Effects of ordered structure on superconductivity in Ti 70-xZr 30Nb x (15≤ x ≤ 60)

Z. W. Wang; Y. Li; C. Ma; Z. Wang; H. X. Yang; H. F. Tian; H. L. Shi; L. Jia; F. Zhang; J. Q. Li

doi:10.1209/0295-5075/97/17013

Effects of ordered structure on superconductivity in Ti _70-xZr ₃₀Nb _x (15≤ x ≤ 60)

Z. W. Wang^*, Y. Li, C. Ma, Z. Wang, H. X. Yang, H. F. Tian, H. L. Shi, L. Jia, F. Zhang, J. Q. Li

^*Corresponding author for this work

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

Abstract

Superconductivity and structural properties of Ti _70-xZr ₃₀Nb _x have been systematically investigated for x ranging from 0 to 60. Superconductivity is observed in the cubic β-phase with 10≤x≤ 60. Moreover, evident modifications in superconductivity and superstructure, being interpreted as Nb and Ti local orders, are discovered in samples with 25≤x≤ 50. This superstructure phase in general coexists with the cubic β-phase and yields two superconducting transitions in the superconducting materials. Electronic structure calculations reveal a relatively higher density of states for the superstructure phase at the Fermi level, therefore a strong electron-phonon coupling and higher superconducting T _c are expected in agreement with the experimental data.

Original language	English
Article number	17013
Journal	Europhysics Letters
Volume	97
Issue number	1
DOIs	https://doi.org/10.1209/0295-5075/97/17013
Publication status	Published - Jan 2012
Externally published	Yes

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Wang, Z. W., Li, Y., Ma, C., Wang, Z., Yang, H. X., Tian, H. F., Shi, H. L., Jia, L., Zhang, F., & Li, J. Q. (2012). Effects of ordered structure on superconductivity in Ti _70-xZr ₃₀Nb _x (15≤ x ≤ 60). Europhysics Letters, 97(1), Article 17013. https://doi.org/10.1209/0295-5075/97/17013

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abstract = "Superconductivity and structural properties of Ti 70-xZr 30Nb x have been systematically investigated for x ranging from 0 to 60. Superconductivity is observed in the cubic β-phase with 10≤x≤ 60. Moreover, evident modifications in superconductivity and superstructure, being interpreted as Nb and Ti local orders, are discovered in samples with 25≤x≤ 50. This superstructure phase in general coexists with the cubic β-phase and yields two superconducting transitions in the superconducting materials. Electronic structure calculations reveal a relatively higher density of states for the superstructure phase at the Fermi level, therefore a strong electron-phonon coupling and higher superconducting T c are expected in agreement with the experimental data.",

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AU - Wang, Z. W.

AU - Li, Y.

AU - Ma, C.

AU - Wang, Z.

AU - Yang, H. X.

AU - Tian, H. F.

AU - Shi, H. L.

AU - Jia, L.

AU - Zhang, F.

AU - Li, J. Q.

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N2 - Superconductivity and structural properties of Ti 70-xZr 30Nb x have been systematically investigated for x ranging from 0 to 60. Superconductivity is observed in the cubic β-phase with 10≤x≤ 60. Moreover, evident modifications in superconductivity and superstructure, being interpreted as Nb and Ti local orders, are discovered in samples with 25≤x≤ 50. This superstructure phase in general coexists with the cubic β-phase and yields two superconducting transitions in the superconducting materials. Electronic structure calculations reveal a relatively higher density of states for the superstructure phase at the Fermi level, therefore a strong electron-phonon coupling and higher superconducting T c are expected in agreement with the experimental data.

AB - Superconductivity and structural properties of Ti 70-xZr 30Nb x have been systematically investigated for x ranging from 0 to 60. Superconductivity is observed in the cubic β-phase with 10≤x≤ 60. Moreover, evident modifications in superconductivity and superstructure, being interpreted as Nb and Ti local orders, are discovered in samples with 25≤x≤ 50. This superstructure phase in general coexists with the cubic β-phase and yields two superconducting transitions in the superconducting materials. Electronic structure calculations reveal a relatively higher density of states for the superstructure phase at the Fermi level, therefore a strong electron-phonon coupling and higher superconducting T c are expected in agreement with the experimental data.

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Effects of ordered structure on superconductivity in Ti _70-xZr ₃₀Nb _x (15≤ x ≤ 60)

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