@article { ISI:000229664600004,
	title = {Electronic structure and ferromagnetism of polycrystalline Zn1-xCoxO (0 <= x <= 0.15)},
	journal = {Solid State Communications},
	volume = {134},
	number = {10},
	year = {2005},
	month = {JUN},
	pages = {665-669},
	publisher = {PERGAMON-ELSEVIER SCIENCE LTD},
	type = {Article},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND},
	abstract = {<p>The electronic structure of polycrystalline ferromagnetic Zn1-x,CoxO (0.05 \&lt;= x \&lt;= 0.15) and the oxidation state of Co in it, have been investigated. The Co-doped polycrystalline samples are synthesized by a combustion method and are ferromagnetic at room temperature. XPS and optical absorption studies show evidence for Co2+ ions in the tetrahedral symmetry, indicating, substitution of Co2+ in the ZnO lattice. However, powder XRD and electron diffraction data shock the presence of Co metal in the samples. This give evidence to the fact that some Co2+ ion are incorporated in the ZnO lattice which gives changes in the electronic structure whereas ferromagnetism comes from the Co metal impurities present in the samples. (c) 2005 Elsevier Ltd. All rights reserved.</p>},
	keywords = {Magnetically ordered materials, Optical properties, Semiconductors},
	issn = {0038-1098},
	doi = {10.1016/j.ssc.2005.03.013},
	author = {Deka, Sasanka and Joy, Pattayil Alias}
}
@article { ISI:000262987800024,
	title = {Solid state synthesis and room temperature magnetic properties of iron phosphide nanoparticles},
	journal = {Journal of Nanoparticle Research},
	volume = {11},
	number = {2},
	year = {2009},
	month = {FEB},
	pages = {491-497},
	publisher = {SPRINGER},
	address = {VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS},
	abstract = {<p>Room temperature magnetic properties have been achieved for nano-crystalline iron phosphide synthesized from the direct solid state reaction of iron chloride and tri-octylphosphine (TOP). The magnetization continuously increased with higher magnetic fields, indicating a super-paramagnetic behavior. It is observed that room temperature magnetism is possible for the material showing antiferromagnetic nature at low temperatures. In the present synthesis, TOP acted as a source of phosphorus as well as a surfactant. X-ray diffraction (XRD) studies revealed that the black powder is a mixture of FeP and Fe(2)P. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) showed elongated as well spherical particles. Energy dispersion X-ray analysis (EDAX) confirmed a non-stoichiometric iron phosphide. Presence of TOP was confirmed by infra-red (IR) spectroscopy, and thermo-gravimetric analysis (TGA) indicated about 6\% wt. loss due to presence of organics.</p>},
	keywords = {Iron phosphide, Semiconductors, Solid state reaction, synthesis, XRD},
	issn = {1388-0764},
	doi = {10.1007/s11051-008-9458-0},
	author = {Singh, N. and Khanna, P. K. and Joy, Pattayil Alias}
}
