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Updated: Aug 8, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
Magnetodielectric effects from spin fluctuations in isostructural ferromagnetic and antiferromagnetic systems
G Lawes1, A P Ramirez, C M Varma
1Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Abstract:
We report on the effects of spin fluctuations, magnetic ordering, and external magnetic field on the dielectric constant of the ferromagnet SeCuO3, and the antiferromagnet TeCuO3. A model based on the coupling between uniform polarization and the q-dependent spin-spin correlation function is presented to explain the different behaviors for these isostructural compounds. The large magnetocapacitance near the transition temperature in the ferromagnet SeCuO3 suggests routes to enhancing the magnetodielectric response for practical applications.
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