Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e

Shinichi Itoh; Yasuo Endoh; Tetsuya Yokoo; Daichi Kawana; Yoshio Kaneko; Yoshinori Tokura; Masaki Fujita

doi:10.7566/JPSJ.82.043001

Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e

Shinichi Itoh, Yasuo Endoh, Tetsuya Yokoo, Daichi Kawana, Yoshio Kaneko, Yoshinori Tokura, Masaki Fujita

IMR - Materials Property Division

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

16 Citations (Scopus)

Abstract

The neutron Brillouin scattering (NBS) method, which was developed using advanced neutron sources, was extended to an intense pulsed spallation neutron source. The feasibility of this method was demonstrated by observing ferromagnetic spin waves in La_0.8Sr_0.2MnO₃ and SrRuO₃ powders. Gapless spin-wave excitations were observed in La_0.8Sr_0.2MnO₃, which were continuously extrapolated to the lower scattering vector Q from previous results using single crystals. The novel result is a well-defined quadratic Q dependence in the spin-wave dispersion curve with a large energy gap in SrRuO₃.

Original language	English
Article number	043001
Journal	Journal of the Physical Society of Japan
Volume	82
Issue number	4
DOIs	https://doi.org/10.7566/JPSJ.82.043001
Publication status	Published - 2013 Apr

Keywords

Ferromagnet
Inelastic neutron scattering
Neutron Brillouin scattering
Pulsed neutron
Spin waves

Access to Document

10.7566/JPSJ.82.043001

Cite this

@article{07fe3bf2dd9f4c15ad652766c62ebf31,

title = "Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e",

abstract = "The neutron Brillouin scattering (NBS) method, which was developed using advanced neutron sources, was extended to an intense pulsed spallation neutron source. The feasibility of this method was demonstrated by observing ferromagnetic spin waves in La0.8Sr0.2MnO3 and SrRuO3 powders. Gapless spin-wave excitations were observed in La0.8Sr0.2MnO3, which were continuously extrapolated to the lower scattering vector Q from previous results using single crystals. The novel result is a well-defined quadratic Q dependence in the spin-wave dispersion curve with a large energy gap in SrRuO3.",

keywords = "Ferromagnet, Inelastic neutron scattering, Neutron Brillouin scattering, Pulsed neutron, Spin waves",

author = "Shinichi Itoh and Yasuo Endoh and Tetsuya Yokoo and Daichi Kawana and Yoshio Kaneko and Yoshinori Tokura and Masaki Fujita",

year = "2013",

month = apr,

doi = "10.7566/JPSJ.82.043001",

language = "English",

volume = "82",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "The Physical Society of Japan",

number = "4",

}

TY - JOUR

T1 - Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e

AU - Itoh, Shinichi

AU - Endoh, Yasuo

AU - Yokoo, Tetsuya

AU - Kawana, Daichi

AU - Kaneko, Yoshio

AU - Tokura, Yoshinori

AU - Fujita, Masaki

PY - 2013/4

Y1 - 2013/4

N2 - The neutron Brillouin scattering (NBS) method, which was developed using advanced neutron sources, was extended to an intense pulsed spallation neutron source. The feasibility of this method was demonstrated by observing ferromagnetic spin waves in La0.8Sr0.2MnO3 and SrRuO3 powders. Gapless spin-wave excitations were observed in La0.8Sr0.2MnO3, which were continuously extrapolated to the lower scattering vector Q from previous results using single crystals. The novel result is a well-defined quadratic Q dependence in the spin-wave dispersion curve with a large energy gap in SrRuO3.

AB - The neutron Brillouin scattering (NBS) method, which was developed using advanced neutron sources, was extended to an intense pulsed spallation neutron source. The feasibility of this method was demonstrated by observing ferromagnetic spin waves in La0.8Sr0.2MnO3 and SrRuO3 powders. Gapless spin-wave excitations were observed in La0.8Sr0.2MnO3, which were continuously extrapolated to the lower scattering vector Q from previous results using single crystals. The novel result is a well-defined quadratic Q dependence in the spin-wave dispersion curve with a large energy gap in SrRuO3.

KW - Ferromagnet

KW - Inelastic neutron scattering

KW - Neutron Brillouin scattering

KW - Pulsed neutron

KW - Spin waves

UR - http://www.scopus.com/inward/record.url?scp=84876000944&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84876000944&partnerID=8YFLogxK

U2 - 10.7566/JPSJ.82.043001

DO - 10.7566/JPSJ.82.043001

M3 - Article

AN - SCOPUS:84876000944

SN - 0031-9015

VL - 82

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 4

M1 - 043001

ER -

Neutron brillouin scattering with pulsed spallation neutron source - Spin-wave excitations from ferromagnetic powder samples - Spin-wave e

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this