Neutron diffraction study of the ternary transition metal Zintl compound Ca14MnSb11

Hyungrak Kim; Qingzhen Huang; Jeffrey W. Lynn; Susan M. Kauzlarich

doi:10.1006/jssc.2002.9705

Neutron diffraction study of the ternary transition metal Zintl compound Ca₁₄MnSb₁₁

Hyungrak Kim, Qingzhen Huang, Jeffrey W. Lynn, Susan M. Kauzlarich

Chemistry

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

8 Scopus citations

Abstract

The magnetic ordering of the tetragonal Ca₁₄MnSb₁₁ compound (space group I4₁/acd) has been determined by high-resolution neutron diffraction on powder samples. Neutron data were obtained at temperatures of 1.4, 10, 95K, and room temperature. Refinement of the magnetic structure reveals a ferromagnetic ordering of Mn magnetic moments lying in the a-b plane below the T_C of 63 K. The low-temperature-ordered magnetic moment on the Mn ion is 3.4(2) μB at 1.4 K. The results are confirmed by magnetic susceptibility measurements, which show that the easy magnetization direction of the compound is perpendicular to the c-axis and the system orders ferromagnetically at 63K, in good agreement with neutron diffraction results. A large negative magnetoresistance effect (Δρ/ρ(H) = -34.4%) at the magnetic transition temperature is observed in applied magnetic fields up to 6 T.

Original language	English (US)
Pages (from-to)	162-168
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	168
Issue number	1
DOIs	https://doi.org/10.1006/jssc.2002.9705
State	Published - Oct 2002

Keywords

Colossal magnetoresistance
Magnetic structure
Magnetocrystalline anisotropy
Neutron diffraction
Ternary transition metal zintl compound

ASJC Scopus subject areas

Inorganic Chemistry
Physical and Theoretical Chemistry
Materials Chemistry

Access to Document

10.1006/jssc.2002.9705

Cite this

@article{096d6cb468674722b4eb03faad573f95,

title = "Neutron diffraction study of the ternary transition metal Zintl compound Ca14MnSb11 ",

abstract = "The magnetic ordering of the tetragonal Ca14MnSb11 compound (space group I41/acd) has been determined by high-resolution neutron diffraction on powder samples. Neutron data were obtained at temperatures of 1.4, 10, 95K, and room temperature. Refinement of the magnetic structure reveals a ferromagnetic ordering of Mn magnetic moments lying in the a-b plane below the TC of 63 K. The low-temperature-ordered magnetic moment on the Mn ion is 3.4(2) μB at 1.4 K. The results are confirmed by magnetic susceptibility measurements, which show that the easy magnetization direction of the compound is perpendicular to the c-axis and the system orders ferromagnetically at 63K, in good agreement with neutron diffraction results. A large negative magnetoresistance effect (Δρ/ρ(H) = -34.4%) at the magnetic transition temperature is observed in applied magnetic fields up to 6 T.",

keywords = "Colossal magnetoresistance, Magnetic structure, Magnetocrystalline anisotropy, Neutron diffraction, Ternary transition metal zintl compound",

author = "Hyungrak Kim and Qingzhen Huang and Lynn, {Jeffrey W.} and Kauzlarich, {Susan M.}",

year = "2002",

month = oct,

doi = "10.1006/jssc.2002.9705",

language = "English (US)",

volume = "168",

pages = "162--168",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

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TY - JOUR

T1 - Neutron diffraction study of the ternary transition metal Zintl compound Ca14MnSb11

AU - Kim, Hyungrak

AU - Huang, Qingzhen

AU - Lynn, Jeffrey W.

AU - Kauzlarich, Susan M.

PY - 2002/10

Y1 - 2002/10

N2 - The magnetic ordering of the tetragonal Ca14MnSb11 compound (space group I41/acd) has been determined by high-resolution neutron diffraction on powder samples. Neutron data were obtained at temperatures of 1.4, 10, 95K, and room temperature. Refinement of the magnetic structure reveals a ferromagnetic ordering of Mn magnetic moments lying in the a-b plane below the TC of 63 K. The low-temperature-ordered magnetic moment on the Mn ion is 3.4(2) μB at 1.4 K. The results are confirmed by magnetic susceptibility measurements, which show that the easy magnetization direction of the compound is perpendicular to the c-axis and the system orders ferromagnetically at 63K, in good agreement with neutron diffraction results. A large negative magnetoresistance effect (Δρ/ρ(H) = -34.4%) at the magnetic transition temperature is observed in applied magnetic fields up to 6 T.

AB - The magnetic ordering of the tetragonal Ca14MnSb11 compound (space group I41/acd) has been determined by high-resolution neutron diffraction on powder samples. Neutron data were obtained at temperatures of 1.4, 10, 95K, and room temperature. Refinement of the magnetic structure reveals a ferromagnetic ordering of Mn magnetic moments lying in the a-b plane below the TC of 63 K. The low-temperature-ordered magnetic moment on the Mn ion is 3.4(2) μB at 1.4 K. The results are confirmed by magnetic susceptibility measurements, which show that the easy magnetization direction of the compound is perpendicular to the c-axis and the system orders ferromagnetically at 63K, in good agreement with neutron diffraction results. A large negative magnetoresistance effect (Δρ/ρ(H) = -34.4%) at the magnetic transition temperature is observed in applied magnetic fields up to 6 T.

KW - Colossal magnetoresistance

KW - Magnetic structure

KW - Magnetocrystalline anisotropy

KW - Neutron diffraction

KW - Ternary transition metal zintl compound

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