New 4234-type intermetallic borocarbides: Synthesis, structure, and magnetic properties

J. R. Link; S. M. Loureiro; C. Kealhofer; H. W. Zandbergen; R. J. Cava

doi:10.1006/jssc.2001.9469

New 4234-type intermetallic borocarbides: Synthesis, structure, and magnetic properties

J. R. Link, S. M. Loureiro, C. Kealhofer, H. W. Zandbergen, R. J. Cava

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Abstract

New 4234-type compounds, structurally related to the n = 4 member of the (LnC)_nNi₂B₂ homologous series of intermetallic borocarbides, were synthesized by arc-melting. Here we report that this structure type, previously observed only for Ni-based compounds, can be synthesized for a large number of transition elements. Further, we find it to be stable for medium through small lanthanides. The compounds have formulas Y₄T₂B₃C₄ [T = Fe, Co, Ni, Ru, Rh, and Ir], Ln₄T₂B₃C₄ [Ln = Er, Dy, and Gd; T = Fe and Co], Lu₄Ni₂B₃C₄, and Sc₄Ni₂B₃C₄. The unit cells are pseudo-tetragonal, with lattice parameters ranging from a = 3.348(1) Å, c = 25.90(1) Å for Sc₄Ni₂B₃C₄ to a = 3.624(1) Å, c = 26.63(1) Å for Y₄Rh₂B₃C₄. Structural investigation by exit-wave reconstruction is reported, showing the presence of twinning on the unit cell scale. The phases show either Curie-Weiss behavior with very small magnetic moments per transition metalatom or temperature-independent paramagnetism.

Original language	English (US)
Pages (from-to)	246-251
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	164
Issue number	2
DOIs	https://doi.org/10.1006/jssc.2001.9469
State	Published - 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1006/jssc.2001.9469

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@article{e20e1c84c2df4f0d8c743e5451c79597,

title = "New 4234-type intermetallic borocarbides: Synthesis, structure, and magnetic properties",

abstract = "New 4234-type compounds, structurally related to the n = 4 member of the (LnC)nNi2B2 homologous series of intermetallic borocarbides, were synthesized by arc-melting. Here we report that this structure type, previously observed only for Ni-based compounds, can be synthesized for a large number of transition elements. Further, we find it to be stable for medium through small lanthanides. The compounds have formulas Y4T2B3C4 [T = Fe, Co, Ni, Ru, Rh, and Ir], Ln4T2B3C4 [Ln = Er, Dy, and Gd; T = Fe and Co], Lu4Ni2B3C4, and Sc4Ni2B3C4. The unit cells are pseudo-tetragonal, with lattice parameters ranging from a = 3.348(1) {\AA}, c = 25.90(1) {\AA} for Sc4Ni2B3C4 to a = 3.624(1) {\AA}, c = 26.63(1) {\AA} for Y4Rh2B3C4. Structural investigation by exit-wave reconstruction is reported, showing the presence of twinning on the unit cell scale. The phases show either Curie-Weiss behavior with very small magnetic moments per transition metalatom or temperature-independent paramagnetism.",

author = "Link, {J. R.} and Loureiro, {S. M.} and C. Kealhofer and Zandbergen, {H. W.} and Cava, {R. J.}",

note = "Funding Information: The Department of Energy funded this research under grant number DE-FG02-98-ER45706. S.M.L. thanks JNICT/PRAXIS XX/BPD18834/98.",

year = "2002",

doi = "10.1006/jssc.2001.9469",

language = "English (US)",

volume = "164",

pages = "246--251",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "2",

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TY - JOUR

T1 - New 4234-type intermetallic borocarbides

T2 - Synthesis, structure, and magnetic properties

AU - Link, J. R.

AU - Loureiro, S. M.

AU - Kealhofer, C.

AU - Zandbergen, H. W.

AU - Cava, R. J.

N1 - Funding Information: The Department of Energy funded this research under grant number DE-FG02-98-ER45706. S.M.L. thanks JNICT/PRAXIS XX/BPD18834/98.

PY - 2002

Y1 - 2002

N2 - New 4234-type compounds, structurally related to the n = 4 member of the (LnC)nNi2B2 homologous series of intermetallic borocarbides, were synthesized by arc-melting. Here we report that this structure type, previously observed only for Ni-based compounds, can be synthesized for a large number of transition elements. Further, we find it to be stable for medium through small lanthanides. The compounds have formulas Y4T2B3C4 [T = Fe, Co, Ni, Ru, Rh, and Ir], Ln4T2B3C4 [Ln = Er, Dy, and Gd; T = Fe and Co], Lu4Ni2B3C4, and Sc4Ni2B3C4. The unit cells are pseudo-tetragonal, with lattice parameters ranging from a = 3.348(1) Å, c = 25.90(1) Å for Sc4Ni2B3C4 to a = 3.624(1) Å, c = 26.63(1) Å for Y4Rh2B3C4. Structural investigation by exit-wave reconstruction is reported, showing the presence of twinning on the unit cell scale. The phases show either Curie-Weiss behavior with very small magnetic moments per transition metalatom or temperature-independent paramagnetism.

AB - New 4234-type compounds, structurally related to the n = 4 member of the (LnC)nNi2B2 homologous series of intermetallic borocarbides, were synthesized by arc-melting. Here we report that this structure type, previously observed only for Ni-based compounds, can be synthesized for a large number of transition elements. Further, we find it to be stable for medium through small lanthanides. The compounds have formulas Y4T2B3C4 [T = Fe, Co, Ni, Ru, Rh, and Ir], Ln4T2B3C4 [Ln = Er, Dy, and Gd; T = Fe and Co], Lu4Ni2B3C4, and Sc4Ni2B3C4. The unit cells are pseudo-tetragonal, with lattice parameters ranging from a = 3.348(1) Å, c = 25.90(1) Å for Sc4Ni2B3C4 to a = 3.624(1) Å, c = 26.63(1) Å for Y4Rh2B3C4. Structural investigation by exit-wave reconstruction is reported, showing the presence of twinning on the unit cell scale. The phases show either Curie-Weiss behavior with very small magnetic moments per transition metalatom or temperature-independent paramagnetism.

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JO - Journal of Solid State Chemistry

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New 4234-type intermetallic borocarbides: Synthesis, structure, and magnetic properties

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