K

Tourismus, Hotellerie und Gastronomie von A bis Z Pub Date : 1920-12-31 DOI:10.1002/9781119548836.ch11

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

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引用次数: 0

摘要

研究了五种化合物的磁性和超导性，它们都具有非磁性镍和带结构，包括平带和陡带。本文报道了M6Ni16Si7 (M = Mg, Sc, Ti, Nb, Ta)的合成和晶体结构。所有化合物都以Mg6Cu16Si7结构类型形成。电阻测量也报道了M6Ni16Si7 (M = Mg, Sc, Ti和Nb)下降到0.3 K，所有四种都显示金属导电性。没有观察到超导性。所有化合物的磁化测量结果都显示出与温度无关的顺磁性，其中Mg6Ni16Si7和Sc6Ni16Si7的低温顺磁性有增强的趋势。

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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.

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Tourismus, Hotellerie und Gastronomie von A bis Z

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