High frequency susceptibility of a weak ferromagnet with magnetostrictive magnetoelectric coupling: using heterostructures to tailor electromagnon frequencies - Condensed Matter > Materials ScienceReport as inadecuate




High frequency susceptibility of a weak ferromagnet with magnetostrictive magnetoelectric coupling: using heterostructures to tailor electromagnon frequencies - Condensed Matter > Materials Science - Download this document for free, or read online. Document in PDF available to download.

Abstract: In the first part of this work we calculate the high frequencymagnetoelectric susceptibility of a simultaneously ferroelectric and cantedantiferromagnetic also know as weak ferromagnetic thin film withmagnetostrictive magnetoelectric coupling. We show that a dynamic couplingexists between the ferroelectric and optic antiferromagnetic excitations. Inthe second part of the paper, we calculate using an effective medium method thesusceptibility of a heterostructure comprising alternating thin films of such amaterial together with a ferromagnet. Dipolar magnetic fields serve to couplethe ferromagnetic and optic antiferromagnetic modes, which in turn couples theferromagnetic and ferroelectric excitations. This provides a mechanism forcreating -electromagnon- modes in the microwave regime which may be useful forapplications.



Author: K. L. Livesey, R. L. Stamps

Source: https://arxiv.org/



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