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Magnetic Properties of the RbMnPO4 Zeolite-ABW-Type Material: A Frustrated Zigzag Spin Chain.

hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorNÉNERT, Gwilherm
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorBETTIS, Jerry
hal.structure.identifierMax-Planck-Institut für Festkörperforschung
dc.contributor.authorKREMER, Reinhard
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorBEN YAHIA, Hamdi
hal.structure.identifierInstitut Laue-Langevin [ILL]
dc.contributor.authorRITTER, Clemens
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGAUDIN, Etienne
hal.structure.identifierMatériaux, Rayonnements, Structure [NEEL - MRS]
dc.contributor.authorISNARD, Olivier
hal.structure.identifierDepartment of Chemistry
dc.contributor.authorWHANGBO, Myung-Hwan
dc.date.issued2013-08-19
dc.identifier.issn0020-1669
dc.description.abstractEnThe crystal structure and magnetic properties of the RbMnPO4 zeolite-ABW-type material have been studied by temperature-dependent neutron powder diffraction, low-temperature magnetometry, and heat capacity measurements. RbMnPO4 represents a rare example of a weak ferromagnetic polar material, containing Mn(2+) ions with TN = 4.7 K. The neutron powder diffraction pattern recorded at T = 10 K shows that the compound crystallizes in the chiral and polar monoclinic space group P21 (No. 4) with the unit cell parameters: a = 8.94635(9), b = 5.43415(5), and c = 9.10250(8) Å and β = 90.4209(6)°. A close inspection of the crystal structure of RbMnPO4 shows that this material presents two different types of zigzag chains running along the b axis. This is a unique feature among the zeolite-ABW-type materials exhibiting the P21 symmetry. At low temperature, RbMnPO4 exhibits a canted antiferromagnetic structure characterized by the propagation vector k1 = 0, resulting in the magnetic symmetry P21'. The magnetic moments lie mostly along the b axis with the ferromagnetic component being in the ac plane. Due to the geometrical frustration present in this system, an intermediate phase appears within the temperature range 4.7-5.1 K characterized by the propagation vector k2 = (kx, 0, kz) with kx/kz ≈ 2. This ratio is reminiscent of the multiferroic phase of the orthorhombic RMnO3 phases (R = rare earth), suggesting that RbMnPO4 could present some multiferroic properties at low temperature. Our density functional calculations confirm the presence of magnetic frustration, which explains this intermediate incommensurate phase. Taking into account the strongest magnetic interactions, we are able to reproduce the magnetic structure observed experimentally at low temperature.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enCrystal structure
dc.subject.enMagnetic properties
dc.subject.enInorganic compounds
dc.title.enMagnetic Properties of the RbMnPO4 Zeolite-ABW-Type Material: A Frustrated Zigzag Spin Chain.
dc.typeArticle de revue
dc.identifier.doi10.1021/ic401408f
dc.subject.halChimie/Matériaux
dc.identifier.arxiv1410.0344
bordeaux.journalInorganic Chemistry
bordeaux.page9627-9635
bordeaux.volume52
bordeaux.issue16
bordeaux.peerReviewedoui
hal.identifierhal-00870649
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00870649v1
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