Crystal structure and physical properties of Mg6Cu16Si7-type M6Ni16Si7, for M = Mg, Sc, Ti, Nb, and Ta

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

doi:10.1016/j.materresbull.2007.09.023

Crystal structure and physical properties of Mg₆Cu₁₆Si₇-type M₆Ni₁₆Si₇, for M = Mg, Sc, Ti, Nb, and Ta

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

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

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.

Original language	English (US)
Pages (from-to)	9-15
Number of pages	7
Journal	Materials Research Bulletin
Volume	43
Issue number	1
DOIs	https://doi.org/10.1016/j.materresbull.2007.09.023
State	Published - Jan 8 2008

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

A. Intermetallic compounds
A. Metals
B. Chemical synthesis
C. X-ray diffraction
D. Superconductivity

Access to Document

10.1016/j.materresbull.2007.09.023

Cite this

@article{75c384ae8c21464bb989974b64d56952,

title = "Crystal structure and physical properties of Mg6Cu16Si7-type M6Ni16Si7, for M = Mg, Sc, Ti, Nb, and Ta",

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.",

keywords = "A. Intermetallic compounds, A. Metals, B. Chemical synthesis, C. X-ray diffraction, D. Superconductivity",

author = "Holman, \{K. L.\} and E. Morosan and Casey, \{P. A.\} and Lu Li and Ong, \{N. P.\} and T. Klimczuk and C. Felser and Cava, \{R. J.\}",

note = "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.",

year = "2008",

month = jan,

day = "8",

doi = "10.1016/j.materresbull.2007.09.023",

language = "English (US)",

volume = "43",

pages = "9--15",

journal = "Materials Research Bulletin",

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publisher = "Elsevier Ltd",

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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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DO - 10.1016/j.materresbull.2007.09.023

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JO - Materials Research Bulletin

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