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Novel Mixed Cobalt/Chromium Phosphate NaCoCr2(PO4)3 Showing Spin-Flop Transition.
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | SOUIWA, Khalifa | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHENNABASAPPA, Madhu | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DECOURT, Rodolphe | |
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | BEN AMARA, Mongi | |
| hal.structure.identifier | Matériaux Inorganiques | |
| dc.contributor.author | HIDOURI, Mourad | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | TOULEMONDE, Olivier | |
| dc.date.issued | 2015 | |
| dc.identifier.issn | 0020-1669 | |
| dc.description.abstractEn | We describe the synthesis and the crystallographic and magnetic properties of a novel NaCoCr2(PO4)3 phosphate. A conventional solid-state reaction was used to obtain single-phase powders. A Rietveld analysis of powder X-ray diffraction data proposes an orthorhombic symmetry similar to α-CrPO4-type structure in space group Imma with the following unit cell parameters: a = 10.413(1) Å; b = 13.027(1) Å; c = 6.372(1) Å. The framework consists of PO4 tetrahedra, M(1)O6 (M(1) = Cr) octahedra, and M(2)2O10 (M(2) = 0.5Cr+0.5Co) binuclear unit of edge-sharing MO6 octahedra. It can be described in terms of two building blocks: sheets consisting of corner-sharing M(2)2O10 units with PO4 tetrahedra found parallel to the (b,c) plane, and chains made by corner-sharing CrO6 octahedra and PO4 tetrahedra running along the b axis. From the interconnection of the sheets and chains, a 3D rigid skeleton is formed, exhibiting two kinds of intersecting tunnel channels containing the Na(+) ions. The proposed structure derives from the α-CrPO4-type structure considering a positive charge balance according to the equation Cr(3+) → Co(2+) + Na(+), resulting in sodium countercation introduction within the unoccupied channels shown in the α-CrPO4 framework. Temperature-dependent DC and AC magnetic susceptibility is indicative of a long-range magnetic ordering occurring at 32 K. Further, spin-flop transition sheds light on a chromium-based phosphate for the first time. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Novel Mixed Cobalt/Chromium Phosphate NaCoCr2(PO4)3 Showing Spin-Flop Transition. | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/acs.inorgchem.5b00776 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Inorganic Chemistry | |
| bordeaux.page | 7345-7352 | |
| bordeaux.volume | 54 | |
| bordeaux.issue | 15 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01188867 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01188867v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Inorganic%20Chemistry&rft.date=2015&rft.volume=54&rft.issue=15&rft.spage=7345-7352&rft.epage=7345-7352&rft.eissn=0020-1669&rft.issn=0020-1669&rft.au=SOUIWA,%20Khalifa&CHENNABASAPPA,%20Madhu&DECOURT,%20Rodolphe&BEN%20AMARA,%20Mongi&HIDOURI,%20Mourad&rft.genre=article |
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