### Abstract

A new homologous series of oxycarbonate superconductors Sr_{2}(Ca,Sr)_{n-1}Cu_{n}(CO_{3})_{1-χ}(BO_{3})_{χ}O_{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 TlBa_{2}Ca_{n-1}Cu_{n}O_{2n+3} at 100 and 110 K (n=2 and 3).

Original language | English |
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Pages (from-to) | 310-314 |

Number of pages | 5 |

Journal | Physica C: Superconductivity and its Applications |

Volume | 229 |

Issue number | 3-4 |

DOIs | |

Publication status | Published - Aug 15 1994 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Condensed Matter Physics

### Cite this

*Physica C: Superconductivity and its Applications*,

*229*(3-4), 310-314. https://doi.org/10.1016/0921-4534(94)90511-8

**A new homologous series of oxycarbonate superconductors Sr2(Ca,Sr)n-1Cun(CO3)1-χ(BO3)χOy (n=1, 2 and 3).** / Uehara, M.; Uoshima, M.; Ishiyama, S.; Nakata, H.; Akimitsu, Jun; Matsui, Y.; Arima, T.; Tokura, Y.; Mori, N.

Research output: Contribution to journal › Article

*Physica C: Superconductivity and its Applications*, vol. 229, no. 3-4, pp. 310-314. https://doi.org/10.1016/0921-4534(94)90511-8

}

TY - JOUR

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, Jun

AU - Matsui, Y.

AU - Arima, T.

AU - Tokura, Y.

AU - Mori, N.

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).

UR - http://www.scopus.com/inward/record.url?scp=0028480880&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028480880&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(94)90511-8

DO - 10.1016/0921-4534(94)90511-8

M3 - Article

AN - SCOPUS:0028480880

VL - 229

SP - 310

EP - 314

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - 3-4

ER -