Fig. 3 | Nature Communications

Fig. 3

From: Biologically encoded magnonics

Fig. 3

Micromagnetic dissection of a magnetosome chain. Simulated FMR spectra for different segments of the magnetosome chain shown in inset of Fig. 2a. a Long segment with eight particles in a roughly linear configuration. b Short segment with the four particles which are slightly offset from the main segment. c The superposition of the spectra (a) and (b). d Complete chain. The difference between the spectra (c) and (d) is due to magnetostatic interactions between the two chain segments present in the twelve-particle model (d). e Left, enlarged SEM micrograph of the particle chain from the inset in Fig. 2a. Right, geometric model of the particle chain, showing the <100> crystallographic axis system (arrows) at the center positions of each particle (as determined from the SEM micrograph). The crystallographic axis system of each particle is assumed to be oriented such that one of its four <111> magnetic easy axes, shown as black rod, is aligned towards the nearest neighbor particle. The spatial orientation of the other three <111> axes of the particle varies randomly from one particle to the next. In magnetite, at temperatures above the isotropic point of 135 K, the <100> axes represent magnetic hard axes and the <111> axes represent magnetic easy axes

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