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Enhanced magnetic and magnetoelectric properties of In and Co codoped BiFeO3 nanoparticles at room temperature

Identifieur interne : 000132 ( Main/Repository ); précédent : 000131; suivant : 000133

Enhanced magnetic and magnetoelectric properties of In and Co codoped BiFeO3 nanoparticles at room temperature

Auteurs : RBID : Pascal:14-0084481

Descripteurs français

Pascal (Inist)
- Propriété magnétique, Effet magnétoélectrique, Codopage, Nanoparticule, Nanomatériau, Ethane-«1,2»-diol, Synthèse combustion, Diffraction RX, Réseau rhomboédrique, Dopage, Spectrométrie transformée Fourier, Spectrométrie FTIR, Addition indium, Distorsion réseau, Matériau multiferroïque, Morphologie surface, Porosité, Grosseur grain, Microscopie électronique transmission, Dimension particule, Ferromagnétisme, Aimantation saturation, Point Néel, Température transition, Effet dimensionnel, Matériau magnétique, Traitement matériau, BiFeO3, 7575, 8107B, 7550T.
Wicri :
- concept : Dopage.

English descriptors

KwdEn :
- Codoping, Combustion synthesis, Doping, Ethylene glycol, Ferroic material, Ferromagnetism, Fourier transform spectroscopy, Fourier-transformed infrared spectrometry, Grain size, Indium additions, Lattice distortion, Magnetic materials, Magnetic properties, Magnetoelectric effects, Material processing, Nanoparticles, Nanostructured materials, Neel temperature, Particle size, Porosity, Saturation magnetization, Size effect, Surface morphology, Transition temperature, Transmission electron microscopy, Trigonal lattices, XRD.

Abstract

Bi_1-xIn_xFe_1-yCo_yO₃ (0 ≤ x ≤ 0.1, 0 ≤ y ≤ 0.05) nanoparticles have been successively synthesized by low temperature ethylene glycol based solution combustion method. The XRD patterns reveal the single phase rhombohedral distorted perovskite structure for pure BiFeO₃ (BFO), and In doped BFO sample which is further confirmed from FTIR spectra. The co-doping of In and Co at A-B-sites of BFO results in structural distortion, improves the particles surface morphology in term of porosity, homogeneity, and density with further reduction of grain sizes. The TEM images also confirm the reduction, the average particle size showing particles size of 52 nm for BFO to around 12 nm for codoped BFO sample. All samples show ferromagnetic behavior at room temperature which further improves upon codoping with maximum saturation magnetization of 6.30 emu/gm. The codoping further follows a direct correspondence among lowering of Neel transition temperature (T_N ˜ 240 °C), improvement in resistive behavior and enhancement of magnetoelectric effect (α ˜ 4.92 mV/cmOe) at room temperature. The possible origin of improvement in these properties has been explained on the basis of size effect and nature of the dopants.

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Le document en format XML

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 nanoparticles at room temperature</title>
<author><name sortKey="Arya, G S" uniqKey="Arya G">G. S. Arya</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Himachal Pradesh University</s1>
<s2>Shimla 171005</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>Shimla 171005</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Kotnala, R K" uniqKey="Kotnala R">R. K. Kotnala</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>National Physical Laboratory</s1>
<s2>New Delhi 110012</s2>
<s3>IND</s3>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Inde</country>
<wicri:noRegion>National Physical Laboratory</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Negi, N S" uniqKey="Negi N">N. S. Negi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Physics, Himachal Pradesh University</s1>
<s2>Shimla 171005</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
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<country>Inde</country>
<wicri:noRegion>Shimla 171005</wicri:noRegion>
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<seriesStmt><idno type="ISSN">1388-0764</idno>
<title level="j" type="abbreviated">J. nanopart. res.</title>
<title level="j" type="main">Journal of nanoparticle research</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Codoping</term>
<term>Combustion synthesis</term>
<term>Doping</term>
<term>Ethylene glycol</term>
<term>Ferroic material</term>
<term>Ferromagnetism</term>
<term>Fourier transform spectroscopy</term>
<term>Fourier-transformed infrared spectrometry</term>
<term>Grain size</term>
<term>Indium additions</term>
<term>Lattice distortion</term>
<term>Magnetic materials</term>
<term>Magnetic properties</term>
<term>Magnetoelectric effects</term>
<term>Material processing</term>
<term>Nanoparticles</term>
<term>Nanostructured materials</term>
<term>Neel temperature</term>
<term>Particle size</term>
<term>Porosity</term>
<term>Saturation magnetization</term>
<term>Size effect</term>
<term>Surface morphology</term>
<term>Transition temperature</term>
<term>Transmission electron microscopy</term>
<term>Trigonal lattices</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Propriété magnétique</term>
<term>Effet magnétoélectrique</term>
<term>Codopage</term>
<term>Nanoparticule</term>
<term>Nanomatériau</term>
<term>Ethane-«1,2»-diol</term>
<term>Synthèse combustion</term>
<term>Diffraction RX</term>
<term>Réseau rhomboédrique</term>
<term>Dopage</term>
<term>Spectrométrie transformée Fourier</term>
<term>Spectrométrie FTIR</term>
<term>Addition indium</term>
<term>Distorsion réseau</term>
<term>Matériau multiferroïque</term>
<term>Morphologie surface</term>
<term>Porosité</term>
<term>Grosseur grain</term>
<term>Microscopie électronique transmission</term>
<term>Dimension particule</term>
<term>Ferromagnétisme</term>
<term>Aimantation saturation</term>
<term>Point Néel</term>
<term>Température transition</term>
<term>Effet dimensionnel</term>
<term>Matériau magnétique</term>
<term>Traitement matériau</term>
<term>BiFeO3</term>
<term>7575</term>
<term>8107B</term>
<term>7550T</term>
</keywords>
<keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Dopage</term>
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<front><div type="abstract" xml:lang="en">Bi<sub>1-x</sub>
In<sub>x</sub>
Fe<sub>1-y</sub>
Co<sub>y</sub>
O<sub>3</sub>
 (0 ≤ x ≤ 0.1, 0 ≤ y ≤ 0.05) nanoparticles have been successively synthesized by low temperature ethylene glycol based solution combustion method. The XRD patterns reveal the single phase rhombohedral distorted perovskite structure for pure BiFeO<sub>3</sub>
 (BFO), and In doped BFO sample which is further confirmed from FTIR spectra. The co-doping of In and Co at A-B-sites of BFO results in structural distortion, improves the particles surface morphology in term of porosity, homogeneity, and density with further reduction of grain sizes. The TEM images also confirm the reduction, the average particle size showing particles size of 52 nm for BFO to around 12 nm for codoped BFO sample. All samples show ferromagnetic behavior at room temperature which further improves upon codoping with maximum saturation magnetization of 6.30 emu/gm. The codoping further follows a direct correspondence among lowering of Neel transition temperature (T<sub>N</sub>
 ˜ 240 °C), improvement in resistive behavior and enhancement of magnetoelectric effect (α ˜ 4.92 mV/cmOe) at room temperature. The possible origin of improvement in these properties has been explained on the basis of size effect and nature of the dopants.</div>
</front>
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Fe<sub>1-y</sub>
Co<sub>y</sub>
O<sub>3</sub>
 (0 ≤ x ≤ 0.1, 0 ≤ y ≤ 0.05) nanoparticles have been successively synthesized by low temperature ethylene glycol based solution combustion method. The XRD patterns reveal the single phase rhombohedral distorted perovskite structure for pure BiFeO<sub>3</sub>
 (BFO), and In doped BFO sample which is further confirmed from FTIR spectra. The co-doping of In and Co at A-B-sites of BFO results in structural distortion, improves the particles surface morphology in term of porosity, homogeneity, and density with further reduction of grain sizes. The TEM images also confirm the reduction, the average particle size showing particles size of 52 nm for BFO to around 12 nm for codoped BFO sample. All samples show ferromagnetic behavior at room temperature which further improves upon codoping with maximum saturation magnetization of 6.30 emu/gm. The codoping further follows a direct correspondence among lowering of Neel transition temperature (T<sub>N</sub>
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Enhanced magnetic and magnetoelectric properties of In and Co codoped BiFeO3 nanoparticles at room temperature

Enhanced magnetic and magnetoelectric properties of In and Co codoped BiFeO3 nanoparticles at room temperature

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Abstract

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