A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3)

M. Uehara; M. Uoshima; S. Ishiyama; H. Nakata; J. Akimitsu; Y. Matsui; T. Arima; Y. Tokura; N. Mori

doi:10.1016/0921-4534(94)90511-8

A new homologous series of oxycarbonate superconductors Sr₂(Ca,Sr)_n-1Cu_n(CO₃)_1-χ(BO₃)_χO_y (n=1, 2 and 3)

M. Uehara, M. Uoshima, S. Ishiyama, H. Nakata, J. Akimitsu, Y. Matsui, T. Arima, Y. Tokura, N. Mori

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Abstract

A new homologous series of oxycarbonate superconductors Sr₂(Ca,Sr)_n-1Cu_n(CO₃)_1-χ(BO₃)_χO_y (n=1, 2 and 3) prepared under high pressure have been found by resistivity and magnetization measurements. X-ray powder diffraction and HRTEM studies show that these phases have tetragonal structures with a=3.86 A ̊ and c=7.40 A ̊ for n=1, a=3.86 A ̊ and c=10.62 A ̊ for n=2, and a=3.87 A ̊ and c=13.98 A ̊ for n=3. Resistivity and magnetization measurements revealed that superconducting transition temperatures were 50, 105 and 115 K for n=1-3, respectively. These T_c's are higher than those of the structurally related analogous TlBa₂Ca_n-1Cu_nO_2n+3 at 100 and 110 K (n=2 and 3).

Original language	English
Pages (from-to)	310-314
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	229
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)90511-8
Publication status	Published - Aug 15 1994
Externally published	Yes

ASJC Scopus subject areas

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

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title = "A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3)",

abstract = "A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3) prepared under high pressure have been found by resistivity and magnetization measurements. X-ray powder diffraction and HRTEM studies show that these phases have tetragonal structures with a=3.86 A ̊ and c=7.40 A ̊ for n=1, a=3.86 A ̊ and c=10.62 A ̊ for n=2, and a=3.87 A ̊ and c=13.98 A ̊ for n=3. Resistivity and magnetization measurements revealed that superconducting transition temperatures were 50, 105 and 115 K for n=1-3, respectively. These Tc's are higher than those of the structurally related analogous TlBa2Can-1CunO2n+3 at 100 and 110 K (n=2 and 3).",

author = "M. Uehara and M. Uoshima and S. Ishiyama and H. Nakata and J. Akimitsu and Y. Matsui and T. Arima and Y. Tokura and N. Mori",

note = "Funding Information: This work was partly supportedb y a Grant-in Aid for Scientific Research from the Ministry of Education, Sciencea nd Culture, Japan.",

year = "1994",

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doi = "10.1016/0921-4534(94)90511-8",

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T1 - A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3)

AU - Uehara, M.

AU - Uoshima, M.

AU - Ishiyama, S.

AU - Nakata, H.

AU - Akimitsu, J.

AU - Matsui, Y.

AU - Arima, T.

AU - Tokura, Y.

AU - Mori, N.

N1 - Funding Information: This work was partly supportedb y a Grant-in Aid for Scientific Research from the Ministry of Education, Sciencea nd Culture, Japan.

PY - 1994/8/15

Y1 - 1994/8/15

N2 - A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3) prepared under high pressure have been found by resistivity and magnetization measurements. X-ray powder diffraction and HRTEM studies show that these phases have tetragonal structures with a=3.86 A ̊ and c=7.40 A ̊ for n=1, a=3.86 A ̊ and c=10.62 A ̊ for n=2, and a=3.87 A ̊ and c=13.98 A ̊ for n=3. Resistivity and magnetization measurements revealed that superconducting transition temperatures were 50, 105 and 115 K for n=1-3, respectively. These Tc's are higher than those of the structurally related analogous TlBa2Can-1CunO2n+3 at 100 and 110 K (n=2 and 3).

AB - A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3) prepared under high pressure have been found by resistivity and magnetization measurements. X-ray powder diffraction and HRTEM studies show that these phases have tetragonal structures with a=3.86 A ̊ and c=7.40 A ̊ for n=1, a=3.86 A ̊ and c=10.62 A ̊ for n=2, and a=3.87 A ̊ and c=13.98 A ̊ for n=3. Resistivity and magnetization measurements revealed that superconducting transition temperatures were 50, 105 and 115 K for n=1-3, respectively. These Tc's are higher than those of the structurally related analogous TlBa2Can-1CunO2n+3 at 100 and 110 K (n=2 and 3).

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A new homologous series of oxycarbonate superconductors Sr₂(Ca,Sr)_n-1Cu_n(CO₃)_1-χ(BO₃)_χO_y (n=1, 2 and 3)

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