Magnetic properties of nanocrystalline Fe3O4 films

dc.contributor.author	Tang, Jinke
dc.contributor.author	Wang, Kai-Ying
dc.contributor.author	Zhou, Weilie
dc.date.accessioned	2024-02-12T18:28:42Z
dc.date.available	2024-02-12T18:28:42Z
dc.date.issued	2001-06-01
dc.description	Nanocrystalline magnetite Fe3O4 films of about 180 nm thick have been deposited on Si(100) substrates by pulsed laser deposition. Zero-field-cooled magnetization shows clearly the Verwey transition near 120 K by an abrupt change, which is absent from the field-cooled magnetization. This is correlated to its hysteresis curves where the loops remain open until a high field of 2 T. The magnetization does not saturate in field 2 orders of magnitude higher than its coercive field. Such behaviors may result from the existence of antiphase domains. Antiphase boundaries inside the grains are clearly observed with transmission electron microscopy. Negative magnetoresistance of about 12% has been observed near 120 K in a field of 9 T.
dc.identifier.publisherdoi	10.1063/1.1358350
dc.identifier.uri	https://wyoscholar.uwyo.edu/handle/internal/6217
dc.identifier.uri	https://doi.org/10.15786/wyoscholar/9834
dc.language	English
dc.language.iso	eng
dc.publisher	University of Wyoming. Libraries
dc.relation.ispartof	Faculty Publications - Physics and Astronomy
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.subject	Physical Sciences and Mathematics
dc.title	Magnetic properties of nanocrystalline Fe3O4 films
dc.type	journal contribution
dspace.entity.type	Publication

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