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Approximation of magnetic behavior of complex nanomagnetic materials, using the “ P ” curves for structural characterization of magnetic suspensions
Author(s) -
Popa N. C.,
Siblini A.,
Rousseau J. J.,
BlancMig M.F.,
Chatelon J. P.
Publication year - 2008
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200723623
Subject(s) - magnetization , hysteresis , ferromagnetism , magnetic nanoparticles , materials science , magnetic hysteresis , ferrofluid , condensed matter physics , magnetic field , saturation (graph theory) , coercivity , characterization (materials science) , magnetic domain , nanoparticle , nanotechnology , physics , mathematics , quantum mechanics , combinatorics
The “ P ” curves for the structural characterization of magnetic nanoparticles suspensions (complex fluids, complex powders, complex composite materials, or living biological materials having magnetic properties) are the graphical representation of the first derivative (relative to the magnetic field strength H ) of the magnetization curve relative to its saturation magnetization. In the case of the above materials, the magnetic properties are conferred to various carrier liquids by artificially integrating in their structure ferromagnetic particles of different sizes. The magnetic properties are usually shown by the hysteresis curve. The structure can be seen by (electronic) micrography. The P curves offer another possibility to determine the structure of the magnetic component of a complex fluid by numerical analysis of the magnetization curve experimentally obtained. Starting from these P curves, the paper presents the possibility to approximate the magnetic behavior of these complex nanomagnetic materials. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)