Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy
Abstract Control of magnetization reversal processes is a key issue for the implementation of magnetic materials in technological applications. The modulation of shape magnetic anisotropy in nanowire structures with a high aspect ratio is an efficient way to tune sharp in‐plane magnetic switching. H...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-02-01
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| Series: | Advanced Sensor Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adsr.202200042 |
| _version_ | 1797775057028644864 |
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| author | Aleix Barrera Emile Fourneau Sergi Martín Josep Maria Batllori Jordi Alcalá Lluís Balcells Narcís Mestres Ngoc Duy Nguyen Alvaro Sanchez Alejandro V. Silhanek Anna Palau |
| author_facet | Aleix Barrera Emile Fourneau Sergi Martín Josep Maria Batllori Jordi Alcalá Lluís Balcells Narcís Mestres Ngoc Duy Nguyen Alvaro Sanchez Alejandro V. Silhanek Anna Palau |
| author_sort | Aleix Barrera |
| collection | DOAJ |
| description | Abstract Control of magnetization reversal processes is a key issue for the implementation of magnetic materials in technological applications. The modulation of shape magnetic anisotropy in nanowire structures with a high aspect ratio is an efficient way to tune sharp in‐plane magnetic switching. However, control of fast magnetization reversal processes induced by perpendicular magnetic fields is much more challenging. Here, tunable sharp magnetoresistance changes, triggered by out‐of‐plane magnetic fields, are demonstrated in thin permalloy strips grown on LaAlO3 single crystal substrates. Micromagnetic simulations are used to evaluate the resistance changes of the strips at different applied field values and directions and correlate them with the magnetic domain distribution. The experimentally observed sharp magnetic switching, tailored by the shape anisotropy of the strips, is properly accounted for by numerical simulations when considering a substrate‐induced uniaxial magnetic anisotropy. These results are promising for the design of magnetic sensors and other advanced magnetoresistive devices working with perpendicular magnetic fields by using simple structures. |
| first_indexed | 2024-03-12T22:29:51Z |
| format | Article |
| id | doaj.art-b301aee926794a41ab9a57a0e74d8378 |
| institution | Directory Open Access Journal |
| issn | 2751-1219 |
| language | English |
| last_indexed | 2024-03-12T22:29:51Z |
| publishDate | 2023-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Sensor Research |
| spelling | doaj.art-b301aee926794a41ab9a57a0e74d83782023-07-21T15:30:39ZengWiley-VCHAdvanced Sensor Research2751-12192023-02-0122n/an/a10.1002/adsr.202200042Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic AnisotropyAleix Barrera0Emile Fourneau1Sergi Martín2Josep Maria Batllori3Jordi Alcalá4Lluís Balcells5Narcís Mestres6Ngoc Duy Nguyen7Alvaro Sanchez8Alejandro V. Silhanek9Anna Palau10Insitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainSolid‐State Physics ‐ Interfaces and Nanostructures Q‐MAT CESAM Université de Liége B‐4000 Sart Tilman BelgiumInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainSolid‐State Physics ‐ Interfaces and Nanostructures Q‐MAT CESAM Université de Liége B‐4000 Sart Tilman BelgiumDepartament de Fisica Universitat Autonoma de Barcelona Bellaterra Barcelona 08193 Catalonia SpainSolid‐State Physics ‐ Interfaces and Nanostructures Q‐MAT CESAM Université de Liége B‐4000 Sart Tilman BelgiumInsitut de Ciencia de Materials de Barcelona CSIC Campus de la UAB Bellaterra 08193 Catalonia SpainAbstract Control of magnetization reversal processes is a key issue for the implementation of magnetic materials in technological applications. The modulation of shape magnetic anisotropy in nanowire structures with a high aspect ratio is an efficient way to tune sharp in‐plane magnetic switching. However, control of fast magnetization reversal processes induced by perpendicular magnetic fields is much more challenging. Here, tunable sharp magnetoresistance changes, triggered by out‐of‐plane magnetic fields, are demonstrated in thin permalloy strips grown on LaAlO3 single crystal substrates. Micromagnetic simulations are used to evaluate the resistance changes of the strips at different applied field values and directions and correlate them with the magnetic domain distribution. The experimentally observed sharp magnetic switching, tailored by the shape anisotropy of the strips, is properly accounted for by numerical simulations when considering a substrate‐induced uniaxial magnetic anisotropy. These results are promising for the design of magnetic sensors and other advanced magnetoresistive devices working with perpendicular magnetic fields by using simple structures.https://doi.org/10.1002/adsr.202200042magnetic materialsmagnetic sensorsmagnetoresistancespintronicsthin films |
| spellingShingle | Aleix Barrera Emile Fourneau Sergi Martín Josep Maria Batllori Jordi Alcalá Lluís Balcells Narcís Mestres Ngoc Duy Nguyen Alvaro Sanchez Alejandro V. Silhanek Anna Palau Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy Advanced Sensor Research magnetic materials magnetic sensors magnetoresistance spintronics thin films |
| title | Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy |
| title_full | Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy |
| title_fullStr | Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy |
| title_full_unstemmed | Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy |
| title_short | Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy |
| title_sort | tunable perpendicular magnetoresistive sensor driven by shape and substrate induced magnetic anisotropy |
| topic | magnetic materials magnetic sensors magnetoresistance spintronics thin films |
| url | https://doi.org/10.1002/adsr.202200042 |
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