The University of Southampton
University of Southampton Institutional Repository

Magnetic characteristics of synthetic pseudo-single-domain and multi-domain greigite (Fe3S4)

Magnetic characteristics of synthetic pseudo-single-domain and multi-domain greigite (Fe3S4)
Magnetic characteristics of synthetic pseudo-single-domain and multi-domain greigite (Fe3S4)
We report the magnetic properties of pure synthetic pseudo-single-domain (PSD) and multi-domain (MD) greigite and the grain size dependence of the magnetic properties of greigite for the first time. The dominantly PSD-like and MD-like behavior are demonstrated by hysteresis, first-order reversal curve diagrams, low-temperature cycling (LTC) of room temperature saturation isothermal remanent magnetization (SIRM) and low-temperature SIRM warming curves. Variations in a range of magnetic properties clearly correlate with grain size. Characteristic PSD/MD behavior is preserved at low temperatures, which, coupled with the small decrease in remanence during warming, rule out the presence of substantial superparamagnetic behavior in the studied samples. LTC-SIRM measurements indicate a continuous demagnetization of remanence during cooling. Knowledge of this expanded range of magnetic properties of greigite should be widely useful in environmental magnetic and paleomagnetic studies.
greigite, magnetic properties, grain size, pseudo-single-domain, multi-domain, FORC diagrams
0094-8276
L24304
Chang, L.
d6c90fb1-6a1c-4ac0-9b98-8556d2e80d4c
Roberts, A.P.
4497b436-ef02-428d-a46e-65a22094ba52
Muxworthy, A.R.
931b5755-e923-4995-957f-6af47c5ba6b4
Tang, Y.
e1d9ef8e-9e0a-49d3-b0a8-e572f8298c47
Chen, Q.
dd95839a-6c50-4287-b5d6-1d87c949db2b
Rowan, C.J.
5d88ac64-c1d9-47c5-ba0a-ccf43eccc673
Liu, Q.
9c3579c5-8fa0-402b-ad8e-83f4542b1b05
Pruner, P.
75d4dc34-9a40-4327-adaa-c3161589b9a3
Chang, L.
d6c90fb1-6a1c-4ac0-9b98-8556d2e80d4c
Roberts, A.P.
4497b436-ef02-428d-a46e-65a22094ba52
Muxworthy, A.R.
931b5755-e923-4995-957f-6af47c5ba6b4
Tang, Y.
e1d9ef8e-9e0a-49d3-b0a8-e572f8298c47
Chen, Q.
dd95839a-6c50-4287-b5d6-1d87c949db2b
Rowan, C.J.
5d88ac64-c1d9-47c5-ba0a-ccf43eccc673
Liu, Q.
9c3579c5-8fa0-402b-ad8e-83f4542b1b05
Pruner, P.
75d4dc34-9a40-4327-adaa-c3161589b9a3

Chang, L., Roberts, A.P., Muxworthy, A.R., Tang, Y., Chen, Q., Rowan, C.J., Liu, Q. and Pruner, P. (2007) Magnetic characteristics of synthetic pseudo-single-domain and multi-domain greigite (Fe3S4). Geophysical Research Letters, 34 (24), L24304. (doi:10.1029/2007GL032114).

Record type: Article

Abstract

We report the magnetic properties of pure synthetic pseudo-single-domain (PSD) and multi-domain (MD) greigite and the grain size dependence of the magnetic properties of greigite for the first time. The dominantly PSD-like and MD-like behavior are demonstrated by hysteresis, first-order reversal curve diagrams, low-temperature cycling (LTC) of room temperature saturation isothermal remanent magnetization (SIRM) and low-temperature SIRM warming curves. Variations in a range of magnetic properties clearly correlate with grain size. Characteristic PSD/MD behavior is preserved at low temperatures, which, coupled with the small decrease in remanence during warming, rule out the presence of substantial superparamagnetic behavior in the studied samples. LTC-SIRM measurements indicate a continuous demagnetization of remanence during cooling. Knowledge of this expanded range of magnetic properties of greigite should be widely useful in environmental magnetic and paleomagnetic studies.

This record has no associated files available for download.

More information

Published date: 21 December 2007
Keywords: greigite, magnetic properties, grain size, pseudo-single-domain, multi-domain, FORC diagrams
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 50241
URI: http://eprints.soton.ac.uk/id/eprint/50241
ISSN: 0094-8276
PURE UUID: 9ad2a3fe-2d54-48e9-bfb4-41d97bc91f74

Catalogue record

Date deposited: 01 Feb 2008
Last modified: 15 Mar 2024 10:04

Export record

Altmetrics

Contributors

Author: L. Chang
Author: A.P. Roberts
Author: A.R. Muxworthy
Author: Y. Tang
Author: Q. Chen
Author: C.J. Rowan
Author: Q. Liu
Author: P. Pruner

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×