Magnetic properties of Cofe1.9RE0.1O4 nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol
Identifieur interne : 000121 ( PascalFrancis/Corpus ); précédent : 000120; suivant : 000122Magnetic properties of Cofe1.9RE0.1O4 nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol
Auteurs : L. Ben Tahar ; M. Artus ; S. Ammar ; L. S. Smiri ; F. Herbst ; M.-J. Vaulay ; V. Richard ; J.-M. Greneche ; F. Villain ; F. FievetSource :
- Journal of magnetism and magnetic materials [ 0304-8853 ] ; 2008.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Highly crystalline Cofe1.9RE0.1O4 ferrite nanoparticles, where RE = La, Ce, Nd, Sm, Eu, Gd, Tb, and Ho, have been synthesized by forced hydrolysis in polyol. X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), 57 Fe Mossbauer spectrometry, Co K-edge X-ray absorption spectroscopy and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution RE3+ ions for Fe3+ ones on the structure, the microstructure, the chemical homogeneity, and the magnetic properties of the cobalt ferrite system. All the produced particles are superparamagnetic at room temperature. Nevertheless, the substitution causes reduction of the blocking temperature which is mainly ascribed to partial cation exchange among the spinel-like sublattices of CoFe2O4 induced by the insertion of the relatively large RE3+ ions. The low-temperature saturation magnetization and coercivity appear to be greatly affected by the nature of RE3+ ions-maxima values were found for Gd3+ and Eu3+, respectively.
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NO : | PASCAL 08-0518493 INIST |
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ET : | Magnetic properties of Cofe1.9RE0.1O4 nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol |
AU : | BEN TAHAR (L.); ARTUS (M.); AMMAR (S.); SMIRI (L. S.); HERBST (F.); VAULAY (M.-J.); RICHARD (V.); GRENECHE (J.-M.); VILLAIN (F.); FIEVET (F.) |
AF : | Unité de Recherche 99/UR12-30, Faculté des Sciences de Bizerte/7021 Jarzouna/Tunisie (1 aut., 4 aut.); ITODYS, Université Paris Diderot, UMR-CNRS 7086, 2 Place Jussieu/75251 Paris/France (2 aut., 3 aut., 5 aut., 6 aut., 10 aut.); LMPTM, Institut Galilée, UPR-CNRS 9001, 99 Avenue Jean-Baptiste Clément/93430 Villetaneuse/France (7 aut.); LPEC, Université du Maine, UMR-CNRS 6087, Avenue Olivier Messiaen/72085 Le Mans/France (8 aut.); LCI2M, Université Paris 6. UMR-CNRS 7071, 4 Place Jussieu/75251 Paris/France (9 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2008; Vol. 320; No. 23; Pp. 3242-3250; Bibl. 45 ref. |
LA : | Anglais |
EA : | Highly crystalline Cofe1.9RE0.1O4 ferrite nanoparticles, where RE = La, Ce, Nd, Sm, Eu, Gd, Tb, and Ho, have been synthesized by forced hydrolysis in polyol. X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), 57 Fe Mossbauer spectrometry, Co K-edge X-ray absorption spectroscopy and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution RE3+ ions for Fe3+ ones on the structure, the microstructure, the chemical homogeneity, and the magnetic properties of the cobalt ferrite system. All the produced particles are superparamagnetic at room temperature. Nevertheless, the substitution causes reduction of the blocking temperature which is mainly ascribed to partial cation exchange among the spinel-like sublattices of CoFe2O4 induced by the insertion of the relatively large RE3+ ions. The low-temperature saturation magnetization and coercivity appear to be greatly affected by the nature of RE3+ ions-maxima values were found for Gd3+ and Eu3+, respectively. |
CC : | 001B70E75 |
FD : | Propriété magnétique; Composition chimique; Diffraction RX; Microscopie électronique transmission; Spectre perte énergie électron; Effet Mössbauer; Spectre absorption RX; Substitution ion; Microstructure; Fer Cobalt Lanthanide Oxyde Mixte; Nanoparticule; Ferrites; Particule magnétique |
ED : | Magnetic properties; Chemical composition; XRD; Transmission electron microscopy; Electron energy loss spectra; Moessbauer effect; X-ray absorption spectra; Ion substitution; Microstructure; Iron Cobalt Rare earths Oxides Mixed; Nanoparticles; Ferrites; Magnetic particles |
SD : | Sustitución ión; Mixto |
LO : | INIST-17230.354000184279560070 |
ID : | 08-0518493 |
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Pascal:08-0518493Le document en format XML
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RE<sub>0.1</sub>
O<sub>4</sub>
nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol</title>
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<series><title level="j" type="main">Journal of magnetism and magnetic materials</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chemical composition</term>
<term>Electron energy loss spectra</term>
<term>Ferrites</term>
<term>Ion substitution</term>
<term>Iron Cobalt Rare earths Oxides Mixed</term>
<term>Magnetic particles</term>
<term>Magnetic properties</term>
<term>Microstructure</term>
<term>Moessbauer effect</term>
<term>Nanoparticles</term>
<term>Transmission electron microscopy</term>
<term>X-ray absorption spectra</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Propriété magnétique</term>
<term>Composition chimique</term>
<term>Diffraction RX</term>
<term>Microscopie électronique transmission</term>
<term>Spectre perte énergie électron</term>
<term>Effet Mössbauer</term>
<term>Spectre absorption RX</term>
<term>Substitution ion</term>
<term>Microstructure</term>
<term>Fer Cobalt Lanthanide Oxyde Mixte</term>
<term>Nanoparticule</term>
<term>Ferrites</term>
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<front><div type="abstract" xml:lang="en">Highly crystalline Cofe<sub>1.9</sub>
RE<sub>0.1</sub>
O<sub>4</sub>
ferrite nanoparticles, where RE = La, Ce, Nd, Sm, Eu, Gd, Tb, and Ho, have been synthesized by forced hydrolysis in polyol. X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), <sup>57</sup>
Fe Mossbauer spectrometry, Co K-edge X-ray absorption spectroscopy and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution RE<sup>3+</sup>
ions for Fe<sup>3+</sup>
ones on the structure, the microstructure, the chemical homogeneity, and the magnetic properties of the cobalt ferrite system. All the produced particles are superparamagnetic at room temperature. Nevertheless, the substitution causes reduction of the blocking temperature which is mainly ascribed to partial cation exchange among the spinel-like sublattices of CoFe<sub>2</sub>
O<sub>4</sub>
induced by the insertion of the relatively large RE<sup>3+</sup>
ions. The low-temperature saturation magnetization and coercivity appear to be greatly affected by the nature of RE<sup>3+</sup>
ions-maxima values were found for Gd<sup>3+</sup>
and Eu<sup>3+</sup>
, respectively.</div>
</front>
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<fA08 i1="01" i2="1" l="ENG"><s1>Magnetic properties of Cofe<sub>1.9</sub>
RE<sub>0.1</sub>
O<sub>4</sub>
nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol</s1>
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<fA11 i1="03" i2="1"><s1>AMMAR (S.)</s1>
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<fA11 i1="04" i2="1"><s1>SMIRI (L. S.)</s1>
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<fA11 i1="10" i2="1"><s1>FIEVET (F.)</s1>
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<s2>75251 Paris</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<fA14 i1="03"><s1>LMPTM, Institut Galilée, UPR-CNRS 9001, 99 Avenue Jean-Baptiste Clément</s1>
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<sZ>7 aut.</sZ>
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<s2>72085 Le Mans</s2>
<s3>FRA</s3>
<sZ>8 aut.</sZ>
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<fA14 i1="05"><s1>LCI2M, Université Paris 6. UMR-CNRS 7071, 4 Place Jussieu</s1>
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<fC01 i1="01" l="ENG"><s0>Highly crystalline Cofe<sub>1.9</sub>
RE<sub>0.1</sub>
O<sub>4</sub>
ferrite nanoparticles, where RE = La, Ce, Nd, Sm, Eu, Gd, Tb, and Ho, have been synthesized by forced hydrolysis in polyol. X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), <sup>57</sup>
Fe Mossbauer spectrometry, Co K-edge X-ray absorption spectroscopy and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution RE<sup>3+</sup>
ions for Fe<sup>3+</sup>
ones on the structure, the microstructure, the chemical homogeneity, and the magnetic properties of the cobalt ferrite system. All the produced particles are superparamagnetic at room temperature. Nevertheless, the substitution causes reduction of the blocking temperature which is mainly ascribed to partial cation exchange among the spinel-like sublattices of CoFe<sub>2</sub>
O<sub>4</sub>
induced by the insertion of the relatively large RE<sup>3+</sup>
ions. The low-temperature saturation magnetization and coercivity appear to be greatly affected by the nature of RE<sup>3+</sup>
ions-maxima values were found for Gd<sup>3+</sup>
and Eu<sup>3+</sup>
, respectively.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B70E75</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Propriété magnétique</s0>
<s5>02</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Magnetic properties</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Composition chimique</s0>
<s5>03</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Chemical composition</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Diffraction RX</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>XRD</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Microscopie électronique transmission</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Transmission electron microscopy</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Spectre perte énergie électron</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Electron energy loss spectra</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Effet Mössbauer</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Moessbauer effect</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Spectre absorption RX</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>X-ray absorption spectra</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Substitution ion</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Ion substitution</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Sustitución ión</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE"><s0>Microstructure</s0>
<s5>10</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG"><s0>Microstructure</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Fer Cobalt Lanthanide Oxyde Mixte</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Iron Cobalt Rare earths Oxides Mixed</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Mixto</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Nanoparticule</s0>
<s5>15</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Nanoparticles</s0>
<s5>15</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Ferrites</s0>
<s5>16</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Ferrites</s0>
<s5>16</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Particule magnétique</s0>
<s5>20</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Magnetic particles</s0>
<s5>20</s5>
</fC03>
<fN21><s1>343</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 08-0518493 INIST</NO>
<ET>Magnetic properties of Cofe<sub>1.9</sub>
RE<sub>0.1</sub>
O<sub>4</sub>
nanoparticles (RE = La, Ce, Nd, Sm, Eu, Gd, Tb, Ho) prepared in polyol</ET>
<AU>BEN TAHAR (L.); ARTUS (M.); AMMAR (S.); SMIRI (L. S.); HERBST (F.); VAULAY (M.-J.); RICHARD (V.); GRENECHE (J.-M.); VILLAIN (F.); FIEVET (F.)</AU>
<AF>Unité de Recherche 99/UR12-30, Faculté des Sciences de Bizerte/7021 Jarzouna/Tunisie (1 aut., 4 aut.); ITODYS, Université Paris Diderot, UMR-CNRS 7086, 2 Place Jussieu/75251 Paris/France (2 aut., 3 aut., 5 aut., 6 aut., 10 aut.); LMPTM, Institut Galilée, UPR-CNRS 9001, 99 Avenue Jean-Baptiste Clément/93430 Villetaneuse/France (7 aut.); LPEC, Université du Maine, UMR-CNRS 6087, Avenue Olivier Messiaen/72085 Le Mans/France (8 aut.); LCI2M, Université Paris 6. UMR-CNRS 7071, 4 Place Jussieu/75251 Paris/France (9 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of magnetism and magnetic materials; ISSN 0304-8853; Coden JMMMDC; Pays-Bas; Da. 2008; Vol. 320; No. 23; Pp. 3242-3250; Bibl. 45 ref.</SO>
<LA>Anglais</LA>
<EA>Highly crystalline Cofe<sub>1.9</sub>
RE<sub>0.1</sub>
O<sub>4</sub>
ferrite nanoparticles, where RE = La, Ce, Nd, Sm, Eu, Gd, Tb, and Ho, have been synthesized by forced hydrolysis in polyol. X-ray diffraction (XRD), transmission electron microscopy (TEM), electron energy-loss spectroscopy (EELS), <sup>57</sup>
Fe Mossbauer spectrometry, Co K-edge X-ray absorption spectroscopy and magnetic measurements using a SQUID magnetometer were employed to investigate the effect of the substitution RE<sup>3+</sup>
ions for Fe<sup>3+</sup>
ones on the structure, the microstructure, the chemical homogeneity, and the magnetic properties of the cobalt ferrite system. All the produced particles are superparamagnetic at room temperature. Nevertheless, the substitution causes reduction of the blocking temperature which is mainly ascribed to partial cation exchange among the spinel-like sublattices of CoFe<sub>2</sub>
O<sub>4</sub>
induced by the insertion of the relatively large RE<sup>3+</sup>
ions. The low-temperature saturation magnetization and coercivity appear to be greatly affected by the nature of RE<sup>3+</sup>
ions-maxima values were found for Gd<sup>3+</sup>
and Eu<sup>3+</sup>
, respectively.</EA>
<CC>001B70E75</CC>
<FD>Propriété magnétique; Composition chimique; Diffraction RX; Microscopie électronique transmission; Spectre perte énergie électron; Effet Mössbauer; Spectre absorption RX; Substitution ion; Microstructure; Fer Cobalt Lanthanide Oxyde Mixte; Nanoparticule; Ferrites; Particule magnétique</FD>
<ED>Magnetic properties; Chemical composition; XRD; Transmission electron microscopy; Electron energy loss spectra; Moessbauer effect; X-ray absorption spectra; Ion substitution; Microstructure; Iron Cobalt Rare earths Oxides Mixed; Nanoparticles; Ferrites; Magnetic particles</ED>
<SD>Sustitución ión; Mixto</SD>
<LO>INIST-17230.354000184279560070</LO>
<ID>08-0518493</ID>
</server>
</inist>
</record>
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