We present a theoretical investigation of the thermal hysteresis of iron dots exchange-coupled to an antiferromagnetic substrate. We consider a temperature interval bounded by the Néel temperature of the substrate, and we calculate the heating and cooling curves in the presence of an external field oriented opposite to the interface exchange field. The thermal hysteresis is due to the temperature variation of the interface field and the influence of the geometrical shapes and sizes of the dots on the magnetic states and switching mechanisms. We show that Fe dots on an uncompensated NiO substrate exhibit large thermal hysteresis at room temperature, and external fields of a few kOe. The width of the hysteresis loops depends on the dimensions of the ferromagnetic dot, and can be significant for dots elongated in the direction of the interface field.
Skip Nav Destination
Article navigation
15 December 2007
Research Article|
December 27 2007
Thermal hysteresis of interface biased ferromagnetic dots
Ana L. Dantas;
Ana L. Dantas
Departamento de Física,
Universidade do Estado do Rio Grande do Norte
, 59124-400-Natal-RN, Brazil
Search for other works by this author on:
A. S. W. T. Silva;
A. S. W. T. Silva
Departamento de Física,
Universidade Federal do Rio Grande do Norte
, 59072-970-Natal-RN, Brazil
Search for other works by this author on:
G. O. G. Rebouças;
G. O. G. Rebouças
Departamento de Física,
Universidade Federal do Rio Grande do Norte
, 59072-970-Natal-RN, Brazil
Search for other works by this author on:
A. S. Carriço;
A. S. Carriço
Departamento de Física,
Universidade Federal do Rio Grande do Norte
, 59072-970-Natal-RN, Brazil
Search for other works by this author on:
R. E. Camley
R. E. Camley
Department of Physics,
University of Colorado at Colorado Springs
, Colorado Springs, Colorado 80918, USA
Search for other works by this author on:
J. Appl. Phys. 102, 123907 (2007)
Article history
Received:
August 30 2007
Accepted:
October 29 2007
Citation
Ana L. Dantas, A. S. W. T. Silva, G. O. G. Rebouças, A. S. Carriço, R. E. Camley; Thermal hysteresis of interface biased ferromagnetic dots. J. Appl. Phys. 15 December 2007; 102 (12): 123907. https://doi.org/10.1063/1.2827478
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
A step-by-step guide to perform x-ray photoelectron spectroscopy
Grzegorz Greczynski, Lars Hultman
Scaling effects on the microstructure and thermomechanical response of through silicon vias (TSVs)
Shuhang Lyu, Thomas Beechem, et al.
Related Content
Exchange bias in Fe/FeF2 and Fe/MnF2 model systems
AIP Advances (July 2024)
Exchange bias in Co-Cr 2 O 3 nanocomposites
J. Appl. Phys. (June 2007)
Cone magnetization state and exchange bias in Ir Mn ∕ Cu ∕ [ Co ∕ Pt ] 3 multilayers
J. Appl. Phys. (December 2009)
Dynamic enhancement of the exchange bias training effect
J. Appl. Phys. (March 2007)
Large exchange bias field in the Ni–Mn–Sn Heusler alloys with high content of Mn
Appl. Phys. Lett. (May 2010)