Unravelling the origin of ferromagnetism and critical scaling behavior in orbital altermagnetic candidate CuBr 2 derived lead free Ruddlesden–Popper halide perovskite (PEA) 2 CuBr 4.
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| Title: | Unravelling the origin of ferromagnetism and critical scaling behavior in orbital altermagnetic candidate CuBr 2 derived lead free Ruddlesden–Popper halide perovskite (PEA) 2 CuBr 4. |
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| Authors: | Routh, Sayan1 (AUTHOR) sayanrouth95@gmail.com, Patel, Shubham2 (AUTHOR), Debnath, Tuhin3 (AUTHOR), Mitra, Saikat1 (AUTHOR), Nandy, Snehasish4 (AUTHOR) snehasish@phy.nits.ac.in, Chowdhury, Avijit1,5 (AUTHOR) avijitc@bose.res.in |
| Source: | Nanotechnology. 2026, Vol. 37 Issue 22, p1-12. 12p. |
| Subjects: | Ferromagnetism, Critical exponents, Perovskite, Spintronics, Inorganic compounds, Magnetic transitions, Magnetism |
| Abstract: | A comprehensive understanding of the interplay between lattice structure and magnetic interactions in layered hybrid organic–inorganic metal halide perovskites is essential for guiding their rational design and functional integration into next-generation spintronic devices. Although CuCl 2 -based compounds exhibit superior thermal stability, the recently predicted one-dimensional orbital altermagnet CuBr 2 derived (PEA) 2 CuBr 4 (PECB) remains largely unexplored. A systematic investigation of PECB is carried out to elucidate its critical behavior and the nature of the ferromagnetic (FM)–paramagnetic phase transition, complemented by detailed structural and optical measurements. Different methods were employed to estimate the critical exponents near the paramagnetic to FM phase transition such as modified Arrott plots, the Kouvel–Fisher method, and the scaling hypothesis. The extracted critical exponents, β = 0.263 ± 0.021 , γ = 0.854 ± 0.007 , and δ = 4.327 ± 0.002 , were evaluated through these methods. These critical exponents are consistent with the values obtained from the scaling hypothesis and further validated by the Widom scaling relation, thereby confirming their reliability. Additionally, we examine the origin of ferromagnetism in this class of materials, emphasizing the influence of organic–inorganic coupling and lattice-mediated exchange interactions. The magnetic ground state is elucidated using DFT calculations. Our comprehensive investigation reveals that the halide perovskite PECB exhibits rich and unconventional magnetic behavior, thereby opening new pathways for the rational design and exploration of layered magnetic systems with promising prospects for spintronic applications. [ABSTRACT FROM AUTHOR] |
| Copyright of Nanotechnology is the property of IOP Publishing 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: 194202959 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Unravelling the origin of ferromagnetism and critical scaling behavior in orbital altermagnetic candidate CuBr 2 derived lead free Ruddlesden–Popper halide perovskite (PEA) 2 CuBr 4. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Routh%2C+Sayan%22">Routh, Sayan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sayanrouth95@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Patel%2C+Shubham%22">Patel, Shubham</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Debnath%2C+Tuhin%22">Debnath, Tuhin</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mitra%2C+Saikat%22">Mitra, Saikat</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nandy%2C+Snehasish%22">Nandy, Snehasish</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> snehasish@phy.nits.ac.in</i><br /><searchLink fieldCode="AR" term="%22Chowdhury%2C+Avijit%22">Chowdhury, Avijit</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> avijitc@bose.res.in</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nanotechnology%22">Nanotechnology</searchLink>. 2026, Vol. 37 Issue 22, p1-12. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Ferromagnetism%22">Ferromagnetism</searchLink><br /><searchLink fieldCode="DE" term="%22Critical+exponents%22">Critical exponents</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22Spintronics%22">Spintronics</searchLink><br /><searchLink fieldCode="DE" term="%22Inorganic+compounds%22">Inorganic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+transitions%22">Magnetic transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetism%22">Magnetism</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A comprehensive understanding of the interplay between lattice structure and magnetic interactions in layered hybrid organic–inorganic metal halide perovskites is essential for guiding their rational design and functional integration into next-generation spintronic devices. Although CuCl 2 -based compounds exhibit superior thermal stability, the recently predicted one-dimensional orbital altermagnet CuBr 2 derived (PEA) 2 CuBr 4 (PECB) remains largely unexplored. A systematic investigation of PECB is carried out to elucidate its critical behavior and the nature of the ferromagnetic (FM)–paramagnetic phase transition, complemented by detailed structural and optical measurements. Different methods were employed to estimate the critical exponents near the paramagnetic to FM phase transition such as modified Arrott plots, the Kouvel–Fisher method, and the scaling hypothesis. The extracted critical exponents, β = 0.263 ± 0.021 , γ = 0.854 ± 0.007 , and δ = 4.327 ± 0.002 , were evaluated through these methods. These critical exponents are consistent with the values obtained from the scaling hypothesis and further validated by the Widom scaling relation, thereby confirming their reliability. Additionally, we examine the origin of ferromagnetism in this class of materials, emphasizing the influence of organic–inorganic coupling and lattice-mediated exchange interactions. The magnetic ground state is elucidated using DFT calculations. Our comprehensive investigation reveals that the halide perovskite PECB exhibits rich and unconventional magnetic behavior, thereby opening new pathways for the rational design and exploration of layered magnetic systems with promising prospects for spintronic applications. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nanotechnology is the property of IOP Publishing 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: 10.1088/1361-6528/ae6f22 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Ferromagnetism Type: general – SubjectFull: Critical exponents Type: general – SubjectFull: Perovskite Type: general – SubjectFull: Spintronics Type: general – SubjectFull: Inorganic compounds Type: general – SubjectFull: Magnetic transitions Type: general – SubjectFull: Magnetism Type: general Titles: – TitleFull: Unravelling the origin of ferromagnetism and critical scaling behavior in orbital altermagnetic candidate CuBr 2 derived lead free Ruddlesden–Popper halide perovskite (PEA) 2 CuBr 4. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Routh, Sayan – PersonEntity: Name: NameFull: Patel, Shubham – PersonEntity: Name: NameFull: Debnath, Tuhin – PersonEntity: Name: NameFull: Mitra, Saikat – PersonEntity: Name: NameFull: Nandy, Snehasish – PersonEntity: Name: NameFull: Chowdhury, Avijit IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 06 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 09574484 Numbering: – Type: volume Value: 37 – Type: issue Value: 22 Titles: – TitleFull: Nanotechnology Type: main |
| ResultId | 1 |
