TY - JOUR
T1 - Holographic imaging of interlayer coupling in Co/Pt/NiFe
AU - Duckworth, T.A.
AU - Ogrin, F.Y.
AU - Beutier, G.
AU - Dupraz, M.
AU - Dhesi, S.S.
AU - Cavill, S.A.
AU - Van Der Laan, G.
AU - Langridge, S.
AU - Whiteside, A.
AU - Moore, T.
AU - Yakhou, F.
PY - 2013/2/1
Y1 - 2013/2/1
N2 - We present a method to determine the magnetic configuration of an in-plane magnetized permalloy layer using Fourier transform holography with extended references in an off-normal geometry. We use a narrow slit as an extended holographic reference to record holograms with the sample surface orthogonal to the incident x-ray beam, as well as rotated by 30° and 45° with respect to the beam. To demonstrate the sensitivity of the technique to in-plane magnetization, we present images of flux closed ground states in thin (∼50 nm) permalloy elements, less than 1 μm in lateral size. Images of the in-plane domain pattern which is magnetostatically imprinted into a permalloy film by the stray fields generated by an adjacent Co/Pt multilayer were obtained. It is found that, whilst the domain patterns within the two magnetic layers show a strong resemblance at remanence within a pristine sample, the similarities disappear after the sample is exposed to a saturating magnetic field.
AB - We present a method to determine the magnetic configuration of an in-plane magnetized permalloy layer using Fourier transform holography with extended references in an off-normal geometry. We use a narrow slit as an extended holographic reference to record holograms with the sample surface orthogonal to the incident x-ray beam, as well as rotated by 30° and 45° with respect to the beam. To demonstrate the sensitivity of the technique to in-plane magnetization, we present images of flux closed ground states in thin (∼50 nm) permalloy elements, less than 1 μm in lateral size. Images of the in-plane domain pattern which is magnetostatically imprinted into a permalloy film by the stray fields generated by an adjacent Co/Pt multilayer were obtained. It is found that, whilst the domain patterns within the two magnetic layers show a strong resemblance at remanence within a pristine sample, the similarities disappear after the sample is exposed to a saturating magnetic field.
UR - http://www.scopus.com/inward/record.url?scp=84874539613&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/15/2/023045
DO - 10.1088/1367-2630/15/2/023045
M3 - Article
AN - SCOPUS:84874539613
SN - 1367-2630
VL - 15
JO - New Journal of Physics
JF - New Journal of Physics
M1 - 023045
ER -