TY - JOUR
T1 - An Experiment-Based Numerical Treatment of Spin Wave Modes in Periodically Porous Materials
AU - Van Opdenbosch, Daniel
AU - Hukic-Markosian, Golda
AU - Ott, Steven
AU - Abert, Claas
AU - Bartl, Michael H.
N1 - Publisher Copyright:
© 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/3/1
Y1 - 2020/3/1
N2 - To determine a general correlation between structure and dynamic magnetic properties of porous materials, the frequencies of magnetic spin waves are studied by Brillouin light scattering from nickel inverse opals and backed up by micromagnetic simulations. Within the observed unit cell size regime between 400 and 800 nm, discrete thickness standing modes are found to change with unit cell size. By applying pair correlation functions of the inverse opal solid phase normal to the applied field to an equation for perpendicular standing modes, the directional and unit cell size-dependent spectral intensities above the surface mode region can be traced. Thus, an accessible general approach for the prediction of standing spin waves in porous materials is obtained.
AB - To determine a general correlation between structure and dynamic magnetic properties of porous materials, the frequencies of magnetic spin waves are studied by Brillouin light scattering from nickel inverse opals and backed up by micromagnetic simulations. Within the observed unit cell size regime between 400 and 800 nm, discrete thickness standing modes are found to change with unit cell size. By applying pair correlation functions of the inverse opal solid phase normal to the applied field to an equation for perpendicular standing modes, the directional and unit cell size-dependent spectral intensities above the surface mode region can be traced. Thus, an accessible general approach for the prediction of standing spin waves in porous materials is obtained.
KW - Brillouin light scattering
KW - inverse opals
KW - micromagnetic simulations
KW - nickel
KW - porous materials
KW - spin waves
UR - http://www.scopus.com/inward/record.url?scp=85074751279&partnerID=8YFLogxK
U2 - 10.1002/pssb.201900296
DO - 10.1002/pssb.201900296
M3 - Article
AN - SCOPUS:85074751279
SN - 0370-1972
VL - 257
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 3
M1 - 1900296
ER -