Direct device integration of single 1D nanoparticle assemblies; a magnetization reversal and magnetotransport study
(2025) In Nanotechnology 36(18).- Abstract
- Nanochains (NCs) made up of a one-dimensional arrangement of magnetic
anoparticles (NPs) exhibit anisotropic properties with potential for various applications. Herein, using a novel self-assembly method we directly integrate single NCs onto desired substrates including devices. We present a nanoscopic analysis of magnetization reversal in 1D linear NP arrays by combining x-ray microscopy, magnetoresistance (MR), and micromagnetic simulations. Imaging the local magnetization along individual NCs by scanning transmission x-ray microscopy and x-ray magnetic circular dichroism under varying in situ magnetic fields shows
that each structure undergoes distinct non-homogeneous magnetization reversal processes. The experimental... (More) - Nanochains (NCs) made up of a one-dimensional arrangement of magnetic
anoparticles (NPs) exhibit anisotropic properties with potential for various applications. Herein, using a novel self-assembly method we directly integrate single NCs onto desired substrates including devices. We present a nanoscopic analysis of magnetization reversal in 1D linear NP arrays by combining x-ray microscopy, magnetoresistance (MR), and micromagnetic simulations. Imaging the local magnetization along individual NCs by scanning transmission x-ray microscopy and x-ray magnetic circular dichroism under varying in situ magnetic fields shows
that each structure undergoes distinct non-homogeneous magnetization reversal processes. The experimental observations are complemented by micromagnetic simulations, revealing that morphological inhomogeneities critically influence the reversal process where regions with parallel chains or larger multi-domain particles act as nucleation centers for the magnetization switching and smaller particles provide pinning sites for the domain propagation. Magnetotransport through single NCs reveals distinct MR behavior that is correlated with the unique magnetization reversal processes dictated by the morphology of the structures. This study provides new insights into the complex magnetization reversal mechanism inherent to one-dimensional particle assemblies and the effective parameters that govern the process.
(Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2abfd616-8e53-4eed-bf30-9f204bbd67c1
- author
- Sedrpooshan, Mehran
LU
; Bulbucan, Claudiu
LU
; Carrad, Damon J.
; Jespersen, Thomas S
; Burke, Adam
LU
; Messing, Maria LU and Westerström, Rasmus LU
- organization
-
- Synchrotron Radiation Research
- NanoLund: Centre for Nanoscience
- LTH Profile Area: Nanoscience and Semiconductor Technology
- LU Profile Area: Light and Materials
- LTH Profile Area: Aerosols
- MAX IV, Science division
- Sentio: Integrated Sensors and Adaptive Technology for Sustainable Products and Manufacturing
- Solid State Physics
- LTH Profile Area: Photon Science and Technology
- publishing date
- 2025
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nanotechnology
- volume
- 36
- issue
- 18
- article number
- 185601
- pages
- 7 pages
- publisher
- IOP Publishing
- external identifiers
-
- pmid:40101303
- scopus:105002302842
- ISSN
- 0957-4484
- DOI
- 10.1088/1361-6528/adc1d0
- language
- English
- LU publication?
- yes
- id
- 2abfd616-8e53-4eed-bf30-9f204bbd67c1
- date added to LUP
- 2025-04-29 14:01:27
- date last changed
- 2025-04-30 10:00:41
@article{2abfd616-8e53-4eed-bf30-9f204bbd67c1, abstract = {{Nanochains (NCs) made up of a one-dimensional arrangement of magnetic <br/> anoparticles (NPs) exhibit anisotropic properties with potential for various applications. Herein, using a novel self-assembly method we directly integrate single NCs onto desired substrates including devices. We present a nanoscopic analysis of magnetization reversal in 1D linear NP arrays by combining x-ray microscopy, magnetoresistance (MR), and micromagnetic simulations. Imaging the local magnetization along individual NCs by scanning transmission x-ray microscopy and x-ray magnetic circular dichroism under varying in situ magnetic fields shows<br/>that each structure undergoes distinct non-homogeneous magnetization reversal processes. The experimental observations are complemented by micromagnetic simulations, revealing that morphological inhomogeneities critically influence the reversal process where regions with parallel chains or larger multi-domain particles act as nucleation centers for the magnetization switching and smaller particles provide pinning sites for the domain propagation. Magnetotransport through single NCs reveals distinct MR behavior that is correlated with the unique magnetization reversal processes dictated by the morphology of the structures. This study provides new insights into the complex magnetization reversal mechanism inherent to one-dimensional particle assemblies and the effective parameters that govern the process.<br/>}}, author = {{Sedrpooshan, Mehran and Bulbucan, Claudiu and Carrad, Damon J. and Jespersen, Thomas S and Burke, Adam and Messing, Maria and Westerström, Rasmus}}, issn = {{0957-4484}}, language = {{eng}}, number = {{18}}, publisher = {{IOP Publishing}}, series = {{Nanotechnology}}, title = {{Direct device integration of single 1D nanoparticle assemblies; a magnetization reversal and magnetotransport study}}, url = {{http://dx.doi.org/10.1088/1361-6528/adc1d0}}, doi = {{10.1088/1361-6528/adc1d0}}, volume = {{36}}, year = {{2025}}, }