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Crystal Structure and Physical Properties of Mg6Cu16Si7-type M6Ni16Si7, for M = Mg, Sc, Ti, Nb, and Ta | | K. L. Holman
; E. Morosan
; Lu Li
; N.P. Ong
; T. Klimczuk
; R. J. Cava
; | | Date: |
1 Aug 2007 | | Abstract: | Five compounds were investigated for magnetic character and
superconductivity, all with non-magnetic nickel and band structures containing
flat bands and steep bands. The syntheses and crystal structures, refined by
powder X-ray diffraction, are reported for M6Ni16Si7, where M = Mg, Sc, Ti, Nb,
and Ta. All compounds form in the Mg6Cu16Si7 structure type. Resistance
measurements are also reported on M6Ni16Si7 (M = Mg, Sc, Ti, and Nb) down to
0.3 K, with all four showing metallic conductivity. No superconductivity is
observed. Magnetization measurements for all compounds reveal essentially
temperature independent paramagnetism, with a tendency toward more enhanced low
temperature paramagnetism for the cases of Mg6Ni16Si7 and Sc6Ni16Si7. | | Source: | arXiv, 0708.0179 | | Services: | Forum | Review | PDF | Favorites | |
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