Holographic imaging of interlayer coupling in Co/Pt/NiFe
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 orthogona...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
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| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/2/023045 |
| _version_ | 1797751717102616576 |
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| author | Thomas A Duckworth Feodor Y Ogrin Guillaume Beutier Sarnjeet S Dhesi Stuart A Cavill Sean Langridge Amy Whiteside Thomas Moore Maxime Dupraz Flora Yakhou Gerrit van der Laan |
| author_facet | Thomas A Duckworth Feodor Y Ogrin Guillaume Beutier Sarnjeet S Dhesi Stuart A Cavill Sean Langridge Amy Whiteside Thomas Moore Maxime Dupraz Flora Yakhou Gerrit van der Laan |
| author_sort | Thomas A Duckworth |
| collection | DOAJ |
| description | 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 μ m 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. |
| first_indexed | 2024-03-12T16:52:39Z |
| format | Article |
| id | doaj.art-6f980650540c418eac380be3ad115ec9 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:39Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-6f980650540c418eac380be3ad115ec92023-08-08T11:04:58ZengIOP PublishingNew Journal of Physics1367-26302013-01-0115202304510.1088/1367-2630/15/2/023045Holographic imaging of interlayer coupling in Co/Pt/NiFeThomas A Duckworth0Feodor Y Ogrin1Guillaume Beutier2Sarnjeet S Dhesi3Stuart A Cavill4Sean Langridge5Amy Whiteside6Thomas Moore7Maxime Dupraz8Flora Yakhou9Gerrit van der Laan10School of Physics, University of Exeter , Stocker Road, Exeter EX4 4QL, UKSchool of Physics, University of Exeter , Stocker Road, Exeter EX4 4QL, UKSIMaP, Grenoble-INP, CNRS, UJF, BP 75, F-38402 Saint Martin d'Hères, FranceDiamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UKDiamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UKISIS, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot OX11 0QX, UKSchool of Physics and Astronomy, E C Stoner Building, University of Leeds , Leeds LS2 9JT, UKSchool of Physics and Astronomy, E C Stoner Building, University of Leeds , Leeds LS2 9JT, UKSIMaP, Grenoble-INP, CNRS, UJF, BP 75, F-38402 Saint Martin d'Hères, FranceEuropean Synchrotron Radiation Facility, F-38043 Grenoble, FranceDiamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, UKWe 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 μ m 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.https://doi.org/10.1088/1367-2630/15/2/023045 |
| spellingShingle | Thomas A Duckworth Feodor Y Ogrin Guillaume Beutier Sarnjeet S Dhesi Stuart A Cavill Sean Langridge Amy Whiteside Thomas Moore Maxime Dupraz Flora Yakhou Gerrit van der Laan Holographic imaging of interlayer coupling in Co/Pt/NiFe New Journal of Physics |
| title | Holographic imaging of interlayer coupling in Co/Pt/NiFe |
| title_full | Holographic imaging of interlayer coupling in Co/Pt/NiFe |
| title_fullStr | Holographic imaging of interlayer coupling in Co/Pt/NiFe |
| title_full_unstemmed | Holographic imaging of interlayer coupling in Co/Pt/NiFe |
| title_short | Holographic imaging of interlayer coupling in Co/Pt/NiFe |
| title_sort | holographic imaging of interlayer coupling in co pt nife |
| url | https://doi.org/10.1088/1367-2630/15/2/023045 |
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