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@ARTICLE{Popov:891726,
      author       = {Popov, A. G. and Golovnia, O. A. and Gaviko, V. S. and
                      Vasilenko, D. Yu and Bratushev, D. Yu and Balaji, V. I.
                      Nithin and Kovacs, Andras and Pradeep, K. G. and Gopalan,
                      R.},
      title        = {{D}evelopment of high-coercivity state in high-energy and
                      high-temperature {S}m-{C}o-{F}e-{C}u-{Z}r magnets upon step
                      cooling},
      journal      = {Journal of alloys and compounds},
      volume       = {820},
      issn         = {0925-8388},
      address      = {Lausanne},
      publisher    = {Elsevier},
      reportid     = {FZJ-2021-01699},
      pages        = {153103 -},
      year         = {2020},
      abstract     = {The work compares the peculiarities of the high-coercivity
                      state formation in the Sm-Co-Fe-Cu-Zr high-temperature and
                      high-energy permanent magnets (HTPM and HEPM) in the course
                      of the heat treatment with the stepwise decreasing
                      temperature from 830 to 400 °C. Two types of magnets with
                      varying Fe concentration, i.e., Sm(Co0.88-xFexCu0.09Zr0.03)7
                      with x = 0–0.12 (the HTPMs) and Sm(Co0.91-xFexCu0.06
                      Zr0.03)7.5 with x = 0.24–0.33 (the HEPMs) were studied at
                      different temperatures of heat treatment for phase formation
                      by x-ray diffraction followed by magnetic property
                      measurements. Microstructure characterization was performed
                      using transmission electron microscopy, whereas the
                      three-dimensional elemental distribution at near-atomic
                      scale was obtained using atom probe tomography. In HEPMs,
                      the main increase in coercivity and relaxation of stresses
                      accompanied by intensive enrichment of the 1:5 phase in Cu
                      are observed at high temperatures (Т ≈ 700 °C). In
                      HTPMs, the coercivity monotonously increases in the entire
                      temperature range of the slow cooling from 700 to 400 °C at
                      a rate of 0.5 °C/s. At the temperature close to the Curie
                      temperature (∼550 °C) of the Sm(Co,Cu)5-type phase, the
                      anomaly of the coercivity increment has been observed. The
                      interphase stresses grow and the elemental redistribution
                      appears to be accelerated simultaneously. The non-uniform Cu
                      distribution in the 1:5 phase can be described by the
                      formation of Cu-rich interlayers at the interface of the
                      Sm(Co,Cu)5 and Sm2(Co,Fe)17-type phases.},
      cin          = {ER-C-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000507854700026},
      doi          = {10.1016/j.jallcom.2019.153103},
      url          = {https://juser.fz-juelich.de/record/891726},
}