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Tailoring ferromagnetic resonance in bicomponent artificial spin ices

Conference · · 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)
 [1];  [2];  [1]
  1. Univ. of Delaware, Newark, DE (United States)
  2. Univ. of Delaware, Newark, DE (United States); Louisiana State Univ., Baton Rouge, LA (United States)

Magnonic crystals are artificial media in which magnetic properties such as saturation magnetization or relative permeability are periodically modulated in space, allowing for effective control of the magnonic bandstructure by geometrical structuring. From this end, artificial spin ice - arrays of interacting nanomagnets - can be viewed as reprogrammable twodimensional magnonic crystal. Here, we introduce a new kind of bicomponent artificial spin ice that is made of two dissimilar ferromagnetic metals arranged on complementary lattice sites. It is shown that the resonant dynamics can effectively be controlled based on the distinct magnetic properties of the two materials. We use broadband ferromagnetic resonance to measure the spin-wave eigenmodes of the different sublattices. Here, we compare the ferromagnetic resonance spectra of the single component arrays with the spectrum of a bicomponent system that can be interpreted using a superposition principle. Furthermore, we show that the switching behavior of the sublattices affects one another.

Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
DOE Contract Number:
SC0020308
OSTI ID:
1866995
Journal Information:
2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS), Conference: 2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS), Tel Aviv (Israel), 1-3 Nov 2021
Country of Publication:
United States
Language:
English

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