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| STRUCTURE OF THE 13-K SUPERCONDUCTOR LA3NI2B2N3 AND THE RELATED PHASE LANIBN |
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| Author(s): ZANDBERGEN HW, JANSEN J, CAVA RJ, KRAJEWSKI JJ, PECK WF |
| Source: NATURE Volume: 372 Issue: 6508 Pages: 759-761 Published: DEC 22 1994 |
| Times Cited: 52 References: 9 |
| Abstract: THE recent discovery of superconductivity in a number of alloys containing boron and carbon has revived interest in the field of intermetallic superconductors(1-3). Although two structural forms have now been identified(4-6), most of the new intermetallic superconductors have a crystal structure typified by that of the quaternary alloy LuNi2B2C, in which layers of rock-salt-structured LuC alternate with nickel boride tetrahedra(4,5). The range of superconducting intermetallic compounds was extended recently by the discovery of superconductivity in a system of quaternary boro-nitride alloys, La-Ni-B-N (ref. 7). Here we report the structure of the superconducting phase in this system, La3Ni2B2N3, together with that of the related non-superconducting phase, LaNiBN. We find that these two phases are members of a homologous series (LaN)(n)(Ni2B2), with n = 3 and n = 2, respectively. Furthermore, our samples contain planar defects that suggest the existence of phases with larger n. Varying the number, n, of LaN layers within this system might thus provide a way to investigate the effect of dimensionality on the superconducting properties of intermetallics. |
| Document Type: Article |
| Language: English |
| Reprint Address: ZANDBERGEN, HW (reprint author), DELFT UNIV TECHNOL, NATL CTR HIGH RESOLUT ELECTRON MICROSCOPY, MAT SCI LAB, ROTTERDAMSEWEG 137, 2628 AL DELFT, NETHERLANDS |
Addresses:
1. UNIV AMSTERDAM, CRYSTALLOG LAB, 1018 WV AMSTERDAM, NETHERLANDS
2. AT&T BELL LABS, MURRAY HILL, NJ 07974 USA |
| Publisher: MACMILLAN MAGAZINES LTD, PORTERS SOUTH, 4 CRINAN ST, LONDON, ENGLAND N1 9XW |
| Subject Category: Multidisciplinary Sciences |
| IDS Number: PY212 |
| ISSN: 0028-0836 |
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