| Issue |
Europhys. Lett.
Volume 69, Number 5, March 2005
|
|
|---|---|---|
| Page(s) | 805 - 811 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10404-2 | |
| Published online | 09 February 2005 | |
Temperature-dependent magnetic properties of 
:
Effective spin Hamiltonian model
Seagate Research - 1251 Waterfront Place, Pittsburgh, PA 15222, USA
Received:
8
November
2004
Accepted:
22
December
2004
A model of magnetic interactions in the ordered ferromagnetic
is proposed on the basis of first-principles
calculations of non-collinear magnetic configurations and shown
to be capable of explaining recent measurements of
magnetic-anisotropy energy (MAE). The site (
,
)
resolved contributions to the MAE have been distinguished with
small easy-plane and large easy-axis terms.
This model has been tested against available experimental data on
the temperature dependence of MAE showing scaling of uniaxial MAE
(
) with magnetization 
characterized by the unusual exponent of
. It is shown that this unusual behavior of the
can be quantitatively explained within the proposed
model and originates from an effective anisotropic exchange
mediated by the induced moment. The latter is expected
to be a common feature of 
-
alloys having 
elements with large spin-orbit coupling and exchange-enhanced
Stoner susceptibility.
PACS: 75.30.Gw – Magnetic anisotropy / 75.50.Ss – Magnetic recording materials / 71.15.Rf – Relativistic effects
© EDP Sciences, 2005
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.