@article { ISI:000242519200007,
	title = {Optically transparent magnetic nanocomposites based on encapsulated Fe3O4 nanoparticles in a sol-gel silica network},
	journal = {Nanotechnology},
	volume = {17},
	number = {22},
	year = {2006},
	month = {NOV},
	pages = {5565-5572},
	publisher = {IOP PUBLISHING LTD},
	type = {Article},
	address = {DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND},
	abstract = {<p>Composite Fe3O4-SiO2 materials were prepared by the sol-gel method with tetraethoxysilane and aqueous-based Fe3O4 ferrofluids as precursors. The monoliths obtained were crack free and showed both optical and magnetic properties. The structural properties were determined by infrared spectroscopy, x-ray diffractometry and transmission electron microscopy. Fe3O4 particles of 20 nm size lie within the pores of the matrix without any strong Si-O-Fe bonding. The well established silica network provides effective confinement to these nanoparticles. The composites were transparent in the 600-800 nm regime and the field dependent magnetization curves suggest that the composite exhibits superparamagnetic characteristics.</p>},
	issn = {0957-4484},
	doi = {10.1088/0957-4484/17/22/007},
	author = {Thomas, Senoy and Sakthikumar, D. and Joy, Pattayil Alias and Yoshida, Yasuhiko and Anantharaman, Maliemadom R.}
}
@article { ISI:000265933700042,
	title = {Origin of high room temperature ferromagnetic moment of nanocrystalline multiferroic BiFeO3},
	journal = {Applied Physics Letters},
	volume = {94},
	number = {18},
	year = {2009},
	month = {MAY},
	pages = {182507},
	publisher = {AMER INST PHYSICS},
	address = {CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA},
	abstract = {<p>Single phase nanocrystalline BiFeO3 of average crystallite size similar to 25 nm with very high magnetization at room temperature is synthesized by an autocombustion method. Magnetic measurements above room temperature show deviation between field cooled and zero field cooled magnetization below 645 K, the Neel temperature (T-N) of the bulk material, indicating intrinsic nature of ferromagnetism. However, observation of a broad magnetic transition above T-N of BiFeO3 and extended up to 800 K suggests the presence of Fe3O4 as a possible magnetic impurity phase. Evidence for the presence of Fe3O4 is obtained from detailed analysis of the powder x-ray diffraction pattern.</p>},
	keywords = {bismuth compounds, Combustion synthesis, crystallites, ferromagnetic materials, high-temperature effects, magnetic impurities, Magnetic moments, Magnetisation, Multiferroics, Nanostructured materials, Neel temperature, X-ray diffraction},
	issn = {0003-6951},
	doi = {10.1063/1.3132586},
	author = {Vijayanand, S. and Potdar, H. S. and Joy, Pattayil Alias}
}
