Magnetic nanoparticles in a nematic channel

a one-dimensional study

Konark Bisht, Varsha Banerjee, Paul Milewski, Apala Majumdar

Research output: Contribution to journalArticle

Abstract

We study a dilute suspension of magnetic nanoparticles in a nematic-filled channel and how the spatial magnetization M, can be tailored by the nematic anisotropy. We study the spatial configurations as stable critical points of a generalized phenomenological energy for a dilute ferronematic in the absence of external magnetic fields. We show how spatial inhomogeneities in the equilibrium nematic profile, induced by confinement and boundary effects, generate non-zero spatially inhomogeneous magnetization profiles in the system. Depending on the magneto-nematic coupling energy, M can either follow the nematic profile for large coupling or exhibit distinct polydomain structures separated by defect lines for weak coupling and low temperatures. Some exact solutions for prototypical situations are also obtained.
Original languageEnglish
Article number012703
Number of pages9
JournalPhysical Review E
Volume100
Issue number1
DOIs
Publication statusPublished - 10 Jul 2019

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Magnetic Nanoparticles
nanoparticles
profiles
magnetization
Magnetization
critical point
inhomogeneity
Boundary Effect
Weak Coupling
anisotropy
Energy
Inhomogeneity
energy
defects
External Field
Anisotropy
configurations
Critical point
magnetic fields
Defects

Keywords

  • nematic liquid crystals
  • magnetic fields
  • NLC matrix

Cite this

Bisht, Konark ; Banerjee, Varsha ; Milewski, Paul ; Majumdar, Apala. / Magnetic nanoparticles in a nematic channel : a one-dimensional study. In: Physical Review E. 2019 ; Vol. 100, No. 1.
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Magnetic nanoparticles in a nematic channel : a one-dimensional study. / Bisht, Konark; Banerjee, Varsha; Milewski, Paul; Majumdar, Apala.

In: Physical Review E, Vol. 100, No. 1, 012703, 10.07.2019.

Research output: Contribution to journalArticle

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