TY - JOUR
T1 - Exchange coupling in FeTaN-FeSm-FeTaN multilayers
T2 - 2002 International Magnetics Conference (Intermag 2002)
AU - Gubbiotti, Gianluca
AU - Carlotti, Giovanni
AU - Madami, Marco
AU - Weston, James
AU - Vavassori, Paolo
AU - Zangari, Giovanni
N1 - Funding Information:
Manuscript received February 14, 2002; revised May 21, 2002. This work was supported by the Ministero dell’Universitá e della Ricerca Scientifica under COFIN 2000, by the National Institute of Physics Matter under the Magnetic Dots (MAGDOT) Progetti Avanzati ed Interventi di Sezione Research Programs, and by the Defense Advanced Research Projects Agency under Grant DAAD 19-01-1-0546.
PY - 2002/9/1
Y1 - 2002/9/1
N2 - The dependence of the interlayer coupling on both the soft (FeTaN) and hard (FeSm) layer thickness in FeTaN-FeSm-FeTaN multilayers, deposited by dc magnetron sputtering, has been investigated. The magnetization reversal process is examined experimentally using a magnetooptical Kerr effect. The exchange field Hex, which is a measure of the average coupling between the soft and hard layers, was determined from the field shift of the minor hysteresis loop. The value of Hex increases as the number of the soft FeTaN layer increases. A significant and fully reversible transverse hysteresis loop was measured indicating that, during the magnetization-reversal process, the magnetic moments in the soft layers rotate reversibly, as typical of exchange-spring systems.
AB - The dependence of the interlayer coupling on both the soft (FeTaN) and hard (FeSm) layer thickness in FeTaN-FeSm-FeTaN multilayers, deposited by dc magnetron sputtering, has been investigated. The magnetization reversal process is examined experimentally using a magnetooptical Kerr effect. The exchange field Hex, which is a measure of the average coupling between the soft and hard layers, was determined from the field shift of the minor hysteresis loop. The value of Hex increases as the number of the soft FeTaN layer increases. A significant and fully reversible transverse hysteresis loop was measured indicating that, during the magnetization-reversal process, the magnetic moments in the soft layers rotate reversibly, as typical of exchange-spring systems.
KW - Anisotropy-growth induced
KW - Coercivity
KW - Exchange spring
KW - Magnetooptic Kerr effect
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U2 - 10.1109/TMAG.2002.803238
DO - 10.1109/TMAG.2002.803238
M3 - Conference article
AN - SCOPUS:0036762078
SN - 0018-9464
VL - 38
SP - 2779
EP - 2781
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 5 I
Y2 - 28 April 2002 through 2 May 2002
ER -