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@ARTICLE{Kozowski:1018231,
      author       = {Kozłowski, Paweł and Fabrykiewicz, Piotr and Sosnowska,
                      Izabela and Fauth, François and Senyshyn, Anatoliy and
                      Suard, Emmanuelle and Oleszak, Dariusz and Przeniosło,
                      Radosław},
      title        = {{M}onoclinic symmetry of the hcp-type ordered areas in bulk
                      cobalt},
      journal      = {Physical review / B},
      volume       = {107},
      number       = {10},
      issn         = {2469-9950},
      address      = {College Park, Maryland},
      publisher    = {Americal Physical Society},
      reportid     = {FZJ-2023-04627},
      pages        = {104104},
      year         = {2023},
      abstract     = {The gradual ferromagnetic spin reorientation in hexagonal
                      close packed cobalt (hcp-Co) phase between 230 $^\circ$C and
                      330 $^\circ$C reported for a Co single crystal [Bertaut
                      $\textit{et al.}$, Solid State Commun. $\textbf{1}$, 81
                      (1963)] suggests that this phase could not have a hexagonal
                      symmetry. This hypothesis is verified positively by
                      synchrotron radiation diffraction and neutron diffraction on
                      polycrystalline powder cobalt. The analysis of diffraction
                      data has been done by using a specific set of Bragg peaks,
                      which are not sensitive to the stacking faults present in
                      abundance in hcp-Co. The crystal structure of the hcp-type
                      ordered areas of cobalt is described by the monoclinic
                      symmetry with the magnetic space group $C2'/m'$. In this
                      monoclinic crystal structure the former hexagonal $[001]$
                      axis is no longer perpendicular to the hexagonal layers. The
                      hexagonal $[001]$ and $[010]$ axes make an angle equal
                      $\alpha \approx 90.10(1)$ $^\circ$, while the angle between
                      in-plane $[100]$ and $[010]$ axes equals $\gamma \approx
                      120.11(1)$ $^\circ$. The monoclinic symmetry provides an
                      approximate description of the crystal structure of the
                      stacking faulted hcp-Co areas coexisting with fcc-Co areas.},
      cin          = {JCNS-FRM-II / JARA-FIT / JCNS-2 / MLZ / JCNS-4},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-2-20110106 /
                      I:(DE-588b)4597118-3 / I:(DE-Juel1)JCNS-4-20201012},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4) / 632 - Materials – Quantum, Complex and
                      Functional Materials (POF4-632)},
      pid          = {G:(DE-HGF)POF4-6G4 / G:(DE-HGF)POF4-632},
      experiment   = {EXP:(DE-MLZ)SPODI-20140101 / EXP:(DE-MLZ)External-20140101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000964159000003},
      doi          = {10.1103/PhysRevB.107.104104},
      url          = {https://juser.fz-juelich.de/record/1018231},
}