Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111192
Title: Ferrofluids with Shifted Dipoles: Ground State Structures
Authors: Kantorovich, S.
Weeber, R.
Cerda, J. J.
Holm, C.
Issue Date: 2011
Publisher: Royal Society of Chemistry (RSC)
Citation: Ferrofluids with Shifted Dipoles: Ground State Structures / S. Kantorovich, R. Weeber, J. J. Cerda et al. // Soft Matter. — 2011. — Vol. 7. — Iss. 11. — P. 5217-5227.
Abstract: In the past decades, ferrofluids have become relevant in many applications ranging from engineering to medicine, and have attracted the interest of scientists from many fields. To understand the physical mechanisms serving as a basis for these applications, over the last decades, many of the properties of ferrofluids have been studied and can now be controlled. However, in order to fine-tune various aspects of the interactions in the system and hopefully - in the long run - to build tailored structures, in recent years, magnetic nanoparticles and colloids that deviate from the model of a spherical particle with a dipole moment at its center were examined. Among them are dumbbells, magnetic core-shell particles, elongated ferro-particles, and colloidal particles with a magnetic cap. In this paper, we introduce and examine - using analytical calculations and Monte Carlo simulations - one such model system, namely, magnetic particles in which the dipole moment is shifted from the center of mass towards the particle's surface. In this way, an additional anisotropy is introduced to the particles, which results in quite different and surprising microscopic properties of suspensions. Here, we mainly concentrate on ground states of small clusters of shifted-dipole particles, but also take a first glance on suspensions at finite temperature. © 2011 The Royal Society of Chemistry.
Keywords: ANALYTICAL CALCULATION
CENTER OF MASS
COLLOIDAL PARTICLE
CORE-SHELL PARTICLE
FERRO FLUID
FINITE TEMPERATURES
GROUND-STATE STRUCTURES
MAGNETIC NANOPARTICLES
MAGNETIC PARTICLE
MICROSCOPIC PROPERTIES
MODEL SYSTEM
MONTE CARLO SIMULATION
PHYSICAL MECHANISM
SMALL CLUSTERS
SPHERICAL PARTICLE
COLLOIDS
COMPUTER SIMULATION
ELECTRIC DIPOLE MOMENTS
GROUND STATE
MAGNETIC CIRCUITS
MAGNETIC FLUIDS
MONTE CARLO METHODS
NANOMAGNETICS
NANOPARTICLES
SUSPENSIONS (FLUIDS)
MAGNETIC BUBBLES
URI: http://hdl.handle.net/10995/111192
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 79957479844
ISSN: 1744-683X
metadata.dc.description.sponsorship: The research was carried out with the financial support of RFBR Grant No. 08-02-00647, DFG Grant No. HO 1108/12-1, President RF Grant MK-6514.2010.2. One of the authors (S.K.) is grateful to Dr M. Sega for recommendations concerning the structure of the theoretical part of the manuscript.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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