Multinary intermetallics from molten Al. Synthesis of SmNiAl4Ge2 and YNiAl4Ge2. Possible spin frustration in separated triangular Sm3+ layers

B. Sieve; X. Chen; J. Cowen; P. Larson; S. D. Mahanti; M. G. Kanatzidis

doi:10.1021/cm990155+

Multinary intermetallics from molten Al. Synthesis of SmNiAl₄Ge₂ and YNiAl₄Ge₂. Possible spin frustration in separated triangular Sm³⁺ layers

B. Sieve^*, X. Chen, J. Cowen, P. Larson, S. D. Mahanti, M. G. Kanatzidis

^*Corresponding author for this work

Chemistry

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

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Abstract

SmNiAl₄Ge₂ crystallizes from molten Al containing Sm, Ni, and Ge. The compound crystallizes in the rhomohedral space group R3m with a = 4.1121(6) Å, c = 31.109(6) Å, and V = 455.5(1) Å3. The YNiAl₄Ge₂ analogue is also stable. The crystal structure consists of layers of [NiAl₄Ge₂]^3- separated by monolayers of hexagonally close-packed Sm³⁺ ions. The Ni atoms are surrounded by eight Al atoms in the structure. Each Sm atom has an octahedral environment of six Ge atoms. The magnetism of SmNiAl₄Ge₂ is unusual, possibly reflecting the presence of geometrical spin frustration. The magnetization exhibits a well-defined hysteresis loop, without signs of ferromagnetism. It also exhibits irreversibility in the field-cooled and zero-field-cooled magnetization but without the typical characteristic spin glass behavior.

Original language	English (US)
Pages (from-to)	2451-2455
Number of pages	5
Journal	Chemistry of Materials
Volume	11
Issue number	9
DOIs	https://doi.org/10.1021/cm990155+
State	Published - 1999

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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@article{a2468b1df404431e89a84a8885200adb,

title = "Multinary intermetallics from molten Al. Synthesis of SmNiAl4Ge2 and YNiAl4Ge2. Possible spin frustration in separated triangular Sm3+ layers",

abstract = "SmNiAl4Ge2 crystallizes from molten Al containing Sm, Ni, and Ge. The compound crystallizes in the rhomohedral space group R3m with a = 4.1121(6) {\AA}, c = 31.109(6) {\AA}, and V = 455.5(1) {\AA}3. The YNiAl4Ge2 analogue is also stable. The crystal structure consists of layers of [NiAl4Ge2]3- separated by monolayers of hexagonally close-packed Sm3+ ions. The Ni atoms are surrounded by eight Al atoms in the structure. Each Sm atom has an octahedral environment of six Ge atoms. The magnetism of SmNiAl4Ge2 is unusual, possibly reflecting the presence of geometrical spin frustration. The magnetization exhibits a well-defined hysteresis loop, without signs of ferromagnetism. It also exhibits irreversibility in the field-cooled and zero-field-cooled magnetization but without the typical characteristic spin glass behavior.",

author = "B. Sieve and X. Chen and J. Cowen and P. Larson and Mahanti, {S. D.} and Kanatzidis, {M. G.}",

year = "1999",

doi = "10.1021/cm990155+",

language = "English (US)",

volume = "11",

pages = "2451--2455",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

number = "9",

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TY - JOUR

T1 - Multinary intermetallics from molten Al. Synthesis of SmNiAl4Ge2 and YNiAl4Ge2. Possible spin frustration in separated triangular Sm3+ layers

AU - Sieve, B.

AU - Chen, X.

AU - Cowen, J.

AU - Larson, P.

AU - Mahanti, S. D.

AU - Kanatzidis, M. G.

PY - 1999

Y1 - 1999

N2 - SmNiAl4Ge2 crystallizes from molten Al containing Sm, Ni, and Ge. The compound crystallizes in the rhomohedral space group R3m with a = 4.1121(6) Å, c = 31.109(6) Å, and V = 455.5(1) Å3. The YNiAl4Ge2 analogue is also stable. The crystal structure consists of layers of [NiAl4Ge2]3- separated by monolayers of hexagonally close-packed Sm3+ ions. The Ni atoms are surrounded by eight Al atoms in the structure. Each Sm atom has an octahedral environment of six Ge atoms. The magnetism of SmNiAl4Ge2 is unusual, possibly reflecting the presence of geometrical spin frustration. The magnetization exhibits a well-defined hysteresis loop, without signs of ferromagnetism. It also exhibits irreversibility in the field-cooled and zero-field-cooled magnetization but without the typical characteristic spin glass behavior.

AB - SmNiAl4Ge2 crystallizes from molten Al containing Sm, Ni, and Ge. The compound crystallizes in the rhomohedral space group R3m with a = 4.1121(6) Å, c = 31.109(6) Å, and V = 455.5(1) Å3. The YNiAl4Ge2 analogue is also stable. The crystal structure consists of layers of [NiAl4Ge2]3- separated by monolayers of hexagonally close-packed Sm3+ ions. The Ni atoms are surrounded by eight Al atoms in the structure. Each Sm atom has an octahedral environment of six Ge atoms. The magnetism of SmNiAl4Ge2 is unusual, possibly reflecting the presence of geometrical spin frustration. The magnetization exhibits a well-defined hysteresis loop, without signs of ferromagnetism. It also exhibits irreversibility in the field-cooled and zero-field-cooled magnetization but without the typical characteristic spin glass behavior.

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Multinary intermetallics from molten Al. Synthesis of SmNiAl₄Ge₂ and YNiAl₄Ge₂. Possible spin frustration in separated triangular Sm³⁺ layers

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