Changes in the apical oxygen vibrational frequency and Tc due to Sr substitution for Ba in YB2Cu3O7-y, TI2Ba2CaCu2O8-y and TI2Ba2CuO6-y superconductors

M. Käll; L. Börjensson; M. kakihana; C. Stöm; L. G. Johansson; S. G. Ericksson; T. Lasson

doi:10.1016/0921-4534(91)91634-G

Changes in the apical oxygen vibrational frequency and T_c due to Sr substitution for Ba in YB₂Cu₃O_7-y, TI₂Ba₂CaCu₂O_8-y and TI₂Ba₂CuO_6-y superconductors

M. Käll, L. Börjensson, M. kakihana, C. Stöm, L. G. Johansson, S. G. Ericksson, T. Lasson

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

5 Citations (Scopus)

Abstract

Variations of T_c and Raman spectra due to partial Sr substitution for Ba have been investigated for YBa_2-xSr_xCu₃O_7-y(Y123), x =0-1.0, TI₂bA_2-xSr_xCaCu₂O_8-y (Ti2212), x = 0-0.6, and Ti₂Ba_2-xSr_xCuO_6-y (TI2201), x = 0-0.6. T_c decreases rapidly with increasing Sr content for the Ti2201 and TI2201 and TI2212 systems, while only slight decreases is observed for Y123. The vibrational frequency of the apical oxygen shows a strong dependence on Sr content. The frequency changes are consistent with changes in bond distances, induced by the increased compression upon Sr doping, for the Y123 system only. For the TI systems, however, we have to assume additional effects from change redistributions, which we suggests are connected tot he strong deacrease in T_c for these system.

Original language	English
Pages (from-to)	821-822
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	185-189
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(91)91634-G
Publication status	Published - 1991 Dec 1
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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10.1016/0921-4534(91)91634-G

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Käll, M., Börjensson, L., kakihana, M., Stöm, C., Johansson, L. G., Ericksson, S. G., & Lasson, T. (1991). Changes in the apical oxygen vibrational frequency and T_c due to Sr substitution for Ba in YB₂Cu₃O_7-y, TI₂Ba₂CaCu₂O_8-y and TI₂Ba₂CuO_6-y superconductors. Physica C: Superconductivity and its applications, 185-189(PART 2), 821-822. https://doi.org/10.1016/0921-4534(91)91634-G

Changes in the apical oxygen vibrational frequency and T_c due to Sr substitution for Ba in YB₂Cu₃O_7-y, TI₂Ba₂CaCu₂O_8-y and TI₂Ba₂CuO_6-y superconductors. / Käll, M.; Börjensson, L.; kakihana, M. et al.

In: Physica C: Superconductivity and its applications, Vol. 185-189, No. PART 2, 01.12.1991, p. 821-822.

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

Käll, M, Börjensson, L, kakihana, M, Stöm, C, Johansson, LG, Ericksson, SG & Lasson, T 1991, 'Changes in the apical oxygen vibrational frequency and T_c due to Sr substitution for Ba in YB₂Cu₃O_7-y, TI₂Ba₂CaCu₂O_8-y and TI₂Ba₂CuO_6-y superconductors', Physica C: Superconductivity and its applications, vol. 185-189, no. PART 2, pp. 821-822. https://doi.org/10.1016/0921-4534(91)91634-G

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title = "Changes in the apical oxygen vibrational frequency and Tc due to Sr substitution for Ba in YB2Cu3O7-y, TI2Ba2CaCu2O8-y and TI2Ba2CuO6-y superconductors",

abstract = "Variations of Tc and Raman spectra due to partial Sr substitution for Ba have been investigated for YBa2-xSrxCu3O7-y(Y123), x =0-1.0, TI2bA2-xSrxCaCu2O8-y (Ti2212), x = 0-0.6, and Ti2Ba2-xSrxCuO6-y (TI2201), x = 0-0.6. Tc decreases rapidly with increasing Sr content for the Ti2201 and TI2201 and TI2212 systems, while only slight decreases is observed for Y123. The vibrational frequency of the apical oxygen shows a strong dependence on Sr content. The frequency changes are consistent with changes in bond distances, induced by the increased compression upon Sr doping, for the Y123 system only. For the TI systems, however, we have to assume additional effects from change redistributions, which we suggests are connected tot he strong deacrease in Tc for these system.",

author = "M. K{\"a}ll and L. B{\"o}rjensson and M. kakihana and C. St{\"o}m and Johansson, {L. G.} and Ericksson, {S. G.} and T. Lasson",

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AU - Käll, M.

AU - Börjensson, L.

AU - kakihana, M.

AU - Stöm, C.

AU - Johansson, L. G.

AU - Ericksson, S. G.

AU - Lasson, T.

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N2 - Variations of Tc and Raman spectra due to partial Sr substitution for Ba have been investigated for YBa2-xSrxCu3O7-y(Y123), x =0-1.0, TI2bA2-xSrxCaCu2O8-y (Ti2212), x = 0-0.6, and Ti2Ba2-xSrxCuO6-y (TI2201), x = 0-0.6. Tc decreases rapidly with increasing Sr content for the Ti2201 and TI2201 and TI2212 systems, while only slight decreases is observed for Y123. The vibrational frequency of the apical oxygen shows a strong dependence on Sr content. The frequency changes are consistent with changes in bond distances, induced by the increased compression upon Sr doping, for the Y123 system only. For the TI systems, however, we have to assume additional effects from change redistributions, which we suggests are connected tot he strong deacrease in Tc for these system.

AB - Variations of Tc and Raman spectra due to partial Sr substitution for Ba have been investigated for YBa2-xSrxCu3O7-y(Y123), x =0-1.0, TI2bA2-xSrxCaCu2O8-y (Ti2212), x = 0-0.6, and Ti2Ba2-xSrxCuO6-y (TI2201), x = 0-0.6. Tc decreases rapidly with increasing Sr content for the Ti2201 and TI2201 and TI2212 systems, while only slight decreases is observed for Y123. The vibrational frequency of the apical oxygen shows a strong dependence on Sr content. The frequency changes are consistent with changes in bond distances, induced by the increased compression upon Sr doping, for the Y123 system only. For the TI systems, however, we have to assume additional effects from change redistributions, which we suggests are connected tot he strong deacrease in Tc for these system.

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Changes in the apical oxygen vibrational frequency and T_c due to Sr substitution for Ba in YB₂Cu₃O_7-y, TI₂Ba₂CaCu₂O_8-y and TI₂Ba₂CuO_6-y superconductors

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