Issue 5, 2020

Magnetic properties of synthetic fluorophlogopite mica crystals

Abstract

Micas have recently attracted the interest of materials scientists to be used as flexible substrates for the growth of nanomaterials. Synthetic fluorophlogopite is particularly appealing due to its high thermal stability and a significantly lower level of impurities compared to natural mica. Perhaps because of such high purity, little attention has been given to its magnetic properties, assumed to be diamagnetic. Herein, we report an in-depth study of the magnetic properties of commercial fluorophlogopite mica crystals as a function of magnetic field and temperature. Our study shows that the magnetic response of mica comprises diamagnetic and paramagnetic components. The latter is quite significant at low temperatures and can be analyzed within the framework of Curie's law and the Langevin theory, which indicate that it originates from isolated magnetic cations. Hence, special care must be taken to study the magnetic properties of mica-supported nanostructures. We propose a protocol to correct the magnetic contributions of mica substrates which can be useful in future developments of flexible magnetic devices.

Graphical abstract: Magnetic properties of synthetic fluorophlogopite mica crystals

Article information

Article type
Paper
Submitted
16 May 2020
Accepted
27 Jul 2020
First published
27 Jul 2020
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2020,1, 1464-1471

Magnetic properties of synthetic fluorophlogopite mica crystals

Z. Ma, V. Skumryev and M. Gich, Mater. Adv., 2020, 1, 1464 DOI: 10.1039/D0MA00317D

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