Superconductivity in Sr(Pd 1-x Ni x ) 2 Ge 2

C. D. Yang, H. C. Hsu, W. Y. Tseng, H. C. Chen, H. C. Ku, M. N. Ou, Y. Y. Chen, Yung-Yuan Hsu

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Abstract

The systematic variations of lattice structure and superconducting transition temperature in Sr(Pd 1-x Ni x ) 2 Ge 2 are reported. The X-ray diffraction patterns can be labeled by tetragonal I4/mmm (no. 139) space group with only minor impurities, which indicates the substitution Ni into Pd sites is successful and formed pure phase. The tetragonal lattice parameter a decreases and c increases monotonically with Ni concentration x, while the unit cell volume decreases. A systematic, gradual change of superconducting transition temperature T c increases slightly to 3.2 K for very small Ni doping of x ∼ 0.1 then slowly decreases to 2.1 K for x = 0.5. Further investigation for SrNi 2 Ge 2 by low temperature resistivity indicated a T c,mid of 0.87 K suggesting that superconductivity exists through the whole Ni substitution levels.

Original languageEnglish
Article number012089
JournalJournal of Physics: Conference Series
Volume273
Issue number1
DOIs
Publication statusPublished - 2011 Jan 1

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superconductivity
transition temperature
substitutes
lattice parameters
diffraction patterns
impurities
electrical resistivity
cells
x rays

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yang, C. D., Hsu, H. C., Tseng, W. Y., Chen, H. C., Ku, H. C., Ou, M. N., ... Hsu, Y-Y. (2011). Superconductivity in Sr(Pd 1-x Ni x ) 2 Ge 2 Journal of Physics: Conference Series, 273(1), [012089]. https://doi.org/10.1088/1742-6596/273/1/012089

Superconductivity in Sr(Pd 1-x Ni x ) 2 Ge 2 . / Yang, C. D.; Hsu, H. C.; Tseng, W. Y.; Chen, H. C.; Ku, H. C.; Ou, M. N.; Chen, Y. Y.; Hsu, Yung-Yuan.

In: Journal of Physics: Conference Series, Vol. 273, No. 1, 012089, 01.01.2011.

Research output: Contribution to journalArticle

Yang, CD, Hsu, HC, Tseng, WY, Chen, HC, Ku, HC, Ou, MN, Chen, YY & Hsu, Y-Y 2011, ' Superconductivity in Sr(Pd 1-x Ni x ) 2 Ge 2 ', Journal of Physics: Conference Series, vol. 273, no. 1, 012089. https://doi.org/10.1088/1742-6596/273/1/012089
Yang, C. D. ; Hsu, H. C. ; Tseng, W. Y. ; Chen, H. C. ; Ku, H. C. ; Ou, M. N. ; Chen, Y. Y. ; Hsu, Yung-Yuan. / Superconductivity in Sr(Pd 1-x Ni x ) 2 Ge 2 In: Journal of Physics: Conference Series. 2011 ; Vol. 273, No. 1.
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