@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:000293826800006,
	title = {Structural, magnetic and mossbauer spectral studies of nanocrystalline Ni0.5Zn0.5Fe2O4 ferrite powders},
	journal = {Journal of Alloys and Compounds},
	volume = {509},
	number = {37},
	year = {2011},
	month = {SEP},
	pages = {8999-9004},
	publisher = {ELSEVIER SCIENCE SA},
	address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND},
	abstract = {<p>Nanocrystalline Ni0.5Zn0.5Fe2O4 powders, synthesized by a combustion method are investigated by X-ray diffraction, vibrating sample magnetometry and Mossbauer spectroscopic techniques. We adopt a strategy to systematically control the particle sizes between 4 and 45 nm simply by changing the elemental stoichiometric coefficient, Phi(e), of the combustion mixture. Curie temperature of the superparamagnetic particles of size 4 nm is higher than that of the bulk particles. Interestingly, bigger particles (45 nm) show a comparable room temperature saturation magnetization and exceptionally very high Curie temperature of 833 K, when compared to that of the bulk Ni0.5Zn0.5Fe2O4 material (563 K). (C) 2011 Elsevier B. V. All rights reserved.</p>},
	keywords = {Chemical synthesis, Magnetisation, Mossbauer spectroscopy, Nanostructured materials},
	issn = {0925-8388},
	doi = {10.1016/j.jallcom.2011.06.047},
	author = {Verma, Seema and Joy, Pattayil Alias and Kurian, Sajith}
}
