CobaltMaghrebV1, Main, Exploration, bibRecord, 000871

Nuclear and magnetic structures and magnetic properties of the layered cobalt hydroxysulfate Co5(OH)6(SO4)2(H2O)4 and its deuterated analogue, Co5(OD)6(SO4)2(D2O)4

Identifieur interne : 000871 ( Main/Exploration ); précédent : 000870; suivant : 000872

Nuclear and magnetic structures and magnetic properties of the layered cobalt hydroxysulfate Co5(OH)6(SO4)2(H2O)4 and its deuterated analogue, Co5(OD)6(SO4)2(D2O)4

Auteurs : Mohsen Ben Salah [France] ; Serge Vilminot [France] ; Gilles Andre [France] ; Mireille Richard-Plouet [France] ; Tahar Mhiri [Tunisie] ; Seishi Takagi [Japon] ; Mohamedally Kurmoo [France]

Source :

Journal of the American Chemical Society [ 0002-7863 ] ; 2006.

RBID : Pascal:06-0477951

Descripteurs français

Pascal (Inist)
- Synthèse minérale, Cobalt Complexe, Complexe polynucléaire, Complexe aqua, Complexe hydroxo, Complexe sulfato, Structure stratifiée, Structure moléculaire, Structure cristalline, Propriété magnétique, Anisotropie magnétique, Susceptibilité magnétique, Magnétomètre SQUID, Diffraction RX, Deutérium Oxyde, 6166F.

English descriptors

KwdEn :
- Aqua complex, Cobalt Complexes, Crystalline structure, Hydroxo complex, Inorganic synthesis, Laminated structure, Magnetic anisotropy, Magnetic properties, Magnetic susceptibility, Molecular structure, Polynuclear complex, SQUID magnetometers, Sulfato complex, X ray diffraction.

Abstract

The structures (nuclear and magnetic), magnetic properties (2-300 K, 1-10⁴ bar), and heat capacity of the layered ferromagnet Co₅(OH)₆(SO₄)₂(H₂O)₄ are reported. The crystal structure consists of brucite-like M^II-OH layers of edge-sharing octahedra, but having two different Co sites, which are pillared by ...O₃SO-Co(H₂O)₄-OSO₃.... The absorption spectrum confirms the presence of divalent Co, and by comparison of the two isotopic materials, the assignment of the vibrational spectra is proposed. The magnetic properties are those of a ferromagnet with a Curie temperature of 14 K. Temperature and field dependence magnetization data taken on an aligned sample suggest an easy-plane magnet. The Curie temperature increases linearly with pressure at a rate of +0.12 K/kbar, suggesting small progressive and uniform modifications of the Co-Co exchange interactions. Rietveld refinement of the neutron powder diffraction data and consideration of a group analysis reveal the direction of the moments of the Co within the layer to be along the b-axis, with a maximum moment of 3.33 μ_B per cobalt. Those of the pillars remain random. Estimation of the entropy from the heat capacity data accounts for the presence of four ordered moments of Co with spin 1/2 at the long-range ordering temperature, while the moment of the pillaring Co contributes only at lower temperature due to the increase of the internal field as the temperature is lowered. The purely 2D-magnetic ordering in an easy-plane magnet, evidenced by neutron diffraction and heat capacity, challenges the existing theories and is a rare example of a single-layer magnet.

Affiliations:

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Le document en format XML

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(OH)<sub>6</sub>
(SO<sub>4</sub>
)<sub>2</sub>
(H<sub>2</sub>
O)<sub>4</sub>
 and its deuterated analogue, Co<sub>5</sub>
(OD)<sub>6</sub>
(SO<sub>4</sub>
)<sub>2</sub>
(D<sub>2</sub>
O)<sub>4</sub>
</title>
<author><name sortKey="Ben Salah, Mohsen" sort="Ben Salah, Mohsen" uniqKey="Ben Salah M" first="Mohsen" last="Ben Salah">Mohsen Ben Salah</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-ULP), 23 rue du Loess, BP 43</s1>
<s2>67034 Strasbourg</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
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<author><name sortKey="Vilminot, Serge" sort="Vilminot, Serge" uniqKey="Vilminot S" first="Serge" last="Vilminot">Serge Vilminot</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-ULP), 23 rue du Loess, BP 43</s1>
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<s3>FRA</s3>
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<author><name sortKey="Andre, Gilles" sort="Andre, Gilles" uniqKey="Andre G" first="Gilles" last="Andre">Gilles Andre</name>
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<author><name sortKey="Richard Plouet, Mireille" sort="Richard Plouet, Mireille" uniqKey="Richard Plouet M" first="Mireille" last="Richard-Plouet">Mireille Richard-Plouet</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Laboratoire de Chimie des Solides, 2 rue de la Houssinière, BP 32229</s1>
<s2>44322 Nantes</s2>
<s3>FRA</s3>
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<author><name sortKey="Mhiri, Tahar" sort="Mhiri, Tahar" uniqKey="Mhiri T" first="Tahar" last="Mhiri">Tahar Mhiri</name>
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<s2>3038 Sfax</s2>
<s3>TUN</s3>
<sZ>5 aut.</sZ>
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<country>Tunisie</country>
<wicri:noRegion>3038 Sfax</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Takagi, Seishi" sort="Takagi, Seishi" uniqKey="Takagi S" first="Seishi" last="Takagi">Seishi Takagi</name>
<affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Department of Physics, Kyushu Institute of Technology</s1>
<s2>Tobata-ku, Kitakyushu 804-8550</s2>
<s3>JPN</s3>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<wicri:noRegion>Tobata-ku, Kitakyushu 804-8550</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Kurmoo, Mohamedally" sort="Kurmoo, Mohamedally" uniqKey="Kurmoo M" first="Mohamedally" last="Kurmoo">Mohamedally Kurmoo</name>
<affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Laboratoire de Chimie de Coordination Organique, UMR 7140-CNRS, Université Louis Pasteur, 4 rue Blaise Pascal</s1>
<s2>67000 Strasbourg</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>France</country>
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<region type="old region" nuts="2">Alsace (région administrative)</region>
<settlement type="city">Strasbourg</settlement>
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<orgName type="university">Université Strasbourg 1</orgName>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Nuclear and magnetic structures and magnetic properties of the layered cobalt hydroxysulfate Co<sub>5</sub>
(OH)<sub>6</sub>
(SO<sub>4</sub>
)<sub>2</sub>
(H<sub>2</sub>
O)<sub>4</sub>
 and its deuterated analogue, Co<sub>5</sub>
(OD)<sub>6</sub>
(SO<sub>4</sub>
)<sub>2</sub>
(D<sub>2</sub>
O)<sub>4</sub>
</title>
<author><name sortKey="Ben Salah, Mohsen" sort="Ben Salah, Mohsen" uniqKey="Ben Salah M" first="Mohsen" last="Ben Salah">Mohsen Ben Salah</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-ULP), 23 rue du Loess, BP 43</s1>
<s2>67034 Strasbourg</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Alsace (région administrative)</region>
<settlement type="city">Strasbourg</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Vilminot, Serge" sort="Vilminot, Serge" uniqKey="Vilminot S" first="Serge" last="Vilminot">Serge Vilminot</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Groupe des Matériaux Inorganiques, IPCMS, UMR 7504 (CNRS-ULP), 23 rue du Loess, BP 43</s1>
<s2>67034 Strasbourg</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Alsace (région administrative)</region>
<settlement type="city">Strasbourg</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Andre, Gilles" sort="Andre, Gilles" uniqKey="Andre G" first="Gilles" last="Andre">Gilles Andre</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay</s1>
<s2>91191 Gif-sur-Yvette</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Île-de-France</region>
<settlement type="city">Gif-sur-Yvette</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Richard Plouet, Mireille" sort="Richard Plouet, Mireille" uniqKey="Richard Plouet M" first="Mireille" last="Richard-Plouet">Mireille Richard-Plouet</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut des Matériaux Jean Rouxel, UMR CNRS 6502, Laboratoire de Chimie des Solides, 2 rue de la Houssinière, BP 32229</s1>
<s2>44322 Nantes</s2>
<s3>FRA</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Pays de la Loire</region>
<settlement type="city">Nantes</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Mhiri, Tahar" sort="Mhiri, Tahar" uniqKey="Mhiri T" first="Tahar" last="Mhiri">Tahar Mhiri</name>
<affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Laboratoire de l'Etat Solide, Faculté des Sciences, Université de Sfax, Route de Sokra Km 4</s1>
<s2>3038 Sfax</s2>
<s3>TUN</s3>
<sZ>5 aut.</sZ>
</inist:fA14>
<country>Tunisie</country>
<wicri:noRegion>3038 Sfax</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Takagi, Seishi" sort="Takagi, Seishi" uniqKey="Takagi S" first="Seishi" last="Takagi">Seishi Takagi</name>
<affiliation wicri:level="1"><inist:fA14 i1="05"><s1>Department of Physics, Kyushu Institute of Technology</s1>
<s2>Tobata-ku, Kitakyushu 804-8550</s2>
<s3>JPN</s3>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<wicri:noRegion>Tobata-ku, Kitakyushu 804-8550</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Kurmoo, Mohamedally" sort="Kurmoo, Mohamedally" uniqKey="Kurmoo M" first="Mohamedally" last="Kurmoo">Mohamedally Kurmoo</name>
<affiliation wicri:level="4"><inist:fA14 i1="06"><s1>Laboratoire de Chimie de Coordination Organique, UMR 7140-CNRS, Université Louis Pasteur, 4 rue Blaise Pascal</s1>
<s2>67000 Strasbourg</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Grand Est</region>
<region type="old region" nuts="2">Alsace (région administrative)</region>
<settlement type="city">Strasbourg</settlement>
</placeName>
<orgName type="university">Université Strasbourg 1</orgName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Journal of the American Chemical Society</title>
<title level="j" type="abbreviated">J. Am. Chem. Soc.</title>
<idno type="ISSN">0002-7863</idno>
<imprint><date when="2006">2006</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Journal of the American Chemical Society</title>
<title level="j" type="abbreviated">J. Am. Chem. Soc.</title>
<idno type="ISSN">0002-7863</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aqua complex</term>
<term>Cobalt Complexes</term>
<term>Crystalline structure</term>
<term>Hydroxo complex</term>
<term>Inorganic synthesis</term>
<term>Laminated structure</term>
<term>Magnetic anisotropy</term>
<term>Magnetic properties</term>
<term>Magnetic susceptibility</term>
<term>Molecular structure</term>
<term>Polynuclear complex</term>
<term>SQUID magnetometers</term>
<term>Sulfato complex</term>
<term>X ray diffraction</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Synthèse minérale</term>
<term>Cobalt Complexe</term>
<term>Complexe polynucléaire</term>
<term>Complexe aqua</term>
<term>Complexe hydroxo</term>
<term>Complexe sulfato</term>
<term>Structure stratifiée</term>
<term>Structure moléculaire</term>
<term>Structure cristalline</term>
<term>Propriété magnétique</term>
<term>Anisotropie magnétique</term>
<term>Susceptibilité magnétique</term>
<term>Magnétomètre SQUID</term>
<term>Diffraction RX</term>
<term>Deutérium Oxyde</term>
<term>6166F</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">The structures (nuclear and magnetic), magnetic properties (2-300 K, 1-10<sup>4</sup>
 bar), and heat capacity of the layered ferromagnet Co<sub>5</sub>
(OH)<sub>6</sub>
(SO<sub>4</sub>
)<sub>2</sub>
(H<sub>2</sub>
O)<sub>4</sub>
 are reported. The crystal structure consists of brucite-like M<sup>II</sup>
-OH layers of edge-sharing octahedra, but having two different Co sites, which are pillared by ...O<sub>3</sub>
SO-Co(H<sub>2</sub>
O)<sub>4</sub>
-OSO<sub>3</sub>
.... The absorption spectrum confirms the presence of divalent Co, and by comparison of the two isotopic materials, the assignment of the vibrational spectra is proposed. The magnetic properties are those of a ferromagnet with a Curie temperature of 14 K. Temperature and field dependence magnetization data taken on an aligned sample suggest an easy-plane magnet. The Curie temperature increases linearly with pressure at a rate of +0.12 K/kbar, suggesting small progressive and uniform modifications of the Co-Co exchange interactions. Rietveld refinement of the neutron powder diffraction data and consideration of a group analysis reveal the direction of the moments of the Co within the layer to be along the b-axis, with a maximum moment of 3.33 μ<sub>B</sub>
 per cobalt. Those of the pillars remain random. Estimation of the entropy from the heat capacity data accounts for the presence of four ordered moments of Co with spin 1/2 at the long-range ordering temperature, while the moment of the pillaring Co contributes only at lower temperature due to the increase of the internal field as the temperature is lowered. The purely 2D-magnetic ordering in an easy-plane magnet, evidenced by neutron diffraction and heat capacity, challenges the existing theories and is a rare example of a single-layer magnet.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
<li>Japon</li>
<li>Tunisie</li>
</country>
<region><li>Alsace (région administrative)</li>
<li>Grand Est</li>
<li>Pays de la Loire</li>
<li>Île-de-France</li>
</region>
<settlement><li>Gif-sur-Yvette</li>
<li>Nantes</li>
<li>Strasbourg</li>
</settlement>
<orgName><li>Université Strasbourg 1</li>
</orgName>
</list>
<tree><country name="France"><region name="Grand Est"><name sortKey="Ben Salah, Mohsen" sort="Ben Salah, Mohsen" uniqKey="Ben Salah M" first="Mohsen" last="Ben Salah">Mohsen Ben Salah</name>
</region>
<name sortKey="Andre, Gilles" sort="Andre, Gilles" uniqKey="Andre G" first="Gilles" last="Andre">Gilles Andre</name>
<name sortKey="Kurmoo, Mohamedally" sort="Kurmoo, Mohamedally" uniqKey="Kurmoo M" first="Mohamedally" last="Kurmoo">Mohamedally Kurmoo</name>
<name sortKey="Richard Plouet, Mireille" sort="Richard Plouet, Mireille" uniqKey="Richard Plouet M" first="Mireille" last="Richard-Plouet">Mireille Richard-Plouet</name>
<name sortKey="Vilminot, Serge" sort="Vilminot, Serge" uniqKey="Vilminot S" first="Serge" last="Vilminot">Serge Vilminot</name>
</country>
<country name="Tunisie"><noRegion><name sortKey="Mhiri, Tahar" sort="Mhiri, Tahar" uniqKey="Mhiri T" first="Tahar" last="Mhiri">Tahar Mhiri</name>
</noRegion>
</country>
<country name="Japon"><noRegion><name sortKey="Takagi, Seishi" sort="Takagi, Seishi" uniqKey="Takagi S" first="Seishi" last="Takagi">Seishi Takagi</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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Nuclear and magnetic structures and magnetic properties of the layered cobalt hydroxysulfate Co5(OH)6(SO4)2(H2O)4 and its deuterated analogue, Co5(OD)6(SO4)2(D2O)4

Nuclear and magnetic structures and magnetic properties of the layered cobalt hydroxysulfate Co5(OH)6(SO4)2(H2O)4 and its deuterated analogue, Co5(OD)6(SO4)2(D2O)4

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri