01446nas a2200205   4500008004100000022001400041245010700055210006900162260009500231300001200326490000600338520063300344653002400977653001801001653002301019653002301042100002101065700002501086856012901111       2009                        eng d  a1941-490000aSuperparamagnetic nanocomposite of magnetite and activated carbon for removal of dyes from waste water0 aSuperparamagnetic nanocomposite of magnetite and activated carbo  a25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USAbAMER SCIENTIFIC PUBLISHERScDEC  a171-1750 v13 a<p>Nanocomposite of superparamagnetic Fe(3)O(4) and activated carbon (AC) is synthesized at room temperature and characterized by various techniques. Magnetic measurements indicated that the Fe(3)O(4) nanoparticles are isolated by the AC particles. The magnetic fluid obtained by dispersion of the nanocomposite in water is found to be relatively stable. The dispersion is found to be very efficient for the removal of methylene blue dye from water. Thus, the nanocomposite is highly suitable for removing dissolved dyes and other contaminants from waste water by a simple magnetic separation process after adsorption on AC.</p>10aMagnetic Separation10aNanocomposite10aSuperparamagnetism10aWater Purification1 aThakuria, Pankaj1 aJoy, Pattayil, Alias  uhttps://library.ncl.res.in/content/superparamagnetic-nanocomposite-magnetite-and-activated-carbon-removal-dyes-waste-water-001483nas a2200157   4500008004100000022001400041245008800055210006900143260012500212300001100337490000700348520080200355100002101157700002501178856012201203       2010                        eng d  a0003-695100aHigh room temperature ferromagnetic moment of Ho substituted nanocrystalline BiFeO30 aHigh room temperature ferromagnetic moment of Ho substituted nan  aCIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScOCT  a1625040 v973 a<p>Magnetic properties of trivalent rare-earth ion substituted nanocrystalline BiFeO3 have been studied for the compositions Bi0.875R0.125FeO3 (R=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb). All compositions show ferromagnetic characteristics at room temperature, with enhanced magnetization after substitution. Very high magnetization (at 6 T), almost three times that of the unsubstituted composition, is observed for R=Ho, and highest remnant magnetization is obtained for R=Nd and Sm. The magnetic transition temperature is increased by similar to 20 K for R=La. The results show that it is possible to tune the magnetic characteristics of the nanocrystalline multiferroic BiFeO3 by the choice of the rare-earth ion. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3502481]</p>1 aThakuria, Pankaj1 aJoy, Pattayil, Alias  uhttps://library.ncl.res.in/content/high-room-temperature-ferromagnetic-moment-ho-substituted-nanocrystalline-bifeo3-0