Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering

R. J. McQueeney; J. Q. Yan; S. Chang; J. Ma

doi:10.1103/PhysRevB.78.184417

Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering

R. J. McQueeney, J. Q. Yan, S. Chang, J. Ma

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28 Scopus citations

Abstract

A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for LaMnO3 (A -type antiferromagnet), LaVO3 (C type), and LaFeO3 (G type) and compared to Heisenberg model calculations. The anisotropy of in-plane (Jab) and out-of-plane (Jc) exchange constants can be obtained from the data. The procedure quickly determines the magnetic exchange interactions without the need for single-crystal dispersion measurements and allows for rapid systematic studies of the evolution of magnetism in perovskite systems.

Original language	English
Article number	184417
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.78.184417
State	Published - Nov 17 2008
Externally published	Yes

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10.1103/PhysRevB.78.184417

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title = "Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering",

abstract = "A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for LaMnO3 (A -type antiferromagnet), LaVO3 (C type), and LaFeO3 (G type) and compared to Heisenberg model calculations. The anisotropy of in-plane (Jab) and out-of-plane (Jc) exchange constants can be obtained from the data. The procedure quickly determines the magnetic exchange interactions without the need for single-crystal dispersion measurements and allows for rapid systematic studies of the evolution of magnetism in perovskite systems.",

author = "McQueeney, {R. J.} and Yan, {J. Q.} and S. Chang and J. Ma",

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AU - McQueeney, R. J.

AU - Yan, J. Q.

AU - Chang, S.

AU - Ma, J.

PY - 2008/11/17

Y1 - 2008/11/17

N2 - A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for LaMnO3 (A -type antiferromagnet), LaVO3 (C type), and LaFeO3 (G type) and compared to Heisenberg model calculations. The anisotropy of in-plane (Jab) and out-of-plane (Jc) exchange constants can be obtained from the data. The procedure quickly determines the magnetic exchange interactions without the need for single-crystal dispersion measurements and allows for rapid systematic studies of the evolution of magnetism in perovskite systems.

AB - A procedure is outlined for the determination of magnetic exchange constants in anisotropic perovskite anitferromagnets using powder inelastic neutron scattering. Spin-wave densities of states are measured using time-of-flight inelastic neutron scattering for LaMnO3 (A -type antiferromagnet), LaVO3 (C type), and LaFeO3 (G type) and compared to Heisenberg model calculations. The anisotropy of in-plane (Jab) and out-of-plane (Jc) exchange constants can be obtained from the data. The procedure quickly determines the magnetic exchange interactions without the need for single-crystal dispersion measurements and allows for rapid systematic studies of the evolution of magnetism in perovskite systems.

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Determination of the exchange anisotropy in perovskite antiferromagnets using powder inelastic neutron scattering

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