Spin-wave dynamics in Mn-doped FeGe helimagnet

Standard

Spin-wave dynamics in Mn-doped FeGe helimagnet : Small-angle neutron scattering study. / Grigoriev, S. V.; Altynbaev, E. V.; Siegfried, S. A.; Pshenichnyi, K. A.; Honnecker, D.; Heinemann, A.; Tsvyashchenko, A. V.

In: Journal of Magnetism and Magnetic Materials, Vol. 459, 01.08.2018, p. 159-164.

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

Harvard

Grigoriev, SV , Altynbaev, EV, Siegfried, SA, Pshenichnyi, KA, Honnecker, D, Heinemann, A & Tsvyashchenko, AV 2018, 'Spin-wave dynamics in Mn-doped FeGe helimagnet: Small-angle neutron scattering study', Journal of Magnetism and Magnetic Materials, vol. 459, pp. 159-164. https://doi.org/10.1016/j.jmmm.2017.11.050

APA

Grigoriev, S. V., Altynbaev, E. V., Siegfried, S. A., Pshenichnyi, K. A., Honnecker, D., Heinemann, A., & Tsvyashchenko, A. V. (2018). Spin-wave dynamics in Mn-doped FeGe helimagnet: Small-angle neutron scattering study. Journal of Magnetism and Magnetic Materials, 459, 159-164. https://doi.org/10.1016/j.jmmm.2017.11.050

Vancouver

Grigoriev SV , Altynbaev EV, Siegfried SA, Pshenichnyi KA, Honnecker D, Heinemann A et al. Spin-wave dynamics in Mn-doped FeGe helimagnet: Small-angle neutron scattering study. Journal of Magnetism and Magnetic Materials. 2018 Aug 1;459:159-164. https://doi.org/10.1016/j.jmmm.2017.11.050

Author

Grigoriev, S. V. ; Altynbaev, E. V. ; Siegfried, S. A. ; Pshenichnyi, K. A. ; Honnecker, D. ; Heinemann, A. ; Tsvyashchenko, A. V. / Spin-wave dynamics in Mn-doped FeGe helimagnet : Small-angle neutron scattering study. In: Journal of Magnetism and Magnetic Materials. 2018 ; Vol. 459. pp. 159-164.

BibTeX

@article{65f34ad1e8254404a4590f2966850cad,

title = "Spin-wave dynamics in Mn-doped FeGe helimagnet: Small-angle neutron scattering study",

abstract = "We report on the measurements of the spin-wave stiffness A and its temperature dependence close to TC for two compounds: FeGe and the solid solution Fe0.8Mn0.2Ge. The small-angle neutron scattering was used to detect the inelastic scattering in the magnetic field above the transition from the conical to the field-polarized state. This inelastic contribution is shaped as two circles on a neutron scattering map. Their radius is directly related to the spin wave stiffness A that decreases with a temperature but has a finite value at Tc for both compounds. Since the softening of spin waves near Tc, which is expected for a second-order phase transition, is not observed, we make a conclusion about the transition as having a first-order nature.",

keywords = "spin-wave dynamics, helimagnets, polarized neutron scattering",

author = "Grigoriev, {S. V.} and Altynbaev, {E. V.} and Siegfried, {S. A.} and Pshenichnyi, {K. A.} and D. Honnecker and A. Heinemann and Tsvyashchenko, {A. V.}",

year = "2018",

month = aug,

day = "1",

doi = "10.1016/j.jmmm.2017.11.050",

language = "English",

volume = "459",

pages = "159--164",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Spin-wave dynamics in Mn-doped FeGe helimagnet

T2 - Small-angle neutron scattering study

AU - Grigoriev, S. V.

AU - Altynbaev, E. V.

AU - Siegfried, S. A.

AU - Pshenichnyi, K. A.

AU - Honnecker, D.

AU - Heinemann, A.

AU - Tsvyashchenko, A. V.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - We report on the measurements of the spin-wave stiffness A and its temperature dependence close to TC for two compounds: FeGe and the solid solution Fe0.8Mn0.2Ge. The small-angle neutron scattering was used to detect the inelastic scattering in the magnetic field above the transition from the conical to the field-polarized state. This inelastic contribution is shaped as two circles on a neutron scattering map. Their radius is directly related to the spin wave stiffness A that decreases with a temperature but has a finite value at Tc for both compounds. Since the softening of spin waves near Tc, which is expected for a second-order phase transition, is not observed, we make a conclusion about the transition as having a first-order nature.

AB - We report on the measurements of the spin-wave stiffness A and its temperature dependence close to TC for two compounds: FeGe and the solid solution Fe0.8Mn0.2Ge. The small-angle neutron scattering was used to detect the inelastic scattering in the magnetic field above the transition from the conical to the field-polarized state. This inelastic contribution is shaped as two circles on a neutron scattering map. Their radius is directly related to the spin wave stiffness A that decreases with a temperature but has a finite value at Tc for both compounds. Since the softening of spin waves near Tc, which is expected for a second-order phase transition, is not observed, we make a conclusion about the transition as having a first-order nature.

KW - spin-wave dynamics

KW - helimagnets

KW - polarized neutron scattering

UR - http://www.scopus.com/inward/record.url?scp=85034763242&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2017.11.050

DO - 10.1016/j.jmmm.2017.11.050

M3 - Article

AN - SCOPUS:85034763242

VL - 459

SP - 159

EP - 164

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

ER -

ID: 76658509