@article { ISI:000269638800052,
	title = {Magnetic characteristics of nanocrystalline multiferroic BiFeO3 at low temperatures},
	journal = {Physical Review B},
	volume = {80},
	number = {6},
	year = {2009},
	month = {AUG},
	pages = {064423},
	publisher = {AMER PHYSICAL SOC},
	address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
	abstract = {<p>The magnetic characteristics of nanocrystalline BiFeO3 with average crystallite sizes of similar to 50 and similar to 100 nm are evaluated by studying the temperature and field dependence of magnetization at low temperatures. Different properties such as magnetization, coercivity, and remanence show evidence for changes in the magnetic properties associated with the phase transitions at low temperatures, reported from Raman studies. Detailed field-cooled and zero-field-cooled magnetization measurements show that the likely origin of the changes in the magnetic characteristics is from the changes in the domain structure.</p>},
	keywords = {bismuth compounds, coercive force, crystallites, magnetic domains, magnetic transitions, Multiferroics, Nanostructured materials, Raman spectra, remanence},
	issn = {1098-0121},
	doi = {10.1103/PhysRevB.80.064423},
	author = {Vijayanand, S. and Mahajan, Mangesh B. and Potdar, H. S. and Joy, Pattayil Alias}
}
@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}
}
