Structural characterization and magnetic properties of divanadates ZnMV2O7 (M = Co, Ni and Cu)
Identifieur interne : 000178 ( PascalFrancis/Checkpoint ); précédent : 000177; suivant : 000179Structural characterization and magnetic properties of divanadates ZnMV2O7 (M = Co, Ni and Cu)
Auteurs : A. Ait Salah [Maroc] ; K. Benkhouja [Maroc] ; K. Jaafari [Maroc] ; J. Romero De Paz [Espagne] ; E. Climent [Espagne] ; R. Saez Puche [Espagne]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2005.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Divanadates of general formula ZnMV2O7 (M = Co, Ni and Cu) have been prepared as powdered samples and the X-ray structural determination and magnetic studies have been carried out. Both ZnCoV2O7and ZnNiV2O7 crystallize with the so-called dichromate structure type, showing monoclinic symmetry, space group P21/c, while the third member of this family of vanadates ZnCuV2O7 shows the thortveitite structure type with monoclinic symmetry, space group C2/c. Magnetic susceptibility and specific heat measurements reveal that these derivatives behave as antiferromagnets and the estimated Néel temperatures are 4.5, 3.5 and 5.3 K for cobalt, nickel and copper vanadates, respectively. In all cases, the one-dimensional magnetic behavior that present the M2V2O7 vanadates is broken down when the magnetic cation M is half replaced by the diamagnetic Zn2+ to give the ZnMV2O7 samples studied in the present work.
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O<sub>7</sub>
(M = Co, Ni and Cu)</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Structural characterization and magnetic properties of divanadates ZnMV<sub>2</sub>
O<sub>7</sub>
(M = Co, Ni and Cu)</title>
<author><name sortKey="Ait Salah, A" sort="Ait Salah, A" uniqKey="Ait Salah A" first="A." last="Ait Salah">A. Ait Salah</name>
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<s2>El Jadida</s2>
<s3>MAR</s3>
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<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>L.C.M.M., Chemistry Department, Faculty of Sciences, Chouaib Doukkali University, P.O. Box 4065</s1>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antiferromagnetic materials</term>
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<term>Magnetic properties</term>
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<term>Specific heat</term>
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<term>Structure cristalline</term>
<term>Susceptibilité magnétique</term>
<term>Chaleur massique</term>
<term>Point Néel</term>
<term>Synthèse chimique</term>
<term>Diffraction RX</term>
<term>Réseau monoclinique</term>
<term>Vanadate</term>
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<front><div type="abstract" xml:lang="en">Divanadates of general formula ZnMV<sub>2</sub>
O<sub>7</sub>
(M = Co, Ni and Cu) have been prepared as powdered samples and the X-ray structural determination and magnetic studies have been carried out. Both ZnCoV<sub>2</sub>
O<sub>7</sub>
and ZnNiV<sub>2</sub>
O<sub>7</sub>
crystallize with the so-called dichromate structure type, showing monoclinic symmetry, space group P2<sub>1</sub>
/c, while the third member of this family of vanadates ZnCuV<sub>2</sub>
O<sub>7</sub>
shows the thortveitite structure type with monoclinic symmetry, space group C2/c. Magnetic susceptibility and specific heat measurements reveal that these derivatives behave as antiferromagnets and the estimated Néel temperatures are 4.5, 3.5 and 5.3 K for cobalt, nickel and copper vanadates, respectively. In all cases, the one-dimensional magnetic behavior that present the M<sub>2</sub>
V<sub>2</sub>
O<sub>7</sub>
vanadates is broken down when the magnetic cation M is half replaced by the diamagnetic Zn<sup>2+</sup>
to give the ZnMV<sub>2</sub>
O<sub>7</sub>
samples studied in the present work.</div>
</front>
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<fA08 i1="01" i2="1" l="ENG"><s1>Structural characterization and magnetic properties of divanadates ZnMV<sub>2</sub>
O<sub>7</sub>
(M = Co, Ni and Cu)</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>AIT SALAH (A.)</s1>
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<fA11 i1="02" i2="1"><s1>BENKHOUJA (K.)</s1>
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<fA11 i1="03" i2="1"><s1>JAAFARI (K.)</s1>
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<fA11 i1="04" i2="1"><s1>ROMERO DE PAZ (J.)</s1>
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<fA11 i1="05" i2="1"><s1>CLIMENT (E.)</s1>
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<fA11 i1="06" i2="1"><s1>SAEZ PUCHE (R.)</s1>
</fA11>
<fA14 i1="01"><s1>L.C.M.M., Chemistry Department, Faculty of Sciences, Chouaib Doukkali University, P.O. Box 4065</s1>
<s2>El Jadida</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
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<fA14 i1="02"><s1>Departamemo de Química Inorgánica I, Facultad de Ciencias Quimicas, Vniversidad Complulense de Madrid, Ciudad Universitaria s/n</s1>
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<fC01 i1="01" l="ENG"><s0>Divanadates of general formula ZnMV<sub>2</sub>
O<sub>7</sub>
(M = Co, Ni and Cu) have been prepared as powdered samples and the X-ray structural determination and magnetic studies have been carried out. Both ZnCoV<sub>2</sub>
O<sub>7</sub>
and ZnNiV<sub>2</sub>
O<sub>7</sub>
crystallize with the so-called dichromate structure type, showing monoclinic symmetry, space group P2<sub>1</sub>
/c, while the third member of this family of vanadates ZnCuV<sub>2</sub>
O<sub>7</sub>
shows the thortveitite structure type with monoclinic symmetry, space group C2/c. Magnetic susceptibility and specific heat measurements reveal that these derivatives behave as antiferromagnets and the estimated Néel temperatures are 4.5, 3.5 and 5.3 K for cobalt, nickel and copper vanadates, respectively. In all cases, the one-dimensional magnetic behavior that present the M<sub>2</sub>
V<sub>2</sub>
O<sub>7</sub>
vanadates is broken down when the magnetic cation M is half replaced by the diamagnetic Zn<sup>2+</sup>
to give the ZnMV<sub>2</sub>
O<sub>7</sub>
samples studied in the present work.</s0>
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<s2>NA</s2>
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<s5>20</s5>
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<s5>20</s5>
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<fC03 i1="11" i2="3" l="FRE"><s0>7550E</s0>
<s4>INC</s4>
<s5>60</s5>
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