Superconductivity in lanthanum nickel boro-nitride

R. J. Cava, H. W. Zandbergen, B. Batlogg, H. Eisaki, H. Takagi, J. J. Krajewski, W. F. Peck, E. M. Gyorgy, S. Uchida

Research output: Contribution to journalArticlepeer-review

115 Scopus citations


RESEARCH into intermetallic superconductors has recently been reinvigorated by the discovery of superconductivity at 23 K in a Y-Pd-B-C quaternary alloy1 (tying with the long-standing inter-metallic record held by Nb3 Ge (ref. 2)), and at lower temperatures in other quaternary boro-carbide alloys based on Ni, Pd and Pt3-6. The crystal structure of these new intermetallic superconductors, typified by LuNi2B 2C (ref. 7), consists of one square layer of rock-salt-type LnC (where Ln stands for a rare-earth element) alternating with one layer of transition-metal boride tetrahedra. Here we report superconductivity at 12-13 K in a new quaternary intermetallic system, lanthanum nickel boro-nitride. We have determined the formula and crystal structure of superconducting La 3Ni2B2N3, and also of a related non-superconducting phase LaNiBN. The crystal structure of La3Ni 2B2N3 is related to that of LuM 2B2C, but consists of three rock-salt-type LaN layers alter-nating with tetrahedral Ni2B2 layers, an arrangement considerably more two-dimensional than is found for the superconducting boro-carbides. These discoveries strongly suggest that a large number of unusual superconducting intermetallic phases are yet to be found, based on materials more complex than have previously been considered as candidates for superconductivity.

Original languageEnglish (US)
Pages (from-to)245-247
Number of pages3
Issue number6503
StatePublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


Dive into the research topics of 'Superconductivity in lanthanum nickel boro-nitride'. Together they form a unique fingerprint.

Cite this