Crystal field excitations in the singlet ground state compound Pr3 in

A. D. Christianson; J. M. Lawrence; K. C. Littrell; E. A. Goremychkin; A. I. Kolesnikov; J. D. Thompson; J. L. Sarrao

doi:10.1063/1.2709500

Crystal field excitations in the singlet ground state compound Pr3 in

A. D. Christianson, J. M. Lawrence, K. C. Littrell, E. A. Goremychkin, A. I. Kolesnikov, J. D. Thompson, J. L. Sarrao

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

9 Scopus citations

Abstract

Pr3 In exhibits an antiferromagnetic transition at ∼12 K. This transition appears to occur due to the exchange-generated admixture of higher lying crystal field levels into the singlet ground state. It is thus an example of an induced moment antiferromagnet. To provide detailed understanding of the magnetic behavior of Pr3 In, we have measured the magnetic excitation spectrum with inelastic neutron scattering experiments. We observe a clear dispersion of a crystal field excitation at 4 K. Above 100 K, the dispersion of the crystal field excitation has largely vanished and a crystal field scheme for Pr in a cubic site symmetry (in which the lowest states are a 1 singlet and a 4 triplet) provides a good approximation to the data.

Original language	English
Article number	09D505
Journal	Journal of Applied Physics
Volume	101
Issue number	9
DOIs	https://doi.org/10.1063/1.2709500
State	Published - 2007

Funding

Work at UC Irvine was supported by the U.S. Department of Energy (DOE) under Grant No. DE-FG03-03ER46036. Oak Ridge National Laboratory is managed by UT-Battelle, for the DOE under Contract No. DE-AC05-00OR22725. Work at Los Alamos was performed under the auspices of the DOE. The work performed at the Intense Pulsed Neutron Source was supported by the DOE, under Contract No. W-31-109-ENG-38.

Funders	Funder number
U.S. Department of Energy	DE-FG03-03ER46036
Oak Ridge National Laboratory
University of California, Irvine
UT-Battelle	DE-AC05-00OR22725, W-31-109-ENG-38

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title = "Crystal field excitations in the singlet ground state compound Pr3 in",

abstract = "Pr3 In exhibits an antiferromagnetic transition at ∼12 K. This transition appears to occur due to the exchange-generated admixture of higher lying crystal field levels into the singlet ground state. It is thus an example of an induced moment antiferromagnet. To provide detailed understanding of the magnetic behavior of Pr3 In, we have measured the magnetic excitation spectrum with inelastic neutron scattering experiments. We observe a clear dispersion of a crystal field excitation at 4 K. Above 100 K, the dispersion of the crystal field excitation has largely vanished and a crystal field scheme for Pr in a cubic site symmetry (in which the lowest states are a 1 singlet and a 4 triplet) provides a good approximation to the data.",

author = "Christianson, {A. D.} and Lawrence, {J. M.} and Littrell, {K. C.} and Goremychkin, {E. A.} and Kolesnikov, {A. I.} and Thompson, {J. D.} and Sarrao, {J. L.}",

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T1 - Crystal field excitations in the singlet ground state compound Pr3 in

AU - Christianson, A. D.

AU - Lawrence, J. M.

AU - Littrell, K. C.

AU - Goremychkin, E. A.

AU - Kolesnikov, A. I.

AU - Thompson, J. D.

AU - Sarrao, J. L.

PY - 2007

Y1 - 2007

N2 - Pr3 In exhibits an antiferromagnetic transition at ∼12 K. This transition appears to occur due to the exchange-generated admixture of higher lying crystal field levels into the singlet ground state. It is thus an example of an induced moment antiferromagnet. To provide detailed understanding of the magnetic behavior of Pr3 In, we have measured the magnetic excitation spectrum with inelastic neutron scattering experiments. We observe a clear dispersion of a crystal field excitation at 4 K. Above 100 K, the dispersion of the crystal field excitation has largely vanished and a crystal field scheme for Pr in a cubic site symmetry (in which the lowest states are a 1 singlet and a 4 triplet) provides a good approximation to the data.

AB - Pr3 In exhibits an antiferromagnetic transition at ∼12 K. This transition appears to occur due to the exchange-generated admixture of higher lying crystal field levels into the singlet ground state. It is thus an example of an induced moment antiferromagnet. To provide detailed understanding of the magnetic behavior of Pr3 In, we have measured the magnetic excitation spectrum with inelastic neutron scattering experiments. We observe a clear dispersion of a crystal field excitation at 4 K. Above 100 K, the dispersion of the crystal field excitation has largely vanished and a crystal field scheme for Pr in a cubic site symmetry (in which the lowest states are a 1 singlet and a 4 triplet) provides a good approximation to the data.

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VL - 101

JO - Journal of Applied Physics

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Crystal field excitations in the singlet ground state compound Pr3 in

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