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@ARTICLE{Feygenson:1020997,
      author       = {Feygenson, Mikhail and Huang, Zhongyuan and Xiao, Yinguo
                      and Teng, Xiaowei and Lohstroh, Wiebke and Nandakumaran,
                      Nileena and Neuefeind, Jörg C. and Everett, Michelle and
                      Podlesnyak, Andrey A. and Salazar-Alvarez, Germán and
                      Ulusoy, Seda and Valvo, Mario and Su, Yixi and Ehlert,
                      Sascha and Qdemat, Asma and Ganeva, Marina and Zhang, Lihua
                      and Aronson, Meigan C.},
      title        = {{P}robing spin waves in {C}o$_{3}${O}$_{4}$ nanoparticles
                      for magnonics applications},
      journal      = {Nanoscale},
      volume       = {16},
      number       = {3},
      issn         = {2040-3364},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2024-00457},
      pages        = {1291-1303},
      year         = {2024},
      abstract     = {The magnetic properties of spinel nanoparticles can be
                      controlled by synthesizing particles of a specific shape and
                      size. The synthesized nanorods, nanodots and cubic
                      nanoparticles have different crystal planes selectively
                      exposed on the surface. The surface effects on the static
                      magnetic properties are well documented, while their
                      influence on spin waves dispersion is still being debated.
                      Our ability to manipulate spin waves using surface and
                      defect engineering in magnetic nanoparticles is the key to
                      designing magnonic devices. We synthesized cubic and
                      spherical nanoparticles of a classical antiferromagnetic
                      material Co3O4 to study the shape and size effects on their
                      static and dynamic magnetic proprieties. Using a combination
                      of experimental methods, we probed the magnetic and crystal
                      structures of our samples and directly measured spin wave
                      dispersions using inelastic neutron scattering. We found a
                      weak, but unquestionable, increase in exchange interactions
                      for the cubic nanoparticles as compared to spherical
                      nanoparticle and bulk powder reference samples.
                      Interestingly, the exchange interactions in spherical
                      nanoparticles have bulk-like properties, despite a
                      ferromagnetic contribution from canted surface spins.},
      cin          = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ESS / JCNS-FRM-II / JCNS-1
                      / MLZ},
      ddc          = {600},
      cid          = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
                      $I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ESS-20170404 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)JCNS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ)
                      (POF4-6G4)},
      pid          = {G:(DE-HGF)POF4-6G4},
      experiment   = {EXP:(DE-MLZ)TOF-TOF-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {38131194},
      UT           = {WOS:001129107200001},
      doi          = {10.1039/D3NR04424F},
      url          = {https://juser.fz-juelich.de/record/1020997},
}