Magnetic structure and properties of NaFePO4 polymorphs: antiferromagnetic ordering and spin-flop transition

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dc.contributor.authorBarpanda, Pen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorLing, CDen_AU
dc.date.accessioned2021-08-02T03:39:06Zen_AU
dc.date.available2021-08-02T03:39:06Zen_AU
dc.date.issued2014-10-09en_AU
dc.date.statistics2021-07-24en_AU
dc.descriptionECS Meeting Abstracts contain extended abstracts of the technical papers presented at ECS meetings and ECS-sponsored meetings. This publication offers a first look into the current research in the field. ECS Meeting Abstracts are freely available to all visitors to the ECS Digital Library.en_AU
dc.description.abstractIn recent years, the cost and sustainability concerns have renewed research efforts on sodium-ion batteries, propelling investigation on various layered oxides and polyanionic family of insertion compounds for low-cost and large-scale cathode applications. These cathode insertion compounds are functional materials, involving redox active 3d transition metals (e.g. Fe/Co/Ni) that are often magnetic in nature. During the Na (de)insertion process involving redox reaction of transition metals and structural alteration, the magnetic magnetic structure/ properties can vary significantly. We have investigated the magnetic structure and properties of NaFePO4 polyanionic system, which exists in two distinct polymorphs: metastable triphylite and stable maricite. The details of these structures are shown in the figure. Both these polymoprhs undergo antiferromagnetic ordering below 50 K (for triphylite) and 13 K (for maricite). Using the magnetic susceptibility, heat capacity and low temperature neutron powder diffraction, the magnetic structure of these two distinct polymorphs have been solved. The details of these antiferromagnetic structures will be described considering the super- and super-superexchange interactions. In addition, investigating the maricite NaFePO4 polymorph, which consists of edge-sharing FeO6 octahedral chains, we have discovered the occurrence of spin-flop transition below 40 kOe using susceptibility measurement and low-temperature Mossbauer spectroscopy. This spin-flopping (or metamagnetism) phenomenon in maricite NaFePO4 will be described in detail [1-5] to showcase the rich magnetism present in NaFePO4 insertion materials. © 2014 ECS - The Electrochemical Societyen_AU
dc.identifier.booktitleECS Meeting Abstracts, MA2014-02, A2-Batteries Beyond Lithium Ionen_AU
dc.identifier.citationBarpanda, P., Avdeev, M., & Ling, C. D. (2014). Magnetic structure and properties of NaFePO4 polymorphs: antiferromagnetic ordering and spin-flop transition. Presented at 2014 ECS and SMEQ Joint International Meeting October 5-9, 2014, Cancun, Mexico. In ECS Meeting Abstracts, MA2014-02, A2-Batteries Beyond Lithium Ion. doi:10.1149/MA2014-02/2/110en_AU
dc.identifier.conferenceenddate9 October 2014en_AU
dc.identifier.conferencename2014 ECS and SMEQ Joint International Meetingen_AU
dc.identifier.conferenceplaceCancun, Mexicoen_AU
dc.identifier.conferencestartdate5 October 2014en_AU
dc.identifier.issn2151-2043en_AU
dc.identifier.pagination110en_AU
dc.identifier.urihttps://doi.org/10.1149/MA2014-02/2/110en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11215en_AU
dc.identifier.volumeMA2014-02en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectElectric batteriesen_AU
dc.subjectCathodesen_AU
dc.subjectOxidesen_AU
dc.subjectRedox reactionsen_AU
dc.subjectTransition elementsen_AU
dc.subjectMagnetic propertiesen_AU
dc.titleMagnetic structure and properties of NaFePO4 polymorphs: antiferromagnetic ordering and spin-flop transitionen_AU
dc.typeConference Abstracten_AU
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