Biasing a ferronematic – a new way to detect weak magnetic field. Issue 26 (14th June 2016)

• Record Type: Journal Article
• Authors: Tomašovičová, Natália; Kováč, Jozef; Raikher, Yuriy; Éber, Nándor; Tóth-Katona, Tibor; Gdovinová, Veronika; Jadżyn, Jan; Pinčák, Richard; Kopčanský, Peter
• Is Part Of: Soft matter. Volume 12:Issue 26(2016)
• Page Start: 5780
• Page End: 5786
• Publication Date: 2016-06-14
• Subjects: Soft condensed matter -- Periodicals; 530.413
• DOI: 10.1039/c6sm00354k
• Languages: English
• ISSNs: 1744-683X

Abstract

Abstract : The magnetic properties of a ferronematic are studied. A dc magnetic field applied in the isotropic phase causes an irreversible change of the ac magnetic susceptibility at the phase transition. Abstract : The magnetic properties of a ferronematic, i.e., a nematic liquid crystal doped with magnetic nanoparticles in low volume concentration are studied, with the focus on the ac magnetic susceptibility. A weak dc bias magnetic field (a few Oe) applied to the ferronematic in its isotropic phase increases the ac magnetic susceptibility considerably. Passage of the isotropic-to-nematic phase transition resets this enhancement irreversibly (unless the dc bias field is applied again in the isotropic phase).