Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl4Si2 and CeIrAl4Si2

N. J. Ghimire; S. Calder; M. Janoschek; E. D. Bauer

doi:10.1088/0953-8984/27/24/245603

Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl₄Si₂ and CeIrAl₄Si₂

N. J. Ghimire
, S. Calder
, M. Janoschek
, E. D. Bauer

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

11 Scopus citations

Abstract

We have investigated the magnetic ground state of the antiferromagnetic Kondo-lattice compounds CeMAl₄Si₂(M = Rh, Ir) using neutron powder diffraction. Although both of these compounds show two magnetic transitions T_N1 and T_N2 in the bulk properties measurements, evidence for magnetic long-range order was only found below the lower transition T_N2. Analysis of the diffraction profiles reveals a commensurate antiferromagnetic structure with a propagation vector k = (0, 0, 1/2). The magnetic moment in the ordered state of CeRhAl₄Si₂ and CeIrAl₄Si₂ were determined to be 1.14(2) and 1.41(3) μ_B Ce^-1, respectively, and are parallel to the crystallographic c-axis in agreement with magnetic susceptibility measurements.

Original language	English
Article number	245603
Journal	Journal of Physics Condensed Matter
Volume	27
Issue number	24
DOIs	https://doi.org/10.1088/0953-8984/27/24/245603
State	Published - Jun 24 2015

Access to Document

10.1088/0953-8984/27/24/245603

Cite this

@article{8ec8498b9e984478a36dd495a2d3e9e3,

title = "Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl4Si2 and CeIrAl4Si2",

abstract = "We have investigated the magnetic ground state of the antiferromagnetic Kondo-lattice compounds CeMAl4Si2(M = Rh, Ir) using neutron powder diffraction. Although both of these compounds show two magnetic transitions TN1 and TN2 in the bulk properties measurements, evidence for magnetic long-range order was only found below the lower transition TN2. Analysis of the diffraction profiles reveals a commensurate antiferromagnetic structure with a propagation vector k = (0, 0, 1/2). The magnetic moment in the ordered state of CeRhAl4Si2 and CeIrAl4Si2 were determined to be 1.14(2) and 1.41(3) μB Ce-1, respectively, and are parallel to the crystallographic c-axis in agreement with magnetic susceptibility measurements.",

author = "Ghimire, \{N. J.\} and S. Calder and M. Janoschek and Bauer, \{E. D.\}",

note = "Publisher Copyright: {\textcopyright} 2015 IOP Publishing Ltd.",

year = "2015",

month = jun,

day = "24",

doi = "10.1088/0953-8984/27/24/245603",

language = "English",

volume = "27",

journal = "Journal of Physics Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing",

number = "24",

}

TY - JOUR

T1 - Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl4Si2 and CeIrAl4Si2

AU - Ghimire, N. J.

AU - Calder, S.

AU - Janoschek, M.

AU - Bauer, E. D.

PY - 2015/6/24

Y1 - 2015/6/24

N2 - We have investigated the magnetic ground state of the antiferromagnetic Kondo-lattice compounds CeMAl4Si2(M = Rh, Ir) using neutron powder diffraction. Although both of these compounds show two magnetic transitions TN1 and TN2 in the bulk properties measurements, evidence for magnetic long-range order was only found below the lower transition TN2. Analysis of the diffraction profiles reveals a commensurate antiferromagnetic structure with a propagation vector k = (0, 0, 1/2). The magnetic moment in the ordered state of CeRhAl4Si2 and CeIrAl4Si2 were determined to be 1.14(2) and 1.41(3) μB Ce-1, respectively, and are parallel to the crystallographic c-axis in agreement with magnetic susceptibility measurements.

AB - We have investigated the magnetic ground state of the antiferromagnetic Kondo-lattice compounds CeMAl4Si2(M = Rh, Ir) using neutron powder diffraction. Although both of these compounds show two magnetic transitions TN1 and TN2 in the bulk properties measurements, evidence for magnetic long-range order was only found below the lower transition TN2. Analysis of the diffraction profiles reveals a commensurate antiferromagnetic structure with a propagation vector k = (0, 0, 1/2). The magnetic moment in the ordered state of CeRhAl4Si2 and CeIrAl4Si2 were determined to be 1.14(2) and 1.41(3) μB Ce-1, respectively, and are parallel to the crystallographic c-axis in agreement with magnetic susceptibility measurements.

UR - https://www.scopus.com/pages/publications/84930959184

U2 - 10.1088/0953-8984/27/24/245603

DO - 10.1088/0953-8984/27/24/245603

M3 - Article

AN - SCOPUS:84930959184

SN - 0953-8984

VL - 27

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 24

M1 - 245603

ER -

Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl₄Si₂ and CeIrAl₄Si₂

Abstract

Access to Document

Other files and links

Fingerprint

Cite this