Related Experiment Video
Updated: May 18, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Mixed modes of surface polaritons in a PML-type magnetoelectric multiferroic with canted spins
Vincensius Gunawan1, Robert L Stamps
1Jurusan Fisika, FMIPA, Universitas Diponegoro, Jl. Prof Soedarto, Tembalang, Semarang, Indonesia. goenangie@gmail.com
Abstract:
We present a theoretical discussion of surface polaritons on a ferroelectric-antiferromagnet with magnetoelectric coupling which allows the magnetic subsystem to be canted. Canting of the antiferromagnet results in weak ferromagnetism. The surface polaritons for a semi-infinite film are calculated for a propagation parallel to the uniaxial easy axis, leading to mixed modes. A superposition of two plane waves is needed to generate mixed surface modes. We find two branches, one near the magnon resonance frequency and the other near the phonon resonance frequency. We also find that the surface modes are non-reciprocal due to magnetoelectric interaction, such that ω(k) ≠ ω(-k), where ω is the frequency and k is the propagation vector.
Related Concept Videos
Potential Due to a Magnetized Object
The vector...
Potential Due to a Polarized Object
Paramagnetism
Ferromagnetism
Diamagnetism
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...

