Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12
Identifieur interne : 001E20 ( Main/Repository ); précédent : 001E19; suivant : 001E21Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba3Cu3In4O12 and Ba3Cu3Sc4O12
Auteurs : RBID : Pascal:12-0324681Descripteurs français
- Pascal (Inist)
- Ferromagnétisme, Aimantation, Interaction échange, Susceptibilité magnétique, Chaleur massique, Antiferromagnétisme, Diagramme phase magnétique, Champ critique, Echelle spin, Modèle magnétique, Baryum Cuivre Indium Oxyde Mixte, Baryum Cuivre Scandium Oxyde Mixte, Polycristal, Perovskites, Scandate, Indate.
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Abstract
The magnetic properties of polycrystalline samples of Ba3Cu3In4O12 (In-334) and Ba3Cu3Sc4O12 (Sc-334) are reported. Both 334 phases have a structure derived from perovskite, with CuO4 squares interconnected to form half-twist ladders along the c-axis. The Cu-O-Cu angles, ∼90°, and the positive Weiss temperatures indicate the presence of significant ferromagnetic (FM) interactions along the Cu ladders. At low temperatures, T < 20 K, sharp transitions in the magnetic susceptibility and heat capacity measurements indicate three-dimensional (3D) antiferromagnetic (AFM) ordering at TN. TN is suppressed on application of a field and a complex magnetic phase diagram with three distinct magnetic regimes below the upper critical field can be inferred from our measurements. The magnetic interactions are discussed in relation to a modified spin-1 /2 FM-AFM model and the 334 half-twist ladder is compared to other two-rung ladder spin-1/2 systems.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba<sub>3</sub>Cu<sub>3</sub>In<sub>4</sub>O<sub>12</sub> and Ba<sub>3</sub>Cu<sub>3</sub>Sc<sub>4</sub>O<sub>12</sub></title><author><name sortKey="Dutton, S E" uniqKey="Dutton S">S. E. Dutton</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, Princeton University</s1><s2>Princeton, NJ 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Kumar, M" uniqKey="Kumar M">M. Kumar</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, Princeton University</s1><s2>Princeton, NJ 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Soos, Z G" uniqKey="Soos Z">Z. G. Soos</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, Princeton University</s1><s2>Princeton, NJ 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author><author><name sortKey="Broholm, C L" uniqKey="Broholm C">C. L. Broholm</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute for Quantum Matter and Department of Physics and Astronomy, The Johns Hopkins University</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Baltimore, MD 21218</wicri:noRegion></affiliation></author><author><name sortKey="Cava, R J" uniqKey="Cava R">R. J. Cava</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, Princeton University</s1><s2>Princeton, NJ 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><settlement type="city">Princeton (New Jersey)</settlement><region type="state">New Jersey</region></placeName><orgName type="university">Université de Princeton</orgName></affiliation></author></titleStmt><publicationStmt><idno type="inist">12-0324681</idno><date when="2012">2012</date><idno type="stanalyst">PASCAL 12-0324681 INIST</idno><idno type="RBID">Pascal:12-0324681</idno><idno type="wicri:Area/Main/Corpus">001997</idno><idno type="wicri:Area/Main/Repository">001E20</idno></publicationStmt><seriesStmt><idno type="ISSN">0953-8984</idno><title level="j" type="abbreviated">J. phys., Condens. matter : (Print)</title><title level="j" type="main">Journal of physics. Condensed matter : (Print)</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiferromagnetism</term><term>Barium Copper Indium Oxides Mixed</term><term>Barium Copper Scandium Oxides Mixed</term><term>Critical field</term><term>Exchange interactions</term><term>Ferromagnetism</term><term>Magnetic model</term><term>Magnetic susceptibility</term><term>Magnetic-phase diagrams</term><term>Magnetization</term><term>Perovskites</term><term>Polycrystals</term><term>Scandates</term><term>Specific heat</term><term>Spin ladder</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Ferromagnétisme</term><term>Aimantation</term><term>Interaction échange</term><term>Susceptibilité magnétique</term><term>Chaleur massique</term><term>Antiferromagnétisme</term><term>Diagramme phase magnétique</term><term>Champ critique</term><term>Echelle spin</term><term>Modèle magnétique</term><term>Baryum Cuivre Indium Oxyde Mixte</term><term>Baryum Cuivre Scandium Oxyde Mixte</term><term>Polycristal</term><term>Perovskites</term><term>Scandate</term><term>Indate</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The magnetic properties of polycrystalline samples of Ba<sub>3</sub>Cu<sub>3</sub>In<sub>4</sub>O<sub>12</sub> (In-334) and Ba<sub>3</sub>Cu<sub>3</sub>Sc<sub>4</sub>O<sub>12</sub> (Sc-334) are reported. Both 334 phases have a structure derived from perovskite, with CuO<sub>4</sub> squares interconnected to form half-twist ladders along the c-axis. The Cu-O-Cu angles, ∼90°, and the positive Weiss temperatures indicate the presence of significant ferromagnetic (FM) interactions along the Cu ladders. At low temperatures, T < 20 K, sharp transitions in the magnetic susceptibility and heat capacity measurements indicate three-dimensional (3D) antiferromagnetic (AFM) ordering at T<sub>N</sub>. T<sub>N</sub> is suppressed on application of a field and a complex magnetic phase diagram with three distinct magnetic regimes below the upper critical field can be inferred from our measurements. The magnetic interactions are discussed in relation to a modified spin-1 /2 FM-AFM model and the 334 half-twist ladder is compared to other two-rung ladder spin-1/2 systems.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0953-8984</s0></fA01><fA02 i1="01"><s0>JCOMEL</s0></fA02><fA03 i2="1"><s0>J. phys., Condens. matter : (Print)</s0></fA03><fA05><s2>24</s2></fA05><fA06><s2>16</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Dominant ferromagnetism in the spin-1/2 half-twist ladder 334 compounds, Ba<sub>3</sub>Cu<sub>3</sub>In<sub>4</sub>O<sub>12</sub> and Ba<sub>3</sub>Cu<sub>3</sub>Sc<sub>4</sub>O<sub>12</sub></s1></fA08><fA11 i1="01" i2="1"><s1>DUTTON (S. E.)</s1></fA11><fA11 i1="02" i2="1"><s1>KUMAR (M.)</s1></fA11><fA11 i1="03" i2="1"><s1>SOOS (Z. G.)</s1></fA11><fA11 i1="04" i2="1"><s1>BROHOLM (C. L.)</s1></fA11><fA11 i1="05" i2="1"><s1>CAVA (R. J.)</s1></fA11><fA14 i1="01"><s1>Department of Chemistry, Princeton University</s1><s2>Princeton, NJ 08544</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="02"><s1>Institute for Quantum Matter and Department of Physics and Astronomy, The Johns Hopkins University</s1><s2>Baltimore, MD 21218</s2><s3>USA</s3><sZ>4 aut.</sZ></fA14><fA20><s2>166001.1-166001.8</s2></fA20><fA21><s1>2012</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>577E2</s2><s5>354000509853740250</s5></fA43><fA44><s0>0000</s0><s1>© 2012 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>33 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>12-0324681</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of physics. Condensed matter : (Print)</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>The magnetic properties of polycrystalline samples of Ba<sub>3</sub>Cu<sub>3</sub>In<sub>4</sub>O<sub>12</sub> (In-334) and Ba<sub>3</sub>Cu<sub>3</sub>Sc<sub>4</sub>O<sub>12</sub> (Sc-334) are reported. Both 334 phases have a structure derived from perovskite, with CuO<sub>4</sub> squares interconnected to form half-twist ladders along the c-axis. The Cu-O-Cu angles, ∼90°, and the positive Weiss temperatures indicate the presence of significant ferromagnetic (FM) interactions along the Cu ladders. At low temperatures, T < 20 K, sharp transitions in the magnetic susceptibility and heat capacity measurements indicate three-dimensional (3D) antiferromagnetic (AFM) ordering at T<sub>N</sub>. T<sub>N</sub> is suppressed on application of a field and a complex magnetic phase diagram with three distinct magnetic regimes below the upper critical field can be inferred from our measurements. 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