Volume 128, Number 6, December 2019
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||31 January 2020|
Slaved coarsening in ferronematics
1 Department of Physics, Indian Institute of Technology Delhi - New Delhi 110016, India
2 School of Physical Sciences, Jawaharlal Nehru University - New Delhi 110067, India
Received: 25 October 2019
Accepted: 2 January 2020
We focus on understanding the influence of the two-component coupling in ferronematics, a colloidal suspension of magnetic nanoparticles in nematic liquid crystals. Using coarse-grained Landau-de Gennes free energies, we study the ordering dynamics of this complex fluid in d = 2 and present a range of analytical and numerical results. Our main observations are: i) slaved coarsening for quench temperatures T intermediate to the critical temperatures of the uncoupled components, ii) slower growth similar to the Lifshitz-Slyozov law for symmetric magneto-nematic coupling, iii) sub-domain morphologies dominated by interfacial defects for asymmetric coupling strengths. These novel results will serve to guide future experiments on this technologically important system.
PACS: 64.75.Gh – Phase separation and segregation in model systems (hard spheres, Lennard-Jones, etc.) / 77.80.Dj – Domain structure; hysteresis / 68.35.Rh – Phase transitions and critical phenomena
© EPLA, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.