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  • Forslund, Ola Kenji, et al. (author)
  • Magnetic phase diagram of K2Cr8O16 clarified by high-pressure muon spin spectroscopy
  • 2019
  • In: Scientific Reports. - : NATURE PUBLISHING GROUP. - 2045-2322. ; 9
  • Journal article (peer-reviewed)abstract
    • The K2Cr8O16 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 (mu+SR) technique is used to investigate the pressure dependent magnetic properties up to 25 kbar. mu+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) similar to 33 kbar where the magnetic order in K2Cr8O16 is expected to be fully suppressed even at T = 0 K.
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