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Phys. Rev. Lett. 72, 274–277 (1994)

Bulk superconductivity at an elevated temperature (Tc≊12 K) in a nickel containing alloy system Y-Ni-B-C

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R. Nagarajan, Chandan Mazumdar, Zakir Hossain, S. K. Dhar, K. V. Gopalakrishnan, L. C. Gupta, C. Godart, B. D. Padalia, and R. Vijayaraghavan
Tate Institute of Fundamental Research, Bombay, India 400 005
Indian Institute of Technology, Bombay, India 400 076
UPR-209, Centre National de la Recherche Scientifique, 92195 Meudon Cedex, France

See Also: Erratum

Received 24 September 1993; published in the issue dated 10 January 1994

We report here our discovery of bulk superconductivity at rather high Tc in samples having nominal compositions YNi4BO0.2 (Tc≊12.5 K) and YNi2B3O0.2 (Tc≊13.5 K). While YNi4BC0.2 seems to be a single phase material, YNi2B3C0.2 is a multiphase system. Our experimental results show that the two materials are distinct superconductors. Discovery of superconductivity in these materials is of significance since not only is their Tc high (>10 K) but they also have nickel in large proportions. No nickel-based ternary superconductor was previously known.

© 1994 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.72.274
DOI:
10.1103/PhysRevLett.72.274
PACS:
74.10.+v, 74.25.Fy, 74.60.-w, 74.70.Ad

See Also

Comment: Israel Felner, Comment on ‘‘Bulk superconductivity at an elevated temperature (Tc≊12 K) in a nickel containing alloy system Y-Ni-B-C’’, Phys. Rev. Lett. 72, 3742 (1994).

Erratum: R. Nagarajan, Chandan Mazumdar, Zakir Hossain, S. K. Dhar, K. V. Gopalakrishnan, L. C. Gupta, C. Godart, B. D. Padalia, and R. Vijayaraghavan, Erratum: ‘‘Bulk superconductivity at an elevated temperature (Tc≊12 K) in a nickel containing alloy system Y-Ni-B-C’’ [Phys. Rev. Lett. 72, 274(1994)], Phys. Rev. Lett. 73, 211 (1994).

Reply: R. Nagarajan, Chandan Mazumdar, Zakir Hossain, S. K. Dhar, K. V. Gopalakrishnan, L. C. Gupta, C. Godart, B. D. Padalia, and R. Vijayaraghavan, Nagarajan et al. reply, Phys. Rev. Lett. 72, 3743 (1994).

 
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