Polarized neutron scattering study of the multiple order parameter system NdB4 [Polarized neutron scattering study on multiple order parameter system NdB4]

Metoki, Naoto; Yamauchi, Hiroki; Matsuda, Masaaki; Fernandez-Baca, Jaime A.; Watanuki, Ryuta; Hagihala, Masato

doi:10.1103/PhysRevB.97.174416

Title: Polarized neutron scattering study of the multiple order parameter system ${NdB}_{4}$ [Polarized neutron scattering study on multiple order parameter system ${NdB}_{4}$ ]

Abstract

Neutron polarization analysis has been carried out in order to clarify the magnetic structures of multiple order parameter f-electron system NdB₄. We confirmed the noncollinear “all-in all-out” structure (Γ₄) of the in-plane moment, which is in good agreement with our previous neutron powder diffraction study. We found that the magnetic moment along the c-axis m_c showed diagonally antiferromagnetic structure (Γ₁₀), inconsistent with previously reported “vortex” structure (Γ₂). The microscopic mixture of these two structures with ^→q₀=(0,0,0) appears in phase II and remains stable in phases III and IV, where an incommensurate modulation coexists. The unusual magnetic ordering is phenomenologically understood via Landau theory with the primary order parameter Γ₄ coupled with higher-order secondary order parameter Γ₁₀. The magnetic moments were estimated to be 1.8 ± 0.2 and 0.2 ± 0.05μ_B at T = 7.5K for Γ₄ and Γ₁₀, respectively. We also found a long-period incommensurate modulation of the ^→q₁=(0,0,1/2) antiferromagnetic structure of mc with the propagation ^→q_s1=(0.14,0.14,0.1) and ^→q_s2=(0.2,0,0.1) in phase III and IV, respectively. The amplitude of sinusoidal modulation was about m_c=1.0 ± 0.2μ_B at T=1.5 K. The local (0,0,1/2) structure consists of in-plane ferromagnetic and out-of-plane antiferromagnetic coupling of m_c, opposite to the coexisting Γ₁₀. The mc ofmore »« less

Authors:

Metoki, Naoto ^[1]; Yamauchi, Hiroki ^[2];

^[3];

^[3]; Watanuki, Ryuta ^[4]; Hagihala, Masato ^[5]

Japan Atomic Energy Agency (JAEA), Tokai (Japan); Ibaraki Uiv., Ibaraki (Japan)
Japan Atomic Energy Agency (JAEA), Tokai (Japan)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Yokohama National Univ., Yokohama (Japan)
Univ. of Tokyo, Chiba (Japan)

Publication Date:: Thu May 17 00:00:00 EDT 2018

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1440823

Alternate Identifier(s):: OSTI ID: 1437506

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 97; Journal Issue: 17; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Metoki, Naoto, Yamauchi, Hiroki, Matsuda, Masaaki, Fernandez-Baca, Jaime A., Watanuki, Ryuta, and Hagihala, Masato. Polarized neutron scattering study of the multiple order parameter system NdB4 [Polarized neutron scattering study on multiple order parameter system NdB4].  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevB.97.174416.

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                    Metoki, Naoto, Yamauchi, Hiroki, Matsuda, Masaaki, Fernandez-Baca, Jaime A., Watanuki, Ryuta, & Hagihala, Masato. Polarized neutron scattering study of the multiple order parameter system NdB4 [Polarized neutron scattering study on multiple order parameter system NdB4].  United States.  https://doi.org/10.1103/PhysRevB.97.174416

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                    Metoki, Naoto, Yamauchi, Hiroki, Matsuda, Masaaki, Fernandez-Baca, Jaime A., Watanuki, Ryuta, and Hagihala, Masato. Thu .  
"Polarized neutron scattering study of the multiple order parameter system NdB4 [Polarized neutron scattering study on multiple order parameter system NdB4]".  United States.  https://doi.org/10.1103/PhysRevB.97.174416.  https://www.osti.gov/servlets/purl/1440823.

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@article{osti_1440823,

  title        = {Polarized neutron scattering study of the multiple order parameter system NdB4 [Polarized neutron scattering study on multiple order parameter system NdB4]},

  author       = {Metoki, Naoto and Yamauchi, Hiroki and Matsuda, Masaaki and Fernandez-Baca, Jaime A. and Watanuki, Ryuta and Hagihala, Masato},

  abstractNote = {Neutron polarization analysis has been carried out in order to clarify the magnetic structures of multiple order parameter f-electron system NdB4. We confirmed the noncollinear “all-in all-out” structure (Γ4) of the in-plane moment, which is in good agreement with our previous neutron powder diffraction study. We found that the magnetic moment along the c-axis mc showed diagonally antiferromagnetic structure (Γ10), inconsistent with previously reported “vortex” structure (Γ2). The microscopic mixture of these two structures with →q0=(0,0,0) appears in phase II and remains stable in phases III and IV, where an incommensurate modulation coexists. The unusual magnetic ordering is phenomenologically understood via Landau theory with the primary order parameter Γ4 coupled with higher-order secondary order parameter Γ10. The magnetic moments were estimated to be 1.8 ± 0.2 and 0.2 ± 0.05μB at T = 7.5K for Γ4 and Γ10, respectively. We also found a long-period incommensurate modulation of the →q1=(0,0,1/2) antiferromagnetic structure of mc with the propagation →qs1=(0.14,0.14,0.1) and →qs2=(0.2,0,0.1) in phase III and IV, respectively. The amplitude of sinusoidal modulation was about mc=1.0 ± 0.2μB at T=1.5 K. The local (0,0,1/2) structure consists of in-plane ferromagnetic and out-of-plane antiferromagnetic coupling of mc, opposite to the coexisting Γ10. The mc of Γ10 is significantly enhanced up to 0.6μB at T=1.5 K, which is accompanied by the incommensurate modulations. As a result, the Landau phenomenological approach indicates that the higher-order magnetic and/or multipole interactions based on the pseudoquartet f-electron state play important roles.},

  doi          = {10.1103/PhysRevB.97.174416},

  journal      = {Physical Review B},

  number       = 17,

  volume       = 97,

  place        = {United States},

  year         = {Thu May 17 00:00:00 EDT 2018},

  month        = {Thu May 17 00:00:00 EDT 2018}

}

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https://doi.org/10.1103/PhysRevB.97.174416

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Cited by: 3 works

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Figures / Tables:

FIG. 1: (Color online) Spin polarized neutron scattering profile of the (1, 1, 0) refection of NdB₄ measured at (a) T = 1.5 K in phase IV, (b) T = 6.0 K in phase III, (c) T = 7.5 K in phase II, and (d) T = 20 K inmore »

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Works referenced in this record:

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Works referencing / citing this record:

Single-Crystal Growth of Metallic Rare-Earth Tetraborides by the Floating-Zone Technique
journal, April 2019

Brunt, Daniel; Ciomaga Hatnean, Monica; Petrenko, Oleg A.
Crystals, Vol. 9, Issue 4
DOI: 10.3390/cryst9040211

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Title: Polarized neutron scattering study of the multiple order parameter system NdB 4 [Polarized neutron scattering study on multiple order parameter system NdB 4 ]

Abstract

Citation Formats

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Title: Polarized neutron scattering study of the multiple order parameter system ${NdB}_{4}$ [Polarized neutron scattering study on multiple order parameter system ${NdB}_{4}$ ]

Direct Observation of Antiferroquadrupolar Ordering: Resonant X-Ray Scattering Study of ${DyB}_{2} C_{2}$
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Successive Magnetic Phase Transitions of Component Orderings in DyB ₄
journal, July 2011

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Quadrupolar Frustration in Shastry–Sutherland Lattice of DyB ₄ Studied by Resonant X-ray Scattering
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