| Spin-glass-like freezing and enhanced magnetization in ultra-small CoFe2O4 nanoparticles. | |
| | |
MedLine Citation:
|
PMID: 20203355 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
The magnetic properties of ultra-small (3 nm) CoFe(2)O(4) nanoparticles have been investigated by DC magnetization measurements as a function of temperature and magnetic field. The main features of the magnetic behaviour are blocking of non-interacting particle moments (zero-field-cooled magnetization T(max) approximately 40 K), a rapid increase of saturation magnetization (up to values higher than for the bulk material) at low T and an increase in anisotropy below 30 K due to the appearance of exchange bias. The low temperature behaviour is determined by a random freezing of surface spins. Localized spin-canting and cation distribution between the two sublattices of the spinel structure account quantitatively for the observed increase in saturation magnetization. |
| | |
Authors:
|
D Peddis; C Cannas; G Piccaluga; E Agostinelli; D Fiorani |
Related Documents
:
|
8749735 - An efficient birdcage resonator at 2.5 mhz using a novel multilayer self-capacitance co... 11334275 - Intraoperative magnetic resonance imaging combined with neuronavigation: a new concept. 17969175 - Induced magnetic field gradients and forces in the human head in mri. 16340175 - Magnetic resonance imaging of morphological and functional changes of the uterus induce... 8817045 - Shoulder imaging. a review. 22237675 - Comparison of animal studies between interstitial magnetic resonance lymphography and r... |
Publication Detail:
|
Type: Journal Article Date: 2010-03-05 |
Journal Detail:
|
Title: Nanotechnology Volume: 21 ISSN: 1361-6528 ISO Abbreviation: Nanotechnology Publication Date: 2010 Mar |
Date Detail:
|
Created Date: 2010-03-05 Completed Date: 2010-05-18 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101241272 Medline TA: Nanotechnology Country: England |
Other Details:
|
Languages: eng Pagination: 125705 Citation Subset: - |
Affiliation:
|
CNR-Istituto di Struttura della Materia, Monterotondo Stazione, (RM), Italy. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Two-terminal nanoelectromechanical bistable switches based on molybdenum-sulfur-iodine molecular wir...
Next Document: The fabrication of low-impedance nanoporous gold multiple-electrode arrays for neural electrophysiol...