Crystal structure and physical properties of Mg6Cu16Si7-type M6Ni16Si, for M = 
Mg, Sc, Ti, Nb, and Ta

Holman, K. L.; Morosan, E.; Casey, P. A.; Li, Lu; Ong, N. P.; Klimczuk, T.; Felser, C.; Cava, R. J.

doi:10.1016/j.materresbull.2007.09.023

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学術論文

Crystal structure and physical properties of Mg₆Cu₁₆Si₇-type M₆Ni₁₆Si, for M = Mg, Sc, Ti, Nb, and Ta

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引用

Holman, K. L., Morosan, E., Casey, P. A., Li, L., Ong, N. P., Klimczuk, T., Felser, C., & Cava, R. J. (2008). Crystal structure and physical properties of Mg₆Cu₁₆Si₇-type M₆Ni₁₆Si, for M = Mg, Sc, Ti, Nb, and Ta. Materials Research Bulletin, 43(1), 9-15. doi:10.1016/j.materresbull.2007.09.023.

引用: https://hdl.handle.net/11858/00-001M-0000-0018-8970-A

要旨

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. (c) 2007 Elsevier Ltd. All rights reserved.