02014nas a2200253   4500008004100000022001400041245010500055210006900160260007300229300001200302490000800314520111200322653001501434653002401449653001801473653001901491653001101510100001501521700001701536700001701553700002501570700003301595856013201628       2006                        eng d  a0304-885300aFinite size effects on the structural and magnetic properties of sol-gel synthesized NiFe2O4 powders0 aFinite size effects on the structural and magnetic properties of  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a190-1950 v3023 a<p>Nanoparticles of nickel ferrite have been synthesized by the sol-gel method and the effect of grain size oil its structural and magnetic properties have been Studied in detail. X-ray diffraction (XRD) studies revealed that all the samples are single phasic possessing the inverse spinel structure. Grain size of the sol-gel synthesized powders has been determined from the XRD data and the strain graph. A grain size of 9 nm was observed for the as prepared powders of NiFe2O4 obtained through the sol-gel method. It was also observed that strain was induced during the firing process. Magnetization measurements have been carried out on all the samples prepared in the present series. It was found that the specific magnetization of the nanosized NiFe2O4 powders was lower than that of the corresponding coarse-grained counterparts and decreased with a decrease in grain size. The coercivity of the sol-gel synthesized NiFe2O4 nanoparticles attained a maximum value when the grain size was 15 nm and then decreased as the grain size was increased further. (c) 2005 Elsevier B.V. All rights reserved.</p>10agrain size10amagnetic properties10aNanoparticles10aNickel ferrite10astrain1 aGeorge, M.1 aJohn, A., M.1 aNair, S., S.1 aJoy, Pattayil, Alias1 aAnantharaman, Maliemadom, R.  uhttps://library.ncl.res.in/content/finite-size-effects-structural-and-magnetic-properties-sol-gel-synthesized-nife2o4-powders-001863nas a2200229   4500008004100000022001400041245008100055210006900136260006900205300001200274490000800286520103800294653002401332653002601356653001501382653002401397100002701421700002501448700001901473700003301492856010801525       2010                        eng d  a0254-058400aOn the magnetic and dielectric properties of nickel-neoprene nanoconaposites0 amagnetic and dielectric properties of nickelneoprene nanoconapos  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAY  a154-1600 v1213 a<p>Nickel nanocomposites were prepared by incorporating nickel nanoparticles in a neoprene matrix according to a specific recipe for various loadings of nickel particles. The dielectric properties of these composites were evaluated for different frequencies ranging from 100 kHz to 8 MHz at different temperatures from 30 degrees C to 120 degrees C. The dielectric permittivity increases with increase of nickel concentration. Increase in temperature enhances the permittivity initially, till 40 degrees C and thereafter the permittivity decreases. The dielectric loss exhibits relaxation peaks and the peaks shift to lower frequencies with increase in volume fraction of the nickel nanoparticles in the matrix. The evaluation of magnetic and dielectric properties of these composites suggests that the dielectric permittivity can be tailored by an appropriate loading of the filler using semi-empirical equations and the magnetic properties vary according to simple mixture equations. (C) 2010 Elsevier B.V. All rights reserved.</p>10aComposite materials10adielectric properties10aElastomers10amagnetic properties1 aJamal, Muhammad, Abdul1 aJoy, Pattayil, Alias1 aKurian, Philip1 aAnantharaman, Maliemadom, R.  uhttps://library.ncl.res.in/content/magnetic-and-dielectric-properties-nickel-neoprene-nanoconaposites-001870nas a2200229   4500008004100000022001400041245009100055210006900146260005700215300001200272490000700284520104000291653002501331653002001356653002401376653001901400100002701419700002501446700001901471700003301490856011701523       2010                        eng d  a0170-083900aOn the magnetic, mechanical and rheological properties of rubber-nickel nanocomposites0 amagnetic mechanical and rheological properties of rubbernickel n  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcMAY  a907-9230 v643 a<p>Rubber-nickel nanocomposites were synthesized by incorporating freshly prepared nanometric nickel particles in two different matrices namely natural rubber and neoprene rubber according to specific recipes for various loadings of nano nickel and the cure characteristics of these composites were evaluated. The maximum torque values register an increase with the increase in loading of nickel in both composites and this is attributed to the non-interacting nature of nickel nanoparticles with rubber matrices. The cure time of natural rubber composites decreases with increase in the content of nickel, and in neoprene rubber cure, time increases with increase in filler content. In natural rubber, the curing reaction seems to be activated by the presence of nickel particles. The magnetization studies of the composites reveal that the magnetic properties of nickel are retained in the composite samples. The elastic modulus of natural rubber and neoprene rubber are largely improved by the incorporation of nickel particles.</p>10aCure characteristics10aElastic modulus10amagnetic properties10aNanocomposites1 aJamal, Muhammad, Abdul1 aJoy, Pattayil, Alias1 aKurian, Philip1 aAnantharaman, Maliemadom, R.  uhttps://library.ncl.res.in/content/magnetic-mechanical-and-rheological-properties-rubber-nickel-nanocomposites-0