3D imaging of magnetic domains in Nd2Fe14B using scanning hard X-ray nanotomography
(2024) In Journal of Synchrotron Radiation 31(Pt 4). p.877-887- Abstract
Nanoscale structural and electronic heterogeneities are prevalent in condensed matter physics. Investigating these heterogeneities in 3D has become an important task for understanding material properties. To provide a tool to unravel the connection between nanoscale heterogeneity and macroscopic emergent properties in magnetic materials, scanning transmission X-ray microscopy (STXM) is combined with X-ray magnetic circular dichroism. A vector tomography algorithm has been developed to reconstruct the full 3D magnetic vector field without any prior noise assumptions or knowledge about the sample. Two tomographic scans around the vertical axis are acquired on single-crystalline Nd2Fe14B pillars tilted at two... (More)
Nanoscale structural and electronic heterogeneities are prevalent in condensed matter physics. Investigating these heterogeneities in 3D has become an important task for understanding material properties. To provide a tool to unravel the connection between nanoscale heterogeneity and macroscopic emergent properties in magnetic materials, scanning transmission X-ray microscopy (STXM) is combined with X-ray magnetic circular dichroism. A vector tomography algorithm has been developed to reconstruct the full 3D magnetic vector field without any prior noise assumptions or knowledge about the sample. Two tomographic scans around the vertical axis are acquired on single-crystalline Nd2Fe14B pillars tilted at two different angles, with 2D STXM projections recorded using a focused 120 nm X-ray beam with left and right circular polarization. Image alignment and iterative registration have been implemented based on the 2D STXM projections for the two tilts. Dichroic projections obtained from difference images are used for the tomographic reconstruction to obtain the 3D magnetization distribution at the nanoscale.
(Less)
- author
- Banerjee, Srutarshi
; Gürsoy, Doğa
; Deng, Junjing
; Kahnt, Maik
LU
; Kramer, Matthew ; Lynn, Matthew ; Haskel, Daniel and Strempfer, Jörg
- organization
- publishing date
- 2024-07-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- BFeB., imaging, scanning transmission X-ray microscopy, STXM, tomographic reconstruction, X-ray magnetic circular dichroism, XMCD
- in
- Journal of Synchrotron Radiation
- volume
- 31
- issue
- Pt 4
- pages
- 11 pages
- publisher
- International Union of Crystallography
- external identifiers
-
- pmid:38771778
- scopus:85198390310
- ISSN
- 0909-0495
- DOI
- 10.1107/S1600577524003217
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2024 International Union of Crystallography. All rights reserved.
- id
- 41a84d16-cb90-4b1b-8f45-11eed9e3eb6e
- date added to LUP
- 2024-07-24 05:46:55
- date last changed
- 2024-08-12 15:32:37
@article{41a84d16-cb90-4b1b-8f45-11eed9e3eb6e, abstract = {{<p>Nanoscale structural and electronic heterogeneities are prevalent in condensed matter physics. Investigating these heterogeneities in 3D has become an important task for understanding material properties. To provide a tool to unravel the connection between nanoscale heterogeneity and macroscopic emergent properties in magnetic materials, scanning transmission X-ray microscopy (STXM) is combined with X-ray magnetic circular dichroism. A vector tomography algorithm has been developed to reconstruct the full 3D magnetic vector field without any prior noise assumptions or knowledge about the sample. Two tomographic scans around the vertical axis are acquired on single-crystalline Nd<sub>2</sub>Fe<sub>14</sub>B pillars tilted at two different angles, with 2D STXM projections recorded using a focused 120 nm X-ray beam with left and right circular polarization. Image alignment and iterative registration have been implemented based on the 2D STXM projections for the two tilts. Dichroic projections obtained from difference images are used for the tomographic reconstruction to obtain the 3D magnetization distribution at the nanoscale.</p>}}, author = {{Banerjee, Srutarshi and Gürsoy, Doğa and Deng, Junjing and Kahnt, Maik and Kramer, Matthew and Lynn, Matthew and Haskel, Daniel and Strempfer, Jörg}}, issn = {{0909-0495}}, keywords = {{BFeB.; imaging; scanning transmission X-ray microscopy; STXM; tomographic reconstruction; X-ray magnetic circular dichroism; XMCD}}, language = {{eng}}, month = {{07}}, number = {{Pt 4}}, pages = {{877--887}}, publisher = {{International Union of Crystallography}}, series = {{Journal of Synchrotron Radiation}}, title = {{3D imaging of magnetic domains in Nd<sub>2</sub>Fe<sub>14</sub>B using scanning hard X-ray nanotomography}}, url = {{http://dx.doi.org/10.1107/S1600577524003217}}, doi = {{10.1107/S1600577524003217}}, volume = {{31}}, year = {{2024}}, }