Abstract:
:The magnetic microstructure of a natural, finely exsolved intergrowth of submicron magnetite blocks in an ulvöspinel matrix is characterized by using off-axis electron holography in the transmission electron microscope. Single-domain and vortex states in individual blocks, as well as magnetostatic interaction fields between them, are imaged at a spatial resolution approaching the nanometer scale. The images reveal an extremely complicated magnetic structure dominated by the shapes of the blocks and magnetostatic interactions. Magnetic superstates, in which clusters of magnetite blocks act collectively to form vortex and multidomain states that have zero net magnetization, are observed directly.
journal_name
Proc Natl Acad Sci U S Aauthors
Harrison RJ,Dunin-Borkowski RE,Putnis Adoi
10.1073/pnas.262514499keywords:
subject
Has Abstractpub_date
2002-12-24 00:00:00pages
16556-61issue
26eissn
0027-8424issn
1091-6490pii
262514499journal_volume
99pub_type
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