2004/12/14 by David Mertens, David C. Mertens, Wouter Montfrooij +10
Energy · Engineering · Materials Science · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #FOS: Physical sciences #Iron oxide chemistry and applications #Magnetic Properties and Synthesis of Ferrites #Other Condensed Matter (cond-mat.other) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.other #cond-mat.str-el
paper · pdf · doi:10.48550/arxiv.cond-mat/0412375
7 pages, 3 figures, Included in the proceedings from the 49th Annual Conference on Magnetism and Magnetic Materials, AIP number 188510JAP
arxiv created 2004/12/14 · openalex publication_date 2004/12/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present magnetoresistance and Hall-effect measurements on single crystal magnetite Fe3O4 close to the Verwey transition Tv = 123.8 K. We show that the formation of grain boundaries accompanying the reduction in crystal symmetry plays a significant role in the electron scattering mechanism, and that grain boundaries can account for the apparent change in sign of the charge carriers below Tv.