@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}
}
@article { ISI:000271542900148,
	title = {On the structural, magnetic and electrical properties of sol-gel derived nanosized cobalt ferrite},
	journal = {Journal of Alloys and Compounds},
	volume = {485},
	number = {1-2},
	year = {2009},
	month = {OCT},
	pages = {711-717},
	publisher = {ELSEVIER SCIENCE SA},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Nanoparticles of cobalt ferrite were synthesized by sol gel method. These particles were structurally characterized by using X-Ray Diffraction and Transmission Electron Microscopy, High Resolution Transmission Electron Microscopy, Energy Dispersive Spectrum and Inductively Coupled Plasma Analysis and the results confirmed the formation of spherically shaped nanoparticles of cobalt ferrite having a size lying in the range of 13-14 nm. The as prepared sample was sintered at 800 degrees C and the structural, magnetic and dielectric properties were measured. The dielectric properties were studied and analyzed as a function of temperature and frequency. The ac and dc conductivity studies were carried out to delve into the conduction mechanism. The existing models based on quantum mechanical tunneling were effectively employed to explain the frequency dependent conductivity. (C) 2009 Elsevier B.V. All rights reserved.</p>},
	keywords = {Electronic Transport, Magnetic measurements, Magnetically ordered materials, Nanostructures, Scanning and transmission electron microscopy, Sol-gel synthesis, X-ray diffraction},
	issn = {0925-8388},
	doi = {10.1016/j.jallcom.2009.06.033},
	author = {Gopalan, E. Veena and Joy, Pattayil Alias and Al-Omari, I. A. and Kumar, D. Sakthi and Yoshida, Yasuhiko and Anantharaman, Maliemadom R.}
}
