Magnetic excitations in ferromagnetic phase of MnP

Shin Ichiro Yano, Shinichi Itoh, Tetsuya Yokoo, Setsuo Satoh, Daichi Kawana, Yusuke Kousaka, Jun Akimitsu, Yasuo Endoh

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Inelastic neutron scattering experiments were performed on an intermetallic compound, MnP. We used a newly developed High Resolution Chopper Spectrometer, HRC, for energy transfers E≤75meV, besides various triple axis spectrometers; LTAS for energy transfers E≤2meV, TOPAN for E≤7.5meV and TAS-1 for E≤35meV. Spin wave excitations were observed in the ferromagnetic phase of MnP in the entire Brillouin zone along the a*- and b*-axes. The zone boundary energies of spin waves were determined to be around 60 meV along the a*-axis and around 75 meV along the b*-axis, and the dispersion relations showed two branches for both axes. The observed dispersion relations of spin waves were well described by an isotropic Heisenberg interaction adding a single ion anisotropy with two sub-lattices.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume347
DOIs
Publication statusPublished - 2013
Externally publishedYes

Fingerprint

Spin waves
magnons
Energy transfer
Spectrometers
excitation
Inelastic neutron scattering
energy transfer
neutron spectrometers
electric choppers
Intermetallics
wave excitation
Anisotropy
Brillouin zones
Ions
intermetallics
inelastic scattering
neutron scattering
spectrometers
anisotropy
high resolution

Keywords

  • Ferromagnet
  • Inelastic neutron scattering
  • Intermetallic compound
  • MnP
  • Phase transition
  • Spin waves

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Yano, S. I., Itoh, S., Yokoo, T., Satoh, S., Kawana, D., Kousaka, Y., ... Endoh, Y. (2013). Magnetic excitations in ferromagnetic phase of MnP. Journal of Magnetism and Magnetic Materials, 347, 33-38. https://doi.org/10.1016/j.jmmm.2013.07.019

Magnetic excitations in ferromagnetic phase of MnP. / Yano, Shin Ichiro; Itoh, Shinichi; Yokoo, Tetsuya; Satoh, Setsuo; Kawana, Daichi; Kousaka, Yusuke; Akimitsu, Jun; Endoh, Yasuo.

In: Journal of Magnetism and Magnetic Materials, Vol. 347, 2013, p. 33-38.

Research output: Contribution to journalArticle

Yano, SI, Itoh, S, Yokoo, T, Satoh, S, Kawana, D, Kousaka, Y, Akimitsu, J & Endoh, Y 2013, 'Magnetic excitations in ferromagnetic phase of MnP', Journal of Magnetism and Magnetic Materials, vol. 347, pp. 33-38. https://doi.org/10.1016/j.jmmm.2013.07.019
Yano, Shin Ichiro ; Itoh, Shinichi ; Yokoo, Tetsuya ; Satoh, Setsuo ; Kawana, Daichi ; Kousaka, Yusuke ; Akimitsu, Jun ; Endoh, Yasuo. / Magnetic excitations in ferromagnetic phase of MnP. In: Journal of Magnetism and Magnetic Materials. 2013 ; Vol. 347. pp. 33-38.
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AU - Yano, Shin Ichiro

AU - Itoh, Shinichi

AU - Yokoo, Tetsuya

AU - Satoh, Setsuo

AU - Kawana, Daichi

AU - Kousaka, Yusuke

AU - Akimitsu, Jun

AU - Endoh, Yasuo

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AB - Inelastic neutron scattering experiments were performed on an intermetallic compound, MnP. We used a newly developed High Resolution Chopper Spectrometer, HRC, for energy transfers E≤75meV, besides various triple axis spectrometers; LTAS for energy transfers E≤2meV, TOPAN for E≤7.5meV and TAS-1 for E≤35meV. Spin wave excitations were observed in the ferromagnetic phase of MnP in the entire Brillouin zone along the a*- and b*-axes. The zone boundary energies of spin waves were determined to be around 60 meV along the a*-axis and around 75 meV along the b*-axis, and the dispersion relations showed two branches for both axes. The observed dispersion relations of spin waves were well described by an isotropic Heisenberg interaction adding a single ion anisotropy with two sub-lattices.

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KW - Inelastic neutron scattering

KW - Intermetallic compound

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KW - Phase transition

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