Show simple item record

dc.contributor.authorBassey, Euan
dc.contributor.authorPaddison, Joseph AM
dc.contributor.authorKeyzer, Evan N
dc.contributor.authorLee, Jeongjae
dc.contributor.authorManuel, Pascal
dc.contributor.authorda Silva, Ivan
dc.contributor.authorDutton, Sian
dc.contributor.authorGrey, Clare
dc.contributor.authorCliffe, Matthew J
dc.date.accessioned2020-07-17T14:17:35Z
dc.date.available2020-07-17T14:17:35Z
dc.date.issued2020-08-17
dc.identifier.issn0020-1669
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/308075
dc.description.abstractUnderstanding the effect of chemical composition on the strength of magnetic interactions is key to the design of magnets with high operating temperatures. The magnetic divalent first-row transition metal (TM) thiocyanates are a class of chemically simple layered molecular frameworks. Here, we report two new members of the family, manganese(II) thiocyanate, Mn(NCS)2, and iron(II) thiocyanate, Fe(NCS)2. Using magnetic susceptibility measurements on these materials and on cobalt(II) thiocyanate and nickel(II) thiocyanate, Co(NCS)2 and Ni(NCS)2, respectively, we identify significantly stronger net antiferromagnetic interactions between the earlier TM ions-a decrease in the Weiss constant, θ, from 29 K for Ni(NCS)2 to -115 K for Mn(NCS)2-a consequence of more diffuse 3d orbitals, increased orbital overlap, and increasing numbers of unpaired t2g electrons. We elucidate the magnetic structures of these materials: Mn(NCS)2, Fe(NCS)2, and Co(NCS)2 order into the same antiferromagnetic commensurate ground state, while Ni(NCS)2 adopts a ground state structure consisting of ferromagnetically ordered layers stacked antiferromagnetically. We show that significantly stronger exchange interactions can be realized in these thiocyanate frameworks by using earlier TMs.
dc.description.sponsorshipEPSRC NPIF 2018 fund Laboratory Directed Research and Development Program of Oak Ridge National Laboratory NSERC of Canada PGSD fund Trinity College, Cambridge School of Chemistry, University of Nottingham Hobday Fellowship EPSRC Strategic Equipment Grant EP/M000524/1
dc.format.mediumPrint-Electronic
dc.languageeng
dc.publisherAmerican Chemical Society (ACS)
dc.rightsAll rights reserved
dc.titleStrengthening the Magnetic Interactions in Pseudobinary First-Row Transition Metal Thiocyanates, M(NCS)2.
dc.typeArticle
prism.endingPage11639
prism.issueIdentifier16
prism.publicationDate2020
prism.publicationNameInorg Chem
prism.startingPage11627
prism.volume59
dc.identifier.doi10.17863/CAM.55170
dcterms.dateAccepted2020-07-08
rioxxterms.versionofrecord10.1021/acs.inorgchem.0c01478
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2020-08
dc.contributor.orcidBassey, Euan [0000-0001-8827-7175]
dc.contributor.orcidDutton, Sian [0000-0003-0984-5504]
dc.contributor.orcidGrey, Clare [0000-0001-5572-192X]
dc.contributor.orcidCliffe, Matthew J [0000-0002-0408-7647]
dc.identifier.eissn1520-510X
rioxxterms.typeJournal Article/Review
pubs.funder-project-idEngineering and Physical Sciences Research Council (EP/M000524/1)
cam.issuedOnline2020-07-27
cam.orpheus.successMon Aug 03 08:53:50 BST 2020 - Embargo updated
cam.orpheus.counter2
rioxxterms.freetoread.startdate2021-07-27


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record