Between Dec 19, 2024 and Jan 2, 2025, datasets can be submitted to DRUM but will not be processed until after the break. Staff will not be available to answer email during this period, and will not be able to provide DOIs until after Jan 2. If you are in need of a DOI during this period, consider Dryad or OpenICPSR. Submission responses to the UDC may also be delayed during this time.
 

Domain structures in single-crystal magnetite below the Verwey transition as observed with a low-temperature magnetic force microscope

Loading...
Thumbnail Image

Persistent link to this item

Statistics
View Statistics

Journal Title

Journal ISSN

Volume Title

Title

Domain structures in single-crystal magnetite below the Verwey transition as observed with a low-temperature magnetic force microscope

Published Date

1996

Publisher

Geophysical Research Letters (American Geophysical Union)

Type

Article

Abstract

The magnetic domain structures on the {110} plane of magnetite (Fe3O4) below the Verwey transition (Tv=120K) were studied using a Low-Temperature Magnetic Force Microscope (LTMFM). At 298K, domain structures consisted of arrays of 180°, 109° and 71° walls, typical for magnetite with cubic anisotropy. At 77K (below Tv), the cubic style patterns disappeared and transformed into uniaxial patterns consistent with the uniaxial magnetocrystalline symmetry of the low-temperature monoclinic phase of magnetite. We also observed two distinct styles of domain patterns below Tv: (1) wide domains separated by straight 180° walls along the in-plane [100] easy axis; and (2) intricate wavy walls with reverse spike domains characteristic of out-of-plane easy axes. This intimate mixture of domain styles within adjacent areas of the crystal reflects variations in the direction of the magnetic easy axes in different regions produced by c-axis twinning of the crystal below Tv The thermal dependence of planar and wavy-wall patterns show little change from 77K until 110K, where patterns disappear. Upon cooling back to 77K, domain structures are different from the initial 77K states, indicating that renucleation of different domain states occurs by cycling near Tv.

Description

Related to

Replaces

License

Series/Report Number

Funding information

This work was supported by ONR grants N/N00014-94-I-0123 and N/N00014-89-J-1355 (EDD) and NSF grant EAR-9304520 (BMM). This is contribution 9602 of the Institute for Rock Magnetism (IRM). The IRM is supported by grants from the Keck Foundation and the NSF.

Isbn identifier

Doi identifier

10.1029/96GL00962

Previously Published Citation

Moloni, K., B. M. Moskowitz and E. D. Dahlberg (1996). "Domain structures in single-crystal magnetite below the Verwey transition as observed with a low-temperature magnetic force microscope." Geophysical Research Letters 23: 2851-2854.

Other identifiers

Suggested citation

Moloni, Katerina; Moskowitz, Bruce; Dahlberg, E.D.. (1996). Domain structures in single-crystal magnetite below the Verwey transition as observed with a low-temperature magnetic force microscope. Retrieved from the University Digital Conservancy, 10.1029/96GL00962.

Content distributed via the University Digital Conservancy may be subject to additional license and use restrictions applied by the depositor. By using these files, users agree to the Terms of Use. Materials in the UDC may contain content that is disturbing and/or harmful. For more information, please see our statement on harmful content in digital repositories.