@article { ISI:000254416300010,
	title = {Enhanced shape anisotropy and magneto-optical birefringence by high energy ball milling in NixFe1-xFe2O4 ferrofluids},
	journal = {Journal of Magnetism and Magnetic Materials},
	volume = {320},
	number = {6},
	year = {2008},
	month = {MAR},
	pages = {815-820},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Ferrofluids belonging to the series NixFe1-xFe2O4 were synthesised by two different procedures-one by standard co-precipitation techniques, the other by co-precipitation for synthesis of particles and dispersion aided by high-energy ball milling with a view to understand the effect of strain and size anisotropy on the magneto-optical properties of ferrofluids. The birefringence measurements were carried out using a standard ellipsometer. The birefringence signal obtained for chemically synthesised samples was satisfactorily fitted to the standard second Langevin function. The ball-milled ferrofluids showed a deviation and their birefringence was enhanced by an order. This large enhancement in the birefringence value cannot be attributed to the increase in grain size of the samples, considering that the grain sizes of sample synthesised by both modes are comparable; instead, it can be attributed to the lattice strain-induced shape anisotropy(oblation) arising from the high-energy ball-milling process. Thus magnetic-optical (MO) signals can be tuned by ball-milling process, which can find potential applications. (C) 2007 Elsevier B.V. All rights reserved.</p>},
	keywords = {birefringence, Co-precipitation, ferrofluid, HEBM},
	issn = {0304-8853},
	doi = {10.1016/j.jmmm.2007.08.032},
	author = {Nair, Swapna S. and Xavier, Francis and Joy, Pattayil Alias and Kulkarni, S. D. and Anantharaman, Maliemadom R.}
}
@article {46002,
	title = {Stealth emulsion based on natural rubber latex, core-shell ferrofluid/carbon black in the S and X bands},
	journal = {Nanotechnology},
	volume = {30},
	year = {2019},
	month = {AUG },
	pages = {315703},
	type = {Article},
	abstract = {<p>A lossy dielectric with an appropriate magnetic property is one of the requirements of a stealth material. The thickness of the absorber and the corresponding bandwidth of absorption are also other deciding factors that determine the choice of the material as microwave absorbers. A stable emulsion, which is lossy as well as magnetic, is promising, since it can be coated on surfaces with required thickness in the desired band. A magnetic nanofluidic emulsion serves the purpose. A microwave absorbing emulsion based on natural rubber latex with core-shell magnetic nanoparticles, based on superparamagnetic iron oxide nanoparticles (SPIONs), was developed. The effect of additives like carbon black on the bandwidth of absorption was also studied as a function of weight percentage of carbon black. The complex dielectric permittivity and magnetic permeability were evaluated using a vector network analyser in the S and X bands. Furthermore, these results were modelled using surface impedance equations. These investigations revealed that the incorporation of carbon black enhances the bandwidth of absorption and an emulsion with the required dielectric permittivity and magnetic permeability can be tailored for stealth applications.</p>},
	keywords = {carbon black, core-shell nanoparticles, ferrofluid, microwave absorbing paint, natural rubber latex},
	issn = {0957-4484},
	doi = {10.1088/1361-6528/ab1194},
	author = {Vinayasree, S. and Nair, Ajalesh Balachandran and Mani, Manoj and Archana, V. N. and Joseph, Rani and Mohanan, P. and Joy, P. A. and Anantharaman, M. R.}
}
