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Description
  • Monodisperse maghemite nanoparticles with diameter ranging from 7 to 20 nm were examined by the In-field Mossbauer Spectroscopy (IFMS) in varying external magnetic field up to 6 T. Surprisingly, the small-sized particles (7 nm) exhibit nearly no spin canting in contrast to the larger particles with lower surface-to-volume ratio. We demonstrate that the observed phenomenon is originated by lower relative crystallinity of the larger particles with different internal structure. Hence, the persistence of the 2nd and 5th absorption lines in the IFMS cannot be unambiguously assigned to the surface spins.
  • Monodisperse maghemite nanoparticles with diameter ranging from 7 to 20 nm were examined by the In-field Mossbauer Spectroscopy (IFMS) in varying external magnetic field up to 6 T. Surprisingly, the small-sized particles (7 nm) exhibit nearly no spin canting in contrast to the larger particles with lower surface-to-volume ratio. We demonstrate that the observed phenomenon is originated by lower relative crystallinity of the larger particles with different internal structure. Hence, the persistence of the 2nd and 5th absorption lines in the IFMS cannot be unambiguously assigned to the surface spins. (en)
Title
  • Structural disorder versus spin canting in monodisperse maghemite nanocrystals
  • Structural disorder versus spin canting in monodisperse maghemite nanocrystals (en)
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  • Structural disorder versus spin canting in monodisperse maghemite nanocrystals
  • Structural disorder versus spin canting in monodisperse maghemite nanocrystals (en)
skos:notation
  • RIV/00216208:11310/14:10272017!RIV15-MSM-11310___
http://linked.open...avai/riv/aktivita
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  • I, P(7E12057), P(LM2011025)
http://linked.open...iv/cisloPeriodika
  • 22
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  • 47854
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  • RIV/00216208:11310/14:10272017
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  • surface; nanoparticles; gamma-Fe2O3 particles (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [0A7D753BF1C8]
http://linked.open...i/riv/nazevZdroje
  • Applied Physics Letters
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  • 104
http://linked.open...iv/tvurceVysledku
  • Nižňanský, Daniel
  • Vejpravová, Jana
  • Kubíčková, Simona
  • Morales Herrero, M. P.
  • Salas, G.
http://linked.open...ain/vavai/riv/wos
  • 000337161700065
issn
  • 0003-6951
number of pages
http://bibframe.org/vocab/doi
  • 10.1063/1.4881331
http://localhost/t...ganizacniJednotka
  • 11310
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