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@INPROCEEDINGS{Friese:902170,
      author       = {Friese, Karen},
      title        = {{C}aloric materials for energy-efficient cooling},
      reportid     = {FZJ-2021-04079},
      year         = {2021},
      abstract     = {Domestic and industrial refrigeration applications
                      contribute a substantial part to mankinds energy
                      consumption. New technologies based on solid state caloric
                      effects, such as magnetocaloric, barocaloric, elastocaloric
                      and electrocaloric effect, promise considerable efficiency
                      gains as compared to today’s vapor compression technology.
                      Within our research we aim for a better understanding of the
                      relation between the material structure and dynamics to
                      guide a sustainable material design.In caloric materials,
                      applied fields (e.g. magnetic, electric, pressure, strain)
                      lead to changes in entropy and in the adiabatic temperature.
                      The observed caloric effects form the basis of the caloric
                      refrigeration cycles. We are interested in the fundamental
                      mechanisms of these caloric effects, which are not yet fully
                      understood. In particular, we studied the magnetocaloric
                      effect in the family of compounds Mn5-xFexSi3.Neutron
                      scattering experiments were crucial for the elucidation of
                      the magnetic and crystalline structures and for the
                      distinction of Mn and Fe [1]. In addition, inelastic neutron
                      scattering investigations revealed that the application of a
                      magnetic field induces (suppresses) fluctuations in the
                      materials. These fluctuations are closely related to the
                      inverse (direct) magnetocaloric effect observed in these
                      compounds [2].[1] N. Maraytta et al., J. Appl. Phys. 128,
                      103903, 2020 ; A. Eich et al., Mater. Res. Express 6,
                      096118, 2019; P. Hering, et al.,Chem. Mater. 27, 7128,
                      2015[2] N. Biniskos, et al., Phys Rev B. 96, 104407, 2017;
                      Biniskos et. al. Phys. Rev. Letters 120, 257205, 2018.},
      month         = {Nov},
      date          = {2021-11-03},
      organization  = {LENS webinar: The role of neutron
                       science in securing a sustainable
                       future, online event (online event), 3
                       Nov 2021 - 3 Nov 2021},
      subtyp        = {Invited},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
                      Research (JCNS) (FZJ) (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
      typ          = {PUB:(DE-HGF)6},
      url          = {https://juser.fz-juelich.de/record/902170},
}