Abstract
The magnetic anisotropy and saturation magnetization of a series of 30 × (2 Å Co+x Å Ni+2 Å Co+10 Å Pt) multilayers, grown in the (111) orientation, has been investigated for Ni thickness ranging from 2 to 56 Å. Vibrating sample magnetometry showed that the easy axis of the multilayers switches from perpendicular to along the film-plane above a Ni thickness of 48 Å. The fact that this transition takes place at a thickness much larger than for example observed for Co/Pd or Co/Pt multilayers, is because in the present multilayers the relatively low shape anisotropy of the Ni is combined with the large Co/Pt surface anisotropy. From the measurements a value for the Co/Ni surface anisotropy of (0.29±0.06) mJ/m2, favouring a perpendicular easy axis, is estimated. Also results on X-ray diffraction, Kerr rotation and temperature dependent magnetization experiments are presented.
| Language | English |
|---|---|
| Pages | L1-L6 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 116 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 1 Oct 1992 |
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Magnetic anisotropy of Co/Ni/Co/Pt multilayers. / Bloemen, P.J.H.; de Jonge, W.J.M.
In: Journal of Magnetism and Magnetic Materials, Vol. 116, No. 1-2, 01.10.1992, p. L1-L6.Research output: Contribution to journal › Letter › Academic › peer-review
TY - JOUR
T1 - Magnetic anisotropy of Co/Ni/Co/Pt multilayers
AU - Bloemen,P.J.H.
AU - de Jonge,W.J.M.
PY - 1992/10/1
Y1 - 1992/10/1
N2 - The magnetic anisotropy and saturation magnetization of a series of 30 × (2 Å Co+x Å Ni+2 Å Co+10 Å Pt) multilayers, grown in the (111) orientation, has been investigated for Ni thickness ranging from 2 to 56 Å. Vibrating sample magnetometry showed that the easy axis of the multilayers switches from perpendicular to along the film-plane above a Ni thickness of 48 Å. The fact that this transition takes place at a thickness much larger than for example observed for Co/Pd or Co/Pt multilayers, is because in the present multilayers the relatively low shape anisotropy of the Ni is combined with the large Co/Pt surface anisotropy. From the measurements a value for the Co/Ni surface anisotropy of (0.29±0.06) mJ/m2, favouring a perpendicular easy axis, is estimated. Also results on X-ray diffraction, Kerr rotation and temperature dependent magnetization experiments are presented.
AB - The magnetic anisotropy and saturation magnetization of a series of 30 × (2 Å Co+x Å Ni+2 Å Co+10 Å Pt) multilayers, grown in the (111) orientation, has been investigated for Ni thickness ranging from 2 to 56 Å. Vibrating sample magnetometry showed that the easy axis of the multilayers switches from perpendicular to along the film-plane above a Ni thickness of 48 Å. The fact that this transition takes place at a thickness much larger than for example observed for Co/Pd or Co/Pt multilayers, is because in the present multilayers the relatively low shape anisotropy of the Ni is combined with the large Co/Pt surface anisotropy. From the measurements a value for the Co/Ni surface anisotropy of (0.29±0.06) mJ/m2, favouring a perpendicular easy axis, is estimated. Also results on X-ray diffraction, Kerr rotation and temperature dependent magnetization experiments are presented.
UR - http://www.scopus.com/inward/record.url?scp=0026938340&partnerID=8YFLogxK
U2 - 10.1016/0304-8853(92)90130-G
DO - 10.1016/0304-8853(92)90130-G
M3 - Letter
VL - 116
SP - L1-L6
JO - Journal of Magnetism and Magnetic Materials
T2 - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 1-2
ER -