<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Vader, V. T.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Gavali, L. V.</style></author><author><style face="normal" font="default" size="100%">Sasikala, R.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effect of sintering temperature and thermoelectric power studies of the system MgFe2-xCrxO4</style></title><secondary-title><style face="normal" font="default" size="100%">Solid State Sciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">synthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">Temperature effect</style></keyword><keyword><style  face="normal" font="default" size="100%">Thermoelectric studies</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">DEC</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">12</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">11</style></volume><pages><style face="normal" font="default" size="100%">2075-2079</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Mixed metal oxides showing the spinel structure exhibit interesting structural and electrical properties. Substances with specific compositions in the system MgFe2-xCrxO4 were synthesized by the simple co-precipitation method and have been investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM) to study the effect of temperature on the size of particles and grains. The infrared spectrum shows, two strong bands around 600 and 500 cm(-1). An elemental composition of one of the samples, MgFeCrO4 was found by energy dispersive X-ray spectroscopy (EDS). The thermoelectric power measurements carried out from room temperature to 500 degrees C, show both n-type and p-type behavior. (C) 2009 Elsevier Masson SAS. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">12</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.828</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Jadhav, S. D.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Sasikala, R.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Gas sensing properties of magnesium ferrite prepared by co-precipitation method</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Alloys and Compounds</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Ferrites</style></keyword><keyword><style  face="normal" font="default" size="100%">Gas sensor</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction and scanning electron microscopy</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">NOV</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE SA</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 564, 1001 LAUSANNE, SWITZERLAND</style></pub-location><volume><style face="normal" font="default" size="100%">488</style></volume><pages><style face="normal" font="default" size="100%">270-272</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Polycrystalline magnesium ferrite (MgFe(2)O(4)) was prepared by the co-precipitation method. The synthesized compound was characterized for their phase and morphology by X-ray diffraction and scanning electron microscopy, respectively. Conductance responses of the (MgFe(2)O(4)) were measured towards gases like hydrogen sulfide (H(2)S), liquefied petroleum gas (LPG), ethanol vapors (C(2)H(5)OH), SO(x), H(2), NO(x), NH(3), methanol, acetone and petrol. The gas sensing characterstics were obtained by measuring the sensitivity as a function of various controlling factors like operating temperatures and concentrations of gases. It was found that the sensor exhibited various responses towards these gases at different operating temperatures. Furthermore; the MgFe(2)O(4) based sensor exhibited a fast response and a good recovery towards petrol at temperature 250 degrees C. The results of the response towards petrol reveal that (MgFe(2)O(4)) synthesized by a simple co-precipitation method, would be a suitable material for the fabrication of the petrol sensor. (C) 2009 Published by Elsevier B.V.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.134</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Jadhav, S. D.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author><author><style face="normal" font="default" size="100%">Jadhav, K. M.</style></author><author><style face="normal" font="default" size="100%">Chougule, B. K.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Magnetic and dielectric properties of nanophase manganese-substituted lithium ferrite</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Magnetism and Magnetic Materials</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">dielectric constant</style></keyword><keyword><style  face="normal" font="default" size="100%">Ferrite</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnetization</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">OCT</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">19</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">321</style></volume><pages><style face="normal" font="default" size="100%">3270-3273</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Nanocrystalline manganese-substituted lithium ferrites viz. Li0.5Fe2.5-xMnxO4 (2.5 &amp;lt;= x &amp;gt;= 0) were prepared by sol-gel autocombustion method. X-ray diffraction analysis confirmed that as the concentration of manganese increases the cubic phase changes to the tetragonal phase. The variation of saturation magnetization was studied as a function of manganese content. All the compositions indicate that they are ferrimagnetic in nature. The dielectric constant, dielectric loss tangent and ac conductivity of all samples were measured at room temperature as a function of frequency. These parameters decrease with increase in frequency for all of the samples. The substitution of manganese plays an important role in changing the structural and magnetic properties of these ferrites. The compositional variation of dielectric constant and d.c. resistivity shows an inverse trend of variation with each other. (C) 2009 Elsevier B.V. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">19</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.689</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author><author><style face="normal" font="default" size="100%">Lokhande, P. D.</style></author><author><style face="normal" font="default" size="100%">Gajbhiye, N. S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Synthesis and characterization of CoCrxFe2-xO4 nanoparticles</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Alloys and Compounds</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Magnetic measurements</style></keyword><keyword><style  face="normal" font="default" size="100%">Sintering</style></keyword><keyword><style  face="normal" font="default" size="100%">transmission electron microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">OCT</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1-2</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE SA</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 564, 1001 LAUSANNE, SWITZERLAND</style></pub-location><volume><style face="normal" font="default" size="100%">485</style></volume><pages><style face="normal" font="default" size="100%">798-801</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Spinel-phase nanocrystalline CoCrxFe2-xO4 powders (0.0 &amp;lt;= x &amp;lt;= 2.0) were synthesized by citrate-gel precursor method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). transmission electron microscopy (TEM) and infra-red spectroscopy (FT-IR). The XRD and selected-area electron diffraction (SAED) patterns indicated that the synthesized nanoparticles have single-phase spinet structure without the presence of any other impurities. The changes in electrical and magnetic properties of different stiochiometric compositions have also been investigated. It is seen that with increase in chromium contents, the measured magnetic hysteresis loops become narrow with decreasing trend in saturation magnetization. Electrical resistivity indicated that all the compounds are semiconducting nature. (C) 2009 Elsevier B.V. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">1-2</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.134</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Jadhav, S. D.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Chavan, Santosh S.</style></author><author><style face="normal" font="default" size="100%">Waghmare, K. J.</style></author><author><style face="normal" font="default" size="100%">Chougule, B. K.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Synthesis, characterization and effect of sintering temperature on magnetic properties of MgNi ferrite prepared by co-precipitation method</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Alloys and Compounds</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Chemical synthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">Ferrites</style></keyword><keyword><style  face="normal" font="default" size="100%">FT-IR</style></keyword><keyword><style  face="normal" font="default" size="100%">scanning electron microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">MAY</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1-2</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE SA</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 564, 1001 LAUSANNE, SWITZERLAND</style></pub-location><volume><style face="normal" font="default" size="100%">475</style></volume><pages><style face="normal" font="default" size="100%">926-929</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Mixed MgNi ferrites with composition Mg(0.5)Ni(0.5)Fe(2)O(4) where the mole fraction for Ni (x = 0, 0.25, 0.75, 0.5 and 1) were prepared by following co-precipitation method at temperature 110 degrees C and maintaining a pH of solution equal to 9.5 enable to achieve large particle surface area. The resultant materials obtained in powder form were sintered at different temperatures. Thermogravimetry (TGA), X-ray diffraction (XRD) and scanning electron microscopy, technique were applied to obtain structural parameters. The XRD patterns reveal the presence of(311) peak as the most intense one. The intensity of XRD peak increases with increase in sintering temperature. The saturation magnetization values showed increasing trend with increase in sintering temperature from 2.37 to 29.76 emu/g. These results along with the analysis of SEM micrographs are interpreted in terms of increase in particle grain size with increase in sintering temperature. (C) 2008 Elsevier B.V. All rights reserved.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">1-2</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.134</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Garadkar, K. M.</style></author><author><style face="normal" font="default" size="100%">Sasikala, R.</style></author><author><style face="normal" font="default" size="100%">Tripathi, A. K.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Magnetic, dielectric and complex impedance spectroscopic studies of nanocrystalline Cr substituted Li-ferrite</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Magnetism and Magnetic Materials</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Complex impedance</style></keyword><keyword><style  face="normal" font="default" size="100%">dielectric response</style></keyword><keyword><style  face="normal" font="default" size="100%">Ferrites</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnetic hysteresis</style></keyword><keyword><style  face="normal" font="default" size="100%">Sol-gel synthesis</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">SEP</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">18</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE BV</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">322</style></volume><pages><style face="normal" font="default" size="100%">2629-2633</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Nanocrystalline Li0.5Fe2.5-xCrxO4 (2.5 &amp;lt;= x &amp;gt;= 0) ferrites were prepared by a sol-gel autocombustion route. X-ray diffraction was employed to confirm the cubic spinel phase formation of the ferrites. The lattice parameter decreases with increase in Cr content. The saturation magnetization, coercivity and remanance were studied as a function of Cr content. The dielectric constant and dielectric loss were measured as a function of frequency in the frequency range 20 Hz-1 MHz. Frequency dependence of dielectric constant shows dielectric dispersion due to the Maxwell-Wagner type of interfacial polarization. In order to understand the conduction mechanism, complex impedance measurements were carried out. The substitution of chromium plays an important role in changing the dielectric and magnetic properties of lithium ferrites. (C) 2010 Published by Elsevier B.V.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">18</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.689</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author><author><style face="normal" font="default" size="100%">Sasikala, R.</style></author><author><style face="normal" font="default" size="100%">Tripathi, A. K.</style></author><author><style face="normal" font="default" size="100%">Garadkar, K. M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Synthesis and characterization of nanocrystalline zinc substituted nickel ferrites</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Alloys and Compounds</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Electron microscopy</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnetic</style></keyword><keyword><style  face="normal" font="default" size="100%">Sintering</style></keyword><keyword><style  face="normal" font="default" size="100%">X-ray diffraction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2010</style></year><pub-dates><date><style  face="normal" font="default" size="100%">APR</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1-2</style></number><publisher><style face="normal" font="default" size="100%">ELSEVIER SCIENCE SA</style></publisher><pub-location><style face="normal" font="default" size="100%">PO BOX 564, 1001 LAUSANNE, SWITZERLAND</style></pub-location><volume><style face="normal" font="default" size="100%">496</style></volume><pages><style face="normal" font="default" size="100%">256-260</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Nanocrystalline zinc substituted nickel ferrites, Ni(1-x)Zn(x)Fe(2)O(4) (0.0 &amp;lt;= x &amp;lt;= 1.0) have been prepared by citrate gel auto-combustion method. The effect of zinc ion content on structural, electrical transport and magnetic properties has been studied. The X-ray diffraction (XRD) pattern revealed that, all the compositions possess single-phase spinel structure. The nano-sized grain structure formation was confirmed by transmission electron microscopy (TEM). The dc electrical resistivity shows the samples are semiconducting in nature. The magnetic measurements showed that the composition Ni(0.6)Zn(0.4)Fe(2)O(4) has maximum saturation magnetization (M(s)) while high coersivity (Hc) for ZnFe(2)O(4). Thermoelectric power measurement study showed that the compounds, with x &amp;lt;= 0.4 are p-type and for x &amp;gt; 0.4 behaves n-type conduction mechanism. (C) 2010 Published by Elsevier B.V.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">1-2</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">2.134</style></custom4></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hankare, P. P.</style></author><author><style face="normal" font="default" size="100%">Vader, V. T.</style></author><author><style face="normal" font="default" size="100%">Sankpal, U. B.</style></author><author><style face="normal" font="default" size="100%">Patil, R. P.</style></author><author><style face="normal" font="default" size="100%">Jadhav, A. V.</style></author><author><style face="normal" font="default" size="100%">Mulla, Imtiaz S.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Synthesis and characterization of cobalt substituted zinc ferri-chromites prepared by sol-gel auto-combustion method</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Materials Science-Materials in Electronics</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">AUG</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">8</style></number><publisher><style face="normal" font="default" size="100%">SPRINGER</style></publisher><pub-location><style face="normal" font="default" size="100%">VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS</style></pub-location><volume><style face="normal" font="default" size="100%">22</style></volume><pages><style face="normal" font="default" size="100%">1109-1115</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Mixed metal oxides having spinel structure shows interesting structural properties. In the present investigation, cobalt substituted zinc ferri-chromites were prepared by sol-gel auto-combustion method. The completion of solid state reaction and the formation of spinel phase were identified using X-ray diffraction technique. All the compounds exhibit cubic spinel symmetry and lattice constant shows an irregular trend with substitution of Co. Infra-red spectral studies shows an two strong bands, one around 600 cm(-1) which is attributed to the intrinsic vibrations of tetrahedral complexes and the other at 400 cm(-1) is due to octahedral one. The morphology and size of the particles was found out by scanning electron microscopy while the elemental compositions by elemental dispersive X-ray spectroscopy. The various compounds of the present system Zn1-xCoxFeCrO4 were also investigated for their thermal and electronic studies.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">1.076
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