TY - JOUR
T1 - Crystal structure and physical properties of Mg6Cu16Si7-type M6Ni16Si7, for M = Mg, Sc, Ti, Nb, and Ta
AU - Holman, K. L.
AU - Morosan, E.
AU - Casey, P. A.
AU - Li, Lu
AU - Ong, N. P.
AU - Klimczuk, T.
AU - Felser, C.
AU - Cava, R. J.
N1 - Funding Information:
This research was supported by the National Science Foundation, grant DMR-0213706, and by the Department of Energy Division of basic Energy Sciences, grant DE-FG02-98ER45706.
PY - 2008/1/8
Y1 - 2008/1/8
N2 - 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.
AB - 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.
KW - A. Intermetallic compounds
KW - A. Metals
KW - B. Chemical synthesis
KW - C. X-ray diffraction
KW - D. Superconductivity
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U2 - 10.1016/j.materresbull.2007.09.023
DO - 10.1016/j.materresbull.2007.09.023
M3 - Article
AN - SCOPUS:36048956399
SN - 0025-5408
VL - 43
SP - 9
EP - 15
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 1
ER -