@article { ISI:000261361900032,
	title = {Low temperature synthesis of nanocrystalline lithium ferrite by a modified citrate gel precursor method},
	journal = {Materials Research Bulletin},
	volume = {43},
	number = {12},
	year = {2008},
	month = {DEC},
	pages = {3447-3456},
	publisher = {PERGAMON-ELSEVIER SCIENCE LTD},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND},
	abstract = {<p>Single phase nanocrystalline lithium ferrite is synthesized by a modified citrate gel precursor technique. Ferrite nanoparticles of average size of 8 nm, obtained after calcination of the citrate gel Made by the usual method at 450 degrees C, show superparamagnetic behavior. However, small amounts of alpha-Fe(2)O(3) is formed as an impurity phase clue to the initial formation of some gamma-Fe(2)O(3) phase. Oil the other hand, when the pH of the mixed Solution is increased to 7 after the addition of ammonia Solution, a lower calcination temperature of 200 degrees C is sufficient for the formation of single phase lithium ferrite nanoparticles of size 30 nm. No impurity phases are detected when the nanocrystalline powders arc calcined at higher temperatures. The magnetic properties of the ferrite nanoparticles of different sizes obtained by calcining the powders at different temperatures are studied. (C) 2008 Elsevier Ltd. All rights reserved.</p>},
	keywords = {Chemical synthesis, Magnetic materials, magnetic properties, Nanostructures, Oxides},
	issn = {0025-5408},
	doi = {10.1016/j.materresbull.2008.01.023},
	author = {Verma, Seema 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}
}
