Linear magnetoelectric effect in göthite, α-FeOOH

By means of symmetry analysis, density functional theory calculations, and Monte Carlo simulations we show that goethite, α-FeOOH, is a linear magnetoelectric below its Néel temperature T (N) = 400 K. The experimentally observed magnetic field induced spin-flop phase transition results in either cha...

Descripción completa

Detalles Bibliográficos
Autores principales: Ter-Oganessian, N. V., Guda, A. A., Sakhnenko, V. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5703871/
https://www.ncbi.nlm.nih.gov/pubmed/29180762
http://dx.doi.org/10.1038/s41598-017-16772-w
Descripción
Sumario:By means of symmetry analysis, density functional theory calculations, and Monte Carlo simulations we show that goethite, α-FeOOH, is a linear magnetoelectric below its Néel temperature T (N) = 400 K. The experimentally observed magnetic field induced spin-flop phase transition results in either change of direction of electric polarization or its suppression. Estimated value of magnetoelectric coefficient is 0.57 μC · m(−2) · T(−1). The abundance of goethite in nature makes it arguably the most widespread magnetoelectric material.

Ejemplares similares