01798nas a2200229   4500008004100000022001400041245009900055210006900154260007400223300001200297490000700309520099100316653001901307653001901326653002501345653001401370653000801384100001401392700001901406700002501425856011801450       2009                        eng d  a1388-076400aSolid state synthesis and room temperature magnetic properties of iron phosphide nanoparticles0 aSolid state synthesis and room temperature magnetic properties o  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcFEB  a491-4970 v113 a<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>10aIron phosphide10aSemiconductors10aSolid state reaction10asynthesis10aXRD1 aSingh, N.1 aKhanna, P., K.1 aJoy, Pattayil, Alias  uhttp://library.ncl.res.in/content/solid-state-synthesis-and-room-temperature-magnetic-properties-iron-phosphide-002039nas a2200241   4500008004100000022001400041245009700055210006900152260007400221300001200295490000700307520118300314653002301497653002201520653001901542653002001561100001901581700001901600700001801619700001801637700001801655856012401673       2010                        eng d  a1388-076400aOne-pot synthesis of oleic acid-capped cadmium chalcogenides (CdE: E = Se, Te) nano-crystals0 aOnepot synthesis of oleic acidcapped cadmium chalcogenides CdE E  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJAN  a101-1090 v123 a<p>Surface-capped CdSe and CdTe nano-crystals (NCs) have been synthesized using cadmium acetate, oleic acid and respective tri-octylphosphine chalcogenide (TOPE; E = Se/Te) in diphenyl ether (DPE). Well-dispersed CdSe particles showed two absorption bands at the region of 431-34 and 458-60 nm in optical absorption study. A band-edge emission resulted at 515 nm with an excitation energy of 400 nm, in its photoluminescence (PL) spectrum. Similarly, UV-visible absorption study of CdTe revealed an absorption band at &lt; 700 nm. The broadened X-ray diffraction (XRD) pattern showed that at higher reaction temperature cubic CdSe but hexagonal CdTe can be obtained with crystallite size of &lt; 10 nm. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed that agglomerated particles are of spherical nature. The inter-planar spacing in CdTe was measured to be 0.406 nm, a characteristic of (100) lattice plane in hexagonal CdTe. X-ray photoelectron spectroscopy (XPS) showed that CdSe NCs have better air stability stable than CdTe. Presence of organic moiety around the semiconductor particles was confirmed by infrared (IR) spectroscopy.</p>10aChemical synthesis10aphotoluminescence10aSemiconductors10aSurface capping1 aKhanna, P., K.1 aRao, Srinivasa1 aPatil, K., R.1 aSingh, V., N.1 aMehta, B., R.  uhttp://library.ncl.res.in/content/one-pot-synthesis-oleic-acid-capped-cadmium-chalcogenides-cde-e-se-te-nano-crystals-0