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Synthesis, structure, magnetic susceptibility and Mössbauer and raman spectroscopies of the new oxyphosphate Fe0.50TiO(PO4)

Identifieur interne : 000263 ( PascalFrancis/Checkpoint ); précédent : 000262; suivant : 000264

Synthesis, structure, magnetic susceptibility and Mössbauer and raman spectroscopies of the new oxyphosphate Fe0.50TiO(PO4)

Auteurs : S. Benmokhtar [Maroc] ; A. El Jazouli [Maroc] ; J. P. Chaminade [France] ; P. Gravereau [France] ; A. Wattiaux [France] ; L. Fournes [France] ; J. C. Grenier [France] ; D. Waal [Afrique du Sud]

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RBID : Pascal:07-0287157

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English descriptors

Abstract

A new iron titanyl oxyphosphate Fe0.50TiO(PO4) was synthesized by both solid-state reaction and Cu2+-Fe2+ ion exchange method. The material was then characterized by X-ray diffraction, Mössbauer spectroscopy, magnetic susceptibility measurements and Raman spectroscopy. The crystal structure of the compound was refined, using X-ray powder diffraction data, by Rietveld profile method; it crytallizes in the monoclinic system, space group P21/c (No.14), with a = 7.4039(3)A, b = 7.3838(3)Å, c = 7.4083(3)Å, β = 120.36°(1), V = 349.44(2)Å3 and Z = 4. The volume of the title compound is comparable to those of the MoII0.50TiO(PO4) series, where MII = Mg, Co, Ni and Zn. The framework is built up from [TiO6] octahedra and [PO4] tetrahedra. [TiO6] octahedra are linked together by corners and form infinite chains along the c-axis. Ti atoms are displaced from the center of octahedral units showing an alternating short distance (1.73 A) and a long one (2.22 A). These chains are linked together by [PO4] tetrahedra. Fe2+ cations occupy a triangle-based antiprism sharing two faces with two [TiO6] octahedra. Mössbauer and magnetic measurements show the existence of iron only in divalent state, located exclusively in octahedral sites with high spin configuration (t42ge2g). Raman study confirms the existence of Ti-O-Ti chains.


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Pascal:07-0287157

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<sub>4</sub>
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<term>Actinides</term>
<term>Crystal structure</term>
<term>Crystallographic site</term>
<term>High spin states</term>
<term>Ion exchange</term>
<term>Iron</term>
<term>Long chain</term>
<term>Magnetic measurement</term>
<term>Magnetic structure</term>
<term>Magnetic susceptibility</term>
<term>Moessbauer effect</term>
<term>Moessbauer spectroscopy</term>
<term>Monoclinic lattices</term>
<term>Nickel</term>
<term>Raman spectra</term>
<term>Raman spectroscopy</term>
<term>Rietveld method</term>
<term>Solid state reaction</term>
<term>Space groups</term>
<term>Ternary alloys</term>
<term>Titanium</term>
<term>Transition elements</term>
<term>X-ray spectra</term>
<term>XRD</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Structure magnétique</term>
<term>Susceptibilité magnétique</term>
<term>Effet Mössbauer</term>
<term>Spectrométrie Raman</term>
<term>Spectre Raman</term>
<term>Actinide</term>
<term>Fer</term>
<term>Réaction état solide</term>
<term>Echange ion</term>
<term>Diffraction RX</term>
<term>Spectre RX</term>
<term>Spectrométrie Mössbauer</term>
<term>Mesure magnétique</term>
<term>Structure cristalline</term>
<term>Nickel</term>
<term>Titane</term>
<term>Réseau monoclinique</term>
<term>Groupe espace</term>
<term>Alliage ternaire</term>
<term>Chaîne longue</term>
<term>Site cristallographique</term>
<term>Etat spin élevé</term>
<term>Métal transition</term>
<term>7525</term>
<term>75</term>
<term>7680</term>
<term>78</term>
<term>Méthode Rietveld</term>
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<div type="abstract" xml:lang="en">A new iron titanyl oxyphosphate Fe
<sub>0.50</sub>
TiO(PO
<sub>4</sub>
) was synthesized by both solid-state reaction and Cu
<sup>2+</sup>
-Fe
<sup>2+</sup>
ion exchange method. The material was then characterized by X-ray diffraction, Mössbauer spectroscopy, magnetic susceptibility measurements and Raman spectroscopy. The crystal structure of the compound was refined, using X-ray powder diffraction data, by Rietveld profile method; it crytallizes in the monoclinic system, space group P2
<sub>1</sub>
/c (No.14), with a = 7.4039(3)A, b = 7.3838(3)Å, c = 7.4083(3)Å, β = 120.36°(1), V = 349.44(2)Å
<sup>3</sup>
and Z = 4. The volume of the title compound is comparable to those of the Mo
<sup>II</sup>
<sub>0.50</sub>
TiO(PO
<sub>4</sub>
) series, where M
<sup>II</sup>
= Mg, Co, Ni and Zn. The framework is built up from [TiO
<sub>6</sub>
] octahedra and [PO
<sub>4</sub>
] tetrahedra. [TiO
<sub>6</sub>
] octahedra are linked together by corners and form infinite chains along the c-axis. Ti atoms are displaced from the center of octahedral units showing an alternating short distance (1.73 A) and a long one (2.22 A). These chains are linked together by [PO
<sub>4</sub>
] tetrahedra. Fe
<sup>2+</sup>
cations occupy a triangle-based antiprism sharing two faces with two [TiO
<sub>6</sub>
] octahedra. Mössbauer and magnetic measurements show the existence of iron only in divalent state, located exclusively in octahedral sites with high spin configuration (t
<sup>4</sup>
<sub>2g</sub>
e
<sup>2</sup>
<sub>g</sub>
). Raman study confirms the existence of Ti-O-Ti chains.</div>
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<fA44>
<s0>0000</s0>
<s1>© 2007 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>41 ref.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>07-0287157</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>Journal of solid state chemistry : (Print)</s0>
</fA64>
<fA66 i1="01">
<s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>A new iron titanyl oxyphosphate Fe
<sub>0.50</sub>
TiO(PO
<sub>4</sub>
) was synthesized by both solid-state reaction and Cu
<sup>2+</sup>
-Fe
<sup>2+</sup>
ion exchange method. The material was then characterized by X-ray diffraction, Mössbauer spectroscopy, magnetic susceptibility measurements and Raman spectroscopy. The crystal structure of the compound was refined, using X-ray powder diffraction data, by Rietveld profile method; it crytallizes in the monoclinic system, space group P2
<sub>1</sub>
/c (No.14), with a = 7.4039(3)A, b = 7.3838(3)Å, c = 7.4083(3)Å, β = 120.36°(1), V = 349.44(2)Å
<sup>3</sup>
and Z = 4. The volume of the title compound is comparable to those of the Mo
<sup>II</sup>
<sub>0.50</sub>
TiO(PO
<sub>4</sub>
) series, where M
<sup>II</sup>
= Mg, Co, Ni and Zn. The framework is built up from [TiO
<sub>6</sub>
] octahedra and [PO
<sub>4</sub>
] tetrahedra. [TiO
<sub>6</sub>
] octahedra are linked together by corners and form infinite chains along the c-axis. Ti atoms are displaced from the center of octahedral units showing an alternating short distance (1.73 A) and a long one (2.22 A). These chains are linked together by [PO
<sub>4</sub>
] tetrahedra. Fe
<sup>2+</sup>
cations occupy a triangle-based antiprism sharing two faces with two [TiO
<sub>6</sub>
] octahedra. Mössbauer and magnetic measurements show the existence of iron only in divalent state, located exclusively in octahedral sites with high spin configuration (t
<sup>4</sup>
<sub>2g</sub>
e
<sup>2</sup>
<sub>g</sub>
). Raman study confirms the existence of Ti-O-Ti chains.</s0>
</fC01>
<fC02 i1="01" i2="3">
<s0>001B60A66</s0>
</fC02>
<fC02 i1="02" i2="3">
<s0>001B70E25</s0>
</fC02>
<fC02 i1="03" i2="3">
<s0>001B70F80</s0>
</fC02>
<fC02 i1="04" i2="3">
<s0>001B70H</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE">
<s0>Structure magnétique</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG">
<s0>Magnetic structure</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE">
<s0>Susceptibilité magnétique</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG">
<s0>Magnetic susceptibility</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE">
<s0>Effet Mössbauer</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG">
<s0>Moessbauer effect</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE">
<s0>Spectrométrie Raman</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG">
<s0>Raman spectroscopy</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE">
<s0>Spectre Raman</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG">
<s0>Raman spectra</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE">
<s0>Actinide</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG">
<s0>Actinides</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE">
<s0>Fer</s0>
<s2>NC</s2>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG">
<s0>Iron</s0>
<s2>NC</s2>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE">
<s0>Réaction état solide</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG">
<s0>Solid state reaction</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA">
<s0>Reacción estado sólido</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE">
<s0>Echange ion</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG">
<s0>Ion exchange</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE">
<s0>Diffraction RX</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG">
<s0>XRD</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE">
<s0>Spectre RX</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG">
<s0>X-ray spectra</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE">
<s0>Spectrométrie Mössbauer</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG">
<s0>Moessbauer spectroscopy</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE">
<s0>Mesure magnétique</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG">
<s0>Magnetic measurement</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA">
<s0>Medida magnética</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE">
<s0>Structure cristalline</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="3" l="ENG">
<s0>Crystal structure</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE">
<s0>Nickel</s0>
<s2>NC</s2>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG">
<s0>Nickel</s0>
<s2>NC</s2>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE">
<s0>Titane</s0>
<s2>NC</s2>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="3" l="ENG">
<s0>Titanium</s0>
<s2>NC</s2>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE">
<s0>Réseau monoclinique</s0>
<s5>29</s5>
</fC03>
<fC03 i1="17" i2="3" l="ENG">
<s0>Monoclinic lattices</s0>
<s5>29</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE">
<s0>Groupe espace</s0>
<s5>30</s5>
</fC03>
<fC03 i1="18" i2="3" l="ENG">
<s0>Space groups</s0>
<s5>30</s5>
</fC03>
<fC03 i1="19" i2="3" l="FRE">
<s0>Alliage ternaire</s0>
<s5>31</s5>
</fC03>
<fC03 i1="19" i2="3" l="ENG">
<s0>Ternary alloys</s0>
<s5>31</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE">
<s0>Chaîne longue</s0>
<s5>32</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG">
<s0>Long chain</s0>
<s5>32</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA">
<s0>Cadena larga</s0>
<s5>32</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE">
<s0>Site cristallographique</s0>
<s5>33</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG">
<s0>Crystallographic site</s0>
<s5>33</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA">
<s0>Sitio cristalográfico</s0>
<s5>33</s5>
</fC03>
<fC03 i1="22" i2="3" l="FRE">
<s0>Etat spin élevé</s0>
<s5>34</s5>
</fC03>
<fC03 i1="22" i2="3" l="ENG">
<s0>High spin states</s0>
<s5>34</s5>
</fC03>
<fC03 i1="23" i2="3" l="FRE">
<s0>Métal transition</s0>
<s5>35</s5>
</fC03>
<fC03 i1="23" i2="3" l="ENG">
<s0>Transition elements</s0>
<s5>35</s5>
</fC03>
<fC03 i1="24" i2="3" l="FRE">
<s0>7525</s0>
<s4>INC</s4>
<s5>71</s5>
</fC03>
<fC03 i1="25" i2="3" l="FRE">
<s0>75</s0>
<s4>INC</s4>
<s5>72</s5>
</fC03>
<fC03 i1="26" i2="3" l="FRE">
<s0>7680</s0>
<s4>INC</s4>
<s5>73</s5>
</fC03>
<fC03 i1="27" i2="3" l="FRE">
<s0>78</s0>
<s4>INC</s4>
<s5>74</s5>
</fC03>
<fC03 i1="28" i2="3" l="FRE">
<s0>Méthode Rietveld</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fC03 i1="28" i2="3" l="ENG">
<s0>Rietveld method</s0>
<s4>CD</s4>
<s5>96</s5>
</fC03>
<fN21>
<s1>190</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
<affiliations>
<list>
<country>
<li>Afrique du Sud</li>
<li>France</li>
<li>Maroc</li>
</country>
<region>
<li>Aquitaine</li>
<li>Nouvelle-Aquitaine</li>
</region>
<settlement>
<li>Pessac</li>
</settlement>
</list>
<tree>
<country name="Maroc">
<noRegion>
<name sortKey="Benmokhtar, S" sort="Benmokhtar, S" uniqKey="Benmokhtar S" first="S." last="Benmokhtar">S. Benmokhtar</name>
</noRegion>
<name sortKey="El Jazouli, A" sort="El Jazouli, A" uniqKey="El Jazouli A" first="A." last="El Jazouli">A. El Jazouli</name>
</country>
<country name="France">
<region name="Nouvelle-Aquitaine">
<name sortKey="Chaminade, J P" sort="Chaminade, J P" uniqKey="Chaminade J" first="J. P." last="Chaminade">J. P. Chaminade</name>
</region>
<name sortKey="Fournes, L" sort="Fournes, L" uniqKey="Fournes L" first="L." last="Fournes">L. Fournes</name>
<name sortKey="Gravereau, P" sort="Gravereau, P" uniqKey="Gravereau P" first="P." last="Gravereau">P. Gravereau</name>
<name sortKey="Grenier, J C" sort="Grenier, J C" uniqKey="Grenier J" first="J. C." last="Grenier">J. C. Grenier</name>
<name sortKey="Wattiaux, A" sort="Wattiaux, A" uniqKey="Wattiaux A" first="A." last="Wattiaux">A. Wattiaux</name>
</country>
<country name="Afrique du Sud">
<noRegion>
<name sortKey="Waal, D" sort="Waal, D" uniqKey="Waal D" first="D." last="Waal">D. Waal</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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