new homologous series, (Hg, Tl)-22(n - 1)n. The effects of Tl substitution for Hg on the formation and superconductivity of the (Hg, Tl)-2223 and -2234 phases are investigated. Both the phases are stabilized for the Tl content x of 0.3-0.6. Tc of the as-synthesized (Hg, Tl)-2223 compound increases from 45 K to 81 K with an increase in x. In contrast, Tc of the (Hg,Tl)-2234 compound is almost independent of x (∼114 K).

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JO - Journal of Low Temperature Physics

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IS - 5-6

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High-pressure synthesis of a new homologous series of superconductors, (Hg_1-xTl_x)₂Ba₂Ca _n-1Cu_nO_y (0.3 ≤ x ≤ 0.6, n=3,4)

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