The effect of hydrogenation upon superconductivity in layered La3Ni2B2N3-delta

We report on hydrogenation of the layered boronitride superconductor La3Ni2B2N3-delta. Bulk specimen have been hydrogenated at 27bar and temperatures ranging from 70 to yielding a series La3Ni2B2N3-deltaHx with x=0.6 and 1.0 which exhibits a rather small volume expansion, DeltaV/V0.05%/f.u. hydrogen...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2006-05, Vol.378-380, p.904-905
Main Authors: Sieberer, M, Michor, H, Manalo, S, Mea, M Della, Hilscher, G, Grytsiv, A, Rogl, P
Format: Article
Language:English
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Summary:We report on hydrogenation of the layered boronitride superconductor La3Ni2B2N3-delta. Bulk specimen have been hydrogenated at 27bar and temperatures ranging from 70 to yielding a series La3Ni2B2N3-deltaHx with x=0.6 and 1.0 which exhibits a rather small volume expansion, DeltaV/V0.05%/f.u. hydrogen. Specific heat and magnetic susceptibility studies of samples with x=,0.6, and 1.0 reveal a clear bulk effect of hydrogenation upon the superconducting properties, e.g. an increase of Tc by about 0.5K, as well as an increase of Hc(T) and Hc2(T).
ISSN:0921-4526
DOI:10.1016/j.physb.2006.01.420