Neutron Scattering Studies of LiCoPO4 & LiMnPO4

Wei Tian; Jiying Li; Haifeng Li; Jeffrey W. Lynn; Jerel L. Zarestky; David Vaknin

doi:10.1088/1742-6596/251/1/012005

Neutron Scattering Studies of LiCoPO₄ & LiMnPO₄

Wei Tian, Jiying Li, Haifeng Li, Jeffrey W. Lynn, Jerel L. Zarestky, David Vaknin

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

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Abstract

LiCoPO⁴ (T_N ≈ 21.8 K) & LiMnPO₄ (T_N ≈ 34 K) are antiferromagnetic insulators exhibiting large magnetoelectric effects. We performed inelastic neutron scattering (INS) experiments to investigate the spin dynamics of these systems and analyzed the measured magnetic spectra by linear spin-wave theory, taking into account intra- and inter-plane nearest, next nearest neighbor magnetic exchange interactions and single ion anisotropy. The INS results indicate that the single ion anisotropy in LiCoPO₄ is comparable to the nearest-neighbor magnetic exchange interaction rendering Ising-type behavior of LiCoPO₄. Neutron diffraction studies of LiMnPO₄ in applied magnetic fields reveal a spin-flop transition at ∼ 3.5 Tesla with characteristics of a second order phase transition.

Original language	English
Article number	012005
Journal	Journal of Physics: Conference Series
Volume	251
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/251/1/012005
State	Published - 2010
Externally published	Yes

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title = "Neutron Scattering Studies of LiCoPO4 & LiMnPO4",

abstract = "LiCoPO4 (TN ≈ 21.8 K) & LiMnPO4 (TN ≈ 34 K) are antiferromagnetic insulators exhibiting large magnetoelectric effects. We performed inelastic neutron scattering (INS) experiments to investigate the spin dynamics of these systems and analyzed the measured magnetic spectra by linear spin-wave theory, taking into account intra- and inter-plane nearest, next nearest neighbor magnetic exchange interactions and single ion anisotropy. The INS results indicate that the single ion anisotropy in LiCoPO4 is comparable to the nearest-neighbor magnetic exchange interaction rendering Ising-type behavior of LiCoPO4. Neutron diffraction studies of LiMnPO4 in applied magnetic fields reveal a spin-flop transition at ∼ 3.5 Tesla with characteristics of a second order phase transition.",

author = "Wei Tian and Jiying Li and Haifeng Li and Lynn, {Jeffrey W.} and Zarestky, {Jerel L.} and David Vaknin",

year = "2010",

doi = "10.1088/1742-6596/251/1/012005",

language = "English",

volume = "251",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

number = "1",

}

TY - JOUR

T1 - Neutron Scattering Studies of LiCoPO4 & LiMnPO4

AU - Tian, Wei

AU - Li, Jiying

AU - Li, Haifeng

AU - Lynn, Jeffrey W.

AU - Zarestky, Jerel L.

AU - Vaknin, David

PY - 2010

Y1 - 2010

N2 - LiCoPO4 (TN ≈ 21.8 K) & LiMnPO4 (TN ≈ 34 K) are antiferromagnetic insulators exhibiting large magnetoelectric effects. We performed inelastic neutron scattering (INS) experiments to investigate the spin dynamics of these systems and analyzed the measured magnetic spectra by linear spin-wave theory, taking into account intra- and inter-plane nearest, next nearest neighbor magnetic exchange interactions and single ion anisotropy. The INS results indicate that the single ion anisotropy in LiCoPO4 is comparable to the nearest-neighbor magnetic exchange interaction rendering Ising-type behavior of LiCoPO4. Neutron diffraction studies of LiMnPO4 in applied magnetic fields reveal a spin-flop transition at ∼ 3.5 Tesla with characteristics of a second order phase transition.

AB - LiCoPO4 (TN ≈ 21.8 K) & LiMnPO4 (TN ≈ 34 K) are antiferromagnetic insulators exhibiting large magnetoelectric effects. We performed inelastic neutron scattering (INS) experiments to investigate the spin dynamics of these systems and analyzed the measured magnetic spectra by linear spin-wave theory, taking into account intra- and inter-plane nearest, next nearest neighbor magnetic exchange interactions and single ion anisotropy. The INS results indicate that the single ion anisotropy in LiCoPO4 is comparable to the nearest-neighbor magnetic exchange interaction rendering Ising-type behavior of LiCoPO4. Neutron diffraction studies of LiMnPO4 in applied magnetic fields reveal a spin-flop transition at ∼ 3.5 Tesla with characteristics of a second order phase transition.

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U2 - 10.1088/1742-6596/251/1/012005

DO - 10.1088/1742-6596/251/1/012005

M3 - Article

AN - SCOPUS:79953751427

SN - 1742-6588

VL - 251

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012005

ER -

Neutron Scattering Studies of LiCoPO₄ & LiMnPO₄

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