In this paper, the temperature dependence of the hysteretic processes of Co nanowires, squarelly ordered in an array prepared by electrodeposition in nanopores of alumina membranes was analyzed. Both the magnetostatic interactions induced in the nanowires arrays and the thermal stresses (radial, azimuthal and axial stresses), which appear during the cooling of the system (nanowire and alumina template) from room temperature to 3K was evaluated. The analysis of thermal induced stresses provides useful informations concerning the magnetic anisotropy in the Co nanowires. The temperature dependence of the remanent magnetization and coercitive field as an effect of the induced thermal stresses and magnetostatic interactions between nanowires was studied.

1.
M.
Ciureanu
,
F.
Beron
,
L.
Clime
,
P.
Ciureanu
,
A.
Yelon
,
T. A.
Ovari
,
R. W.
Cochrane
,
F.
Normandin
, and
T.
Veres
,
Electrochim. Acta
50
,
4487
(
2005
).
2.
E. D.
Boerner
and
H. N.
Bertram
,
IEEE Trans. Magn.
33
,
3052
(
1997
).
3.
Y.
Nakatani
,
Y.
Uesaka
, and
N.
Hayashi
,
J. Appl. Phys.
28
,
2485
(
1989
).
4.
D. V.
Berkov
,
J. Magn. Magn. Mater.
99
,
7
(
1991
).
5.
L.
Sun
,
Y.
Hao
,
C.-L.
Chien
, and
P. C.
Searson
,
IBM J. Res. Dev.
49
,
79
(
2005
).
6.
E. L.
Silva
,
W. C.
Nunes
,
M.
Knobel
,
J. C.
Denardin
,
D.
Zanchet
,
K.
Pirota
,
D.
Navas
, and
M.
Vázquez
,
Physica B
384
,
22
(
2006
).
7.
P. J.
Schneider
,
Conduction Heat Transfer
(
Addison Wesley
,
Reading, MA
,
1955
), pp.
153
169
.
8.
S.
Wolfram
,
MATHEMATICA: A System for Doing Mathematics by Computer
, 2nd ed. (
Addison-Wesley
,
Cambridge
,
1991
).
9.
B. A.
Bosley
and
J. H.
Weiner
,
Theory of Thermal Stresses
(
Wiley
,
New York
,
1960
).
10.
I.
Dumitru
,
F.
Li
,
J. B.
Wiley
,
D.
Cimpoesu
,
A.
Stancu
, and
L.
Spinu
,
IEEE Trans. Magn.
41
,
3361
(
2005
).
11.
A.
Stancu
,
Proceedings of the Magnetization Processes in Particulate Ferromagnetic Media
, Iasi, Romania (
2005
).
12.
D.
Frenkel
,
Computer Soft Matter
23
,
29
(
2004
).
13.
H. K.
Lee
,
T. C.
Schulthess
,
D. P.
Landau
,
G.
Brown
,
J. P.
Pierce
,
Z.
Gai
,
G. A.
Farnan
, and
J.
Shen
,
J. Appl. Phys.
91
6926
(
2002
).
You do not currently have access to this content.