Structure and unusual magnetic properties of YbMn0.17Si 1.88

Sebastian C. Peter; Christos D. Malliakas; Mercouri G. Kanatzidis

doi:10.1021/ic3024925

Structure and unusual magnetic properties of YbMn_0.17Si _1.88

Sebastian C. Peter, Christos D. Malliakas, Mercouri G. Kanatzidis^*

^*Corresponding author for this work

Chemistry

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

16 Scopus citations

Abstract

YbMn_0.17Si_1.88 was synthesized from the reaction of ytterbium, manganese, and silicon using indium as a flux. The average structure of YbMn_0.17Si_1.88 was refined in the monoclinic space group P2₁, with a = 4.0107(8) Å, b = 3.8380(8) Å, c = 14.458(3) Å, β = 97.97(3), R1/wR2 = 0.0296/0.0720. The structure can be described as the intergrowth of three AlB₂-type layers and one BaAl₄-type layer. Magnetic susceptibility measurements suggest that the ytterbium atoms in YbMn_xSi_2-x exist in a mixed valent or intermediate valent state. YbMn_0.17Si_1.88 shows weak antiferromagnetic ordering below ∼4.5 K. The magnetic interactions between the Mn and Yb atoms in YbMn_0.17Si_1.88 are evident from the magnetic susceptibility measurements performed at low field. A negative magnetization is observed on warming and a positive magnetization on cooling. The heat capacity data suggest moderate heavy fermion behavior.

Original language	English (US)
Pages (from-to)	4909-4915
Number of pages	7
Journal	Inorganic chemistry
Volume	52
Issue number	9
DOIs	https://doi.org/10.1021/ic3024925
State	Published - May 6 2013

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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10.1021/ic3024925

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title = "Structure and unusual magnetic properties of YbMn0.17Si 1.88",

abstract = "YbMn0.17Si1.88 was synthesized from the reaction of ytterbium, manganese, and silicon using indium as a flux. The average structure of YbMn0.17Si1.88 was refined in the monoclinic space group P21, with a = 4.0107(8) {\AA}, b = 3.8380(8) {\AA}, c = 14.458(3) {\AA}, β = 97.97(3), R1/wR2 = 0.0296/0.0720. The structure can be described as the intergrowth of three AlB2-type layers and one BaAl4-type layer. Magnetic susceptibility measurements suggest that the ytterbium atoms in YbMnxSi2-x exist in a mixed valent or intermediate valent state. YbMn0.17Si1.88 shows weak antiferromagnetic ordering below ∼4.5 K. The magnetic interactions between the Mn and Yb atoms in YbMn0.17Si1.88 are evident from the magnetic susceptibility measurements performed at low field. A negative magnetization is observed on warming and a positive magnetization on cooling. The heat capacity data suggest moderate heavy fermion behavior.",

author = "Peter, {Sebastian C.} and Malliakas, {Christos D.} and Kanatzidis, {Mercouri G.}",

year = "2013",

month = may,

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doi = "10.1021/ic3024925",

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AU - Peter, Sebastian C.

AU - Malliakas, Christos D.

AU - Kanatzidis, Mercouri G.

PY - 2013/5/6

Y1 - 2013/5/6

N2 - YbMn0.17Si1.88 was synthesized from the reaction of ytterbium, manganese, and silicon using indium as a flux. The average structure of YbMn0.17Si1.88 was refined in the monoclinic space group P21, with a = 4.0107(8) Å, b = 3.8380(8) Å, c = 14.458(3) Å, β = 97.97(3), R1/wR2 = 0.0296/0.0720. The structure can be described as the intergrowth of three AlB2-type layers and one BaAl4-type layer. Magnetic susceptibility measurements suggest that the ytterbium atoms in YbMnxSi2-x exist in a mixed valent or intermediate valent state. YbMn0.17Si1.88 shows weak antiferromagnetic ordering below ∼4.5 K. The magnetic interactions between the Mn and Yb atoms in YbMn0.17Si1.88 are evident from the magnetic susceptibility measurements performed at low field. A negative magnetization is observed on warming and a positive magnetization on cooling. The heat capacity data suggest moderate heavy fermion behavior.

AB - YbMn0.17Si1.88 was synthesized from the reaction of ytterbium, manganese, and silicon using indium as a flux. The average structure of YbMn0.17Si1.88 was refined in the monoclinic space group P21, with a = 4.0107(8) Å, b = 3.8380(8) Å, c = 14.458(3) Å, β = 97.97(3), R1/wR2 = 0.0296/0.0720. The structure can be described as the intergrowth of three AlB2-type layers and one BaAl4-type layer. Magnetic susceptibility measurements suggest that the ytterbium atoms in YbMnxSi2-x exist in a mixed valent or intermediate valent state. YbMn0.17Si1.88 shows weak antiferromagnetic ordering below ∼4.5 K. The magnetic interactions between the Mn and Yb atoms in YbMn0.17Si1.88 are evident from the magnetic susceptibility measurements performed at low field. A negative magnetization is observed on warming and a positive magnetization on cooling. The heat capacity data suggest moderate heavy fermion behavior.

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Structure and unusual magnetic properties of YbMn_0.17Si _1.88

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