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Magnetic phase diagram of K 2 Cr 8 O 16 clarified by high-pressure muon spin spectroscopy
KTH, School of Engineering Sciences (SCI), Applied Physics, Materials and Nanophysics.
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2019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, no 1, article id 1141Article in journal (Refereed) Published
Abstract [en]

The K 2 Cr 8 O 16 compound belongs to a series of quasi-1D compounds with intriguing magnetic properties that are stabilized through a high-pressure synthesis technique. In this study, a muon spin rotation, relaxation and resonance (μ + SR) technique is used to investigate the pressure dependent magnetic properties up to 25 kbar. μ + SR allows for measurements in true zero applied field and hereby access the true intrinsic material properties. As a result, a refined temperature/pressure phase diagram is presented revealing a novel low temperature/high pressure (p C1 = 21 kbar) transition from a ferromagnetic insulating to a high-pressure antiferromagnetic insulator. Finally, the current study also indicates the possible presence of a quantum critical point at p C2 ~ 33 kbar where the magnetic order in K 2 Cr 8 O 16 is expected to be fully suppressed even at T = 0 K.

Place, publisher, year, edition, pages
Nature Publishing Group, 2019. Vol. 9, no 1, article id 1141
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Other Engineering and Technologies
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URN: urn:nbn:se:kth:diva-246400DOI: 10.1038/s41598-018-37844-5ISI: 000457616300030PubMedID: 30718649Scopus ID: 2-s2.0-85061061260OAI: oai:DiVA.org:kth-246400DiVA, id: diva2:1300931
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QC 20190401

Available from: 2019-04-01 Created: 2019-04-01 Last updated: 2019-04-01Bibliographically approved

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Forslund, Ola KenjiNocerino, ElisabettaJonsson, ViktorMånsson, Martin

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