Optimization of magnetic reference layer for neutron reflectometry.
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| Title: | Optimization of magnetic reference layer for neutron reflectometry. |
|---|---|
| Authors: | Zubayer, Anton1 (AUTHOR) anton.zubayer@liu.se, Eriksson, Fredrik1 (AUTHOR), Ghafoor, Naureen1 (AUTHOR), Stahn, Jochen2 (AUTHOR), Birch, Jens1 (AUTHOR), Glavic, Artur2 (AUTHOR) |
| Source: | Journal of Applied Crystallography. Aug2025, Vol. 58 Issue 4, p1299-1310. 12p. |
| Subjects: | Neutron reflectivity, Neutron reflectometry, Scattering (Physics), Neutron scattering, Research questions |
| Abstract: | Neutron reflectivity is a powerful technique for probing density profiles in films, with applications across physics, chemistry and biology. However, challenges arise when dealing with samples characterized by high roughness, unknown scattering length density (SLD) with low contrast, very thin layers or complex multi‐layered structures that cannot be uniquely resolved due to the phase problem. Incorporating a magnetic reference layer (MRL) and using polarized neutron reflectivity improves the sensitivity and modelling accuracy by providing complementary information. In this study, we introduce a quantitative means of comparing MRL systems in a model‐free way. We apply this approach to demonstrate that CoTi alloys offer a superior solution as MRLs compared with the commonly used Fe or Ni MRLs. The low nuclear and magnetic scattering length densities of CoTi significantly enhance sensitivity, making it particularly advantageous for soft‐matter research. Furthermore, the tunable Co versus Ti ratio allows for optimization of the SLD to achieve maximum sensitivity, establishing CoTi as a highly effective choice for MRL applications. The applied simulation framework for optimizing MRL sensitivity to a specific materials system and research question is a generic approach that can be used prior to growing the MRL for a given experiment. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Applied Crystallography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 187112487 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Optimization of magnetic reference layer for neutron reflectometry. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zubayer%2C+Anton%22">Zubayer, Anton</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> anton.zubayer@liu.se</i><br /><searchLink fieldCode="AR" term="%22Eriksson%2C+Fredrik%22">Eriksson, Fredrik</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ghafoor%2C+Naureen%22">Ghafoor, Naureen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stahn%2C+Jochen%22">Stahn, Jochen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Birch%2C+Jens%22">Birch, Jens</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Glavic%2C+Artur%22">Glavic, Artur</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Applied+Crystallography%22">Journal of Applied Crystallography</searchLink>. Aug2025, Vol. 58 Issue 4, p1299-1310. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Neutron+reflectivity%22">Neutron reflectivity</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+reflectometry%22">Neutron reflectometry</searchLink><br /><searchLink fieldCode="DE" term="%22Scattering+%28Physics%29%22">Scattering (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+scattering%22">Neutron scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Research+questions%22">Research questions</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Neutron reflectivity is a powerful technique for probing density profiles in films, with applications across physics, chemistry and biology. However, challenges arise when dealing with samples characterized by high roughness, unknown scattering length density (SLD) with low contrast, very thin layers or complex multi‐layered structures that cannot be uniquely resolved due to the phase problem. Incorporating a magnetic reference layer (MRL) and using polarized neutron reflectivity improves the sensitivity and modelling accuracy by providing complementary information. In this study, we introduce a quantitative means of comparing MRL systems in a model‐free way. We apply this approach to demonstrate that CoTi alloys offer a superior solution as MRLs compared with the commonly used Fe or Ni MRLs. The low nuclear and magnetic scattering length densities of CoTi significantly enhance sensitivity, making it particularly advantageous for soft‐matter research. Furthermore, the tunable Co versus Ti ratio allows for optimization of the SLD to achieve maximum sensitivity, establishing CoTi as a highly effective choice for MRL applications. The applied simulation framework for optimizing MRL sensitivity to a specific materials system and research question is a generic approach that can be used prior to growing the MRL for a given experiment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Applied Crystallography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1107/S1600576725004674 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1299 Subjects: – SubjectFull: Neutron reflectivity Type: general – SubjectFull: Neutron reflectometry Type: general – SubjectFull: Scattering (Physics) Type: general – SubjectFull: Neutron scattering Type: general – SubjectFull: Research questions Type: general Titles: – TitleFull: Optimization of magnetic reference layer for neutron reflectometry. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zubayer, Anton – PersonEntity: Name: NameFull: Eriksson, Fredrik – PersonEntity: Name: NameFull: Ghafoor, Naureen – PersonEntity: Name: NameFull: Stahn, Jochen – PersonEntity: Name: NameFull: Birch, Jens – PersonEntity: Name: NameFull: Glavic, Artur IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 00218898 Numbering: – Type: volume Value: 58 – Type: issue Value: 4 Titles: – TitleFull: Journal of Applied Crystallography Type: main |
| ResultId | 1 |
