Structural, magnetic and electrical properties of (La0.70-xNdx)Sr0.30Mn0.70Cr0.30O3 with 0≤x≤0.30
Identifieur interne : 004B31 ( Main/Repository ); précédent : 004B30; suivant : 004B32Structural, magnetic and electrical properties of (La0.70-xNdx)Sr0.30Mn0.70Cr0.30O3 with 0≤x≤0.30
Auteurs : RBID : Pascal:10-0029919Descripteurs français
- Pascal (Inist)
- Propriété magnétique, Propriété électrique, Structure cristalline, Réseau rhomboédrique, Point Curie, Susceptibilité magnétique, Structure spin incliné, Addition néodyme, Addition indium, Ferromagnétique, Antiferromagnétisme, Interaction échange, Aimantation, Conductivité électrique, Réseau orthorhombique, Matériau ferromagnétique, Semiconductivité, Dépendance température, Méthode Rietveld, Système spin, 6166, 7550C.
English descriptors
- KwdEn :
- Antiferromagnetism, Canted spin arrangements, Crystal structure, Curie point, Electrical conductivity, Electrical properties, Exchange interactions, Ferromagnetic materials, Indium additions, Magnetic properties, Magnetic susceptibility, Magnetization, Neodymium additions, Orthorhombic lattices, Rietveld method, Semiconductivity, Spin systems, Temperature dependence, Trigonal lattices.
Abstract
The structural, magnetic and electrical properties of (La0.70-xNdx)Sr0.30Mn0.70Cr0.30O3 perovskite (0 ≤ x ≤ 0.30) prepared by the usual ceramic procedure were investigated. Structural Rietveld refinemen revealed that these compounds crystallize in a rhombohedral (R3c) perovskite structure when x = 0, 0.1 and 0.20, while for x 0.30 the structure becomes orthorhombic (Pbnm). It was found that the substitutio of La by Nd reduces the Curie temperature (TC). The FC, ZFC, M(H) and AC susceptibility measurement show typical canted-antiferromagnetism for the Nd-doped samples, in which a ferromagnetic compo nent coexists with predominant antiferromagnetic interactions. The values of the magnetization (M(H) decrease very slightly when increasing the Nd content, compared to the undoped sample (Ms values a 5 T and 2 K are, respectively, 47.9, 47.3 and 47.5 emu/g for x=0.10, 0.20 and 0.30, compared to 48.2 emu/ for x=0), indicating that the Nd3+ contribution is negligible compared to the total moment of the fer romagnetic (Mn/Cr) network. The resistivity increases by several orders of magnitude with Nd-dopin and the semi-conducting behaviour persists in the whole temperature range. The interaction betwee Mn4+ -O-Cr3+and Cr3+ -O-Cr3+ is responsible for the semi-conducting state.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Structural, magnetic and electrical properties of (La<sub>0.70-x</sub>Nd<sub>x</sub>)Sr<sub>0.30</sub>Mn<sub>0.70</sub>Cr<sub>0.30</sub>O<sub>3</sub> with 0≤x≤0.30</title><author><name sortKey="Hagaza, Ahmed" uniqKey="Hagaza A">Ahmed Hagaza</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physico-chimie des Matériaux, Département de Physique, Faculté des Sciences de Monastir, BP22</s1><s2>5019 Monastir</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>5019 Monastir</wicri:noRegion></affiliation></author><author><name sortKey="Kallel, Nabil" uniqKey="Kallel N">Nabil Kallel</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physico-chimie des Matériaux, Département de Physique, Faculté des Sciences de Monastir, BP22</s1><s2>5019 Monastir</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>5019 Monastir</wicri:noRegion></affiliation></author><author><name sortKey="Kallel, Sami" uniqKey="Kallel S">Sami Kallel</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Physico-chimie des Matériaux, Département de Physique, Faculté des Sciences de Monastir, BP22</s1><s2>5019 Monastir</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>5019 Monastir</wicri:noRegion></affiliation></author><author><name sortKey="Guizouarn, Thierry" uniqKey="Guizouarn T">Thierry Guizouarn</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Sciences Chimiques de Rennes, UMR 6226-CNRS. Université de Rennes 1</s1><s2>35042 Rennes</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Bretagne</region><settlement type="city">Rennes</settlement></placeName><orgName type="university">Université de Rennes 1</orgName></affiliation></author><author><name sortKey="Pena, Octavio" uniqKey="Pena O">Octavio Pena</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Sciences Chimiques de Rennes, UMR 6226-CNRS. Université de Rennes 1</s1><s2>35042 Rennes</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Région Bretagne</region><settlement type="city">Rennes</settlement></placeName><orgName type="university">Université de Rennes 1</orgName></affiliation></author><author><name sortKey="Oumezzine, Mohamed" uniqKey="Oumezzine M">Mohamed Oumezzine</name></author></titleStmt><publicationStmt><idno type="inist">10-0029919</idno><date when="2009">2009</date><idno type="stanalyst">PASCAL 10-0029919 INIST</idno><idno type="RBID">Pascal:10-0029919</idno><idno type="wicri:Area/Main/Corpus">004C09</idno><idno type="wicri:Area/Main/Repository">004B31</idno></publicationStmt><seriesStmt><idno type="ISSN">0925-8388</idno><title level="j" type="abbreviated">J. alloys compd.</title><title level="j" type="main">Journal of alloys and compounds</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiferromagnetism</term><term>Canted spin arrangements</term><term>Crystal structure</term><term>Curie point</term><term>Electrical conductivity</term><term>Electrical properties</term><term>Exchange interactions</term><term>Ferromagnetic materials</term><term>Indium additions</term><term>Magnetic properties</term><term>Magnetic susceptibility</term><term>Magnetization</term><term>Neodymium additions</term><term>Orthorhombic lattices</term><term>Rietveld method</term><term>Semiconductivity</term><term>Spin systems</term><term>Temperature dependence</term><term>Trigonal lattices</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Propriété magnétique</term><term>Propriété électrique</term><term>Structure cristalline</term><term>Réseau rhomboédrique</term><term>Point Curie</term><term>Susceptibilité magnétique</term><term>Structure spin incliné</term><term>Addition néodyme</term><term>Addition indium</term><term>Ferromagnétique</term><term>Antiferromagnétisme</term><term>Interaction échange</term><term>Aimantation</term><term>Conductivité électrique</term><term>Réseau orthorhombique</term><term>Matériau ferromagnétique</term><term>Semiconductivité</term><term>Dépendance température</term><term>Méthode Rietveld</term><term>Système spin</term><term>6166</term><term>7550C</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The structural, magnetic and electrical properties of (La<sub>0.70-x</sub>Nd<sub>x</sub>)Sr<sub>0.30</sub>Mn<sub>0.70</sub>Cr<sub>0.30</sub>O<sub>3</sub> perovskite (0 ≤ x ≤ 0.30) prepared by the usual ceramic procedure were investigated. Structural Rietveld refinemen revealed that these compounds crystallize in a rhombohedral (R3c) perovskite structure when x = 0, 0.1 and 0.20, while for x 0.30 the structure becomes orthorhombic (Pbnm). It was found that the substitutio of La by Nd reduces the Curie temperature (T<sub>C</sub>). The FC, ZFC, M(H) and AC susceptibility measurement show typical canted-antiferromagnetism for the Nd-doped samples, in which a ferromagnetic compo nent coexists with predominant antiferromagnetic interactions. The values of the magnetization (M(H) decrease very slightly when increasing the Nd content, compared to the undoped sample (M<sub>s</sub> values a 5 T and 2 K are, respectively, 47.9, 47.3 and 47.5 emu/g for x=0.10, 0.20 and 0.30, compared to 48.2 emu/ for x=0), indicating that the Nd<sup>3+</sup> contribution is negligible compared to the total moment of the fer romagnetic (Mn/Cr) network. The resistivity increases by several orders of magnitude with Nd-dopin and the semi-conducting behaviour persists in the whole temperature range. The interaction betwee Mn<sup>4+</sup> -O-Cr<sup>3+</sup>and Cr<sup>3+</sup> -O-Cr<sup>3+</sup> is responsible for the semi-conducting state.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0925-8388</s0></fA01><fA03 i2="1"><s0>J. alloys compd.</s0></fA03><fA05><s2>486</s2></fA05><fA06><s2>1-2</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Structural, magnetic and electrical properties of (La<sub>0.70-x</sub>Nd<sub>x</sub>)Sr<sub>0.30</sub>Mn<sub>0.70</sub>Cr<sub>0.30</sub>O<sub>3</sub> with 0≤x≤0.30</s1></fA08><fA11 i1="01" i2="1"><s1>HAGAZA (Ahmed)</s1></fA11><fA11 i1="02" i2="1"><s1>KALLEL (Nabil)</s1></fA11><fA11 i1="03" i2="1"><s1>KALLEL (Sami)</s1></fA11><fA11 i1="04" i2="1"><s1>GUIZOUARN (Thierry)</s1></fA11><fA11 i1="05" i2="1"><s1>PENA (Octavio)</s1></fA11><fA11 i1="06" i2="1"><s1>OUMEZZINE (Mohamed)</s1></fA11><fA14 i1="01"><s1>Laboratoire de Physico-chimie des Matériaux, Département de Physique, Faculté des Sciences de Monastir, BP22</s1><s2>5019 Monastir</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></fA14><fA14 i1="02"><s1>Sciences Chimiques de Rennes, UMR 6226-CNRS. Université de Rennes 1</s1><s2>35042 Rennes</s2><s3>FRA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></fA14><fA20><s1>250-256</s1></fA20><fA21><s1>2009</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>1151</s2><s5>354000171408320590</s5></fA43><fA44><s0>0000</s0><s1>© 2010 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>41 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>10-0029919</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of alloys and compounds</s0></fA64><fA66 i1="01"><s0>CHE</s0></fA66><fC01 i1="01" l="ENG"><s0>The structural, magnetic and electrical properties of (La<sub>0.70-x</sub>Nd<sub>x</sub>)Sr<sub>0.30</sub>Mn<sub>0.70</sub>Cr<sub>0.30</sub>O<sub>3</sub> perovskite (0 ≤ x ≤ 0.30) prepared by the usual ceramic procedure were investigated. Structural Rietveld refinemen revealed that these compounds crystallize in a rhombohedral (R3c) perovskite structure when x = 0, 0.1 and 0.20, while for x 0.30 the structure becomes orthorhombic (Pbnm). It was found that the substitutio of La by Nd reduces the Curie temperature (T<sub>C</sub>). The FC, ZFC, M(H) and AC susceptibility measurement show typical canted-antiferromagnetism for the Nd-doped samples, in which a ferromagnetic compo nent coexists with predominant antiferromagnetic interactions. The values of the magnetization (M(H) decrease very slightly when increasing the Nd content, compared to the undoped sample (M<sub>s</sub> values a 5 T and 2 K are, respectively, 47.9, 47.3 and 47.5 emu/g for x=0.10, 0.20 and 0.30, compared to 48.2 emu/ for x=0), indicating that the Nd<sup>3+</sup> contribution is negligible compared to the total moment of the fer romagnetic (Mn/Cr) network. The resistivity increases by several orders of magnitude with Nd-dopin and the semi-conducting behaviour persists in the whole temperature range. The interaction betwee Mn<sup>4+</sup> -O-Cr<sup>3+</sup>and Cr<sup>3+</sup> -O-Cr<sup>3+</sup> is responsible for the semi-conducting state.</s0></fC01><fC02 i1="01" i2="3"><s0>001B60A66</s0></fC02><fC02 i1="02" i2="3"><s0>001B70E50C</s0></fC02><fC03 i1="01" i2="3" l="FRE"><s0>Propriété magnétique</s0><s5>01</s5></fC03><fC03 i1="01" i2="3" l="ENG"><s0>Magnetic properties</s0><s5>01</s5></fC03><fC03 i1="02" i2="3" l="FRE"><s0>Propriété électrique</s0><s5>02</s5></fC03><fC03 i1="02" i2="3" l="ENG"><s0>Electrical properties</s0><s5>02</s5></fC03><fC03 i1="03" i2="3" l="FRE"><s0>Structure cristalline</s0><s5>03</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Crystal structure</s0><s5>03</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Réseau rhomboédrique</s0><s5>04</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Trigonal lattices</s0><s5>04</s5></fC03><fC03 i1="05" i2="3" l="FRE"><s0>Point Curie</s0><s5>05</s5></fC03><fC03 i1="05" i2="3" l="ENG"><s0>Curie point</s0><s5>05</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Susceptibilité magnétique</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Magnetic susceptibility</s0><s5>06</s5></fC03><fC03 i1="07" i2="3" l="FRE"><s0>Structure spin incliné</s0><s5>07</s5></fC03><fC03 i1="07" i2="3" l="ENG"><s0>Canted spin arrangements</s0><s5>07</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Addition néodyme</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Neodymium additions</s0><s5>08</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Addition indium</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Indium additions</s0><s5>09</s5></fC03><fC03 i1="10" i2="X" l="FRE"><s0>Ferromagnétique</s0><s5>10</s5></fC03><fC03 i1="10" i2="X" l="ENG"><s0>Ferromagnetic materials</s0><s5>10</s5></fC03><fC03 i1="10" i2="X" l="SPA"><s0>Material ferromagnético</s0><s5>10</s5></fC03><fC03 i1="11" i2="3" l="FRE"><s0>Antiferromagnétisme</s0><s5>11</s5></fC03><fC03 i1="11" i2="3" l="ENG"><s0>Antiferromagnetism</s0><s5>11</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Interaction échange</s0><s5>12</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Exchange interactions</s0><s5>12</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Aimantation</s0><s5>13</s5></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Magnetization</s0><s5>13</s5></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Conductivité électrique</s0><s5>14</s5></fC03><fC03 i1="14" i2="3" l="ENG"><s0>Electrical conductivity</s0><s5>14</s5></fC03><fC03 i1="15" i2="3" l="FRE"><s0>Réseau orthorhombique</s0><s5>15</s5></fC03><fC03 i1="15" i2="3" l="ENG"><s0>Orthorhombic lattices</s0><s5>15</s5></fC03><fC03 i1="16" i2="3" l="FRE"><s0>Matériau ferromagnétique</s0><s5>16</s5></fC03><fC03 i1="16" i2="3" l="ENG"><s0>Ferromagnetic materials</s0><s5>16</s5></fC03><fC03 i1="17" i2="X" l="FRE"><s0>Semiconductivité</s0><s5>29</s5></fC03><fC03 i1="17" i2="X" l="ENG"><s0>Semiconductivity</s0><s5>29</s5></fC03><fC03 i1="17" i2="X" l="SPA"><s0>Semiconductividad</s0><s5>29</s5></fC03><fC03 i1="18" i2="3" l="FRE"><s0>Dépendance température</s0><s5>30</s5></fC03><fC03 i1="18" i2="3" l="ENG"><s0>Temperature dependence</s0><s5>30</s5></fC03><fC03 i1="19" i2="X" l="FRE"><s0>Méthode Rietveld</s0><s5>31</s5></fC03><fC03 i1="19" i2="X" l="ENG"><s0>Rietveld method</s0><s5>31</s5></fC03><fC03 i1="19" i2="X" l="SPA"><s0>Método Rietveld</s0><s5>31</s5></fC03><fC03 i1="20" i2="3" l="FRE"><s0>Système spin</s0><s5>32</s5></fC03><fC03 i1="20" i2="3" l="ENG"><s0>Spin systems</s0><s5>32</s5></fC03><fC03 i1="21" i2="3" l="FRE"><s0>6166</s0><s4>INC</s4><s5>71</s5></fC03><fC03 i1="22" i2="3" l="FRE"><s0>7550C</s0><s4>INC</s4><s5>72</s5></fC03><fN21><s1>018</s1></fN21><fN44 i1="01"><s1>OTO</s1></fN44><fN82><s1>OTO</s1></fN82></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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