Skip to main content
Kent Academic Repository

Ordered mesoporous Fe2O3 with crystalline walls

Chadwick, Alan V., Jiao, Feng, Bruce, Peter G., Harrison, Andrew, Jumas, Jean-Claude, Kockelmann, Winfried (2006) Ordered mesoporous Fe2O3 with crystalline walls. Journal of the American Chemical Society, 128 (16). pp. 5468-5474. ISSN 0002-7863. (doi:10.1021/ja0584774) (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:8948)

Language: English

Restricted to Repository staff only
[thumbnail of JACS_Feng_Fe2O3_2006.pdf]
Official URL:


alpha-Fe2O3 has been synthesized with an ordered mesoporous structure and crystalline walls that exhibit a near-single crystal-like order. The unique magnetic behavior of the material, distinct from bulk nanoparticles of alpha-Fe2O3 or mesoporous Fe2O3 with disordered walls, has been established. Magnetic susceptibility, Mossbauer, and neutron diffraction data show that the material possesses the same long-range magnetic order as bulk alpha-Fe2O3, despite the wall thickness being less than the 8 nm limit below which magnetic ordering breaks down in nanciparticulate alpha-Fe2O3, yet the Morin transition of bulk alpha-Fe2O3 is absent. It is also shown by TEM, PXRD, and EXAFS that alpha-Fe2O3 with the same ordered mesoporous structure but disordered walls contains small crystalline domains. Mossbauer and magnetic susceptibility data demonstrate that this material exhibits no long-range magnetic order but superparamagnetic behavior.

Item Type: Article
DOI/Identification number: 10.1021/ja0584774
Projects: ALISTORE
Subjects: Q Science
Divisions: Divisions > Division of Natural Sciences > Physics and Astronomy
Funders: European Commission (
Depositing User: Alan Chadwick
Date Deposited: 12 Sep 2008 20:04 UTC
Last Modified: 12 Jul 2022 10:38 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

Chadwick, Alan V..

Creator's ORCID:
CReDIT Contributor Roles:
  • Depositors only (login required):

Total unique views for this document in KAR since July 2020. For more details click on the image.