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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

agnetism in a 2D Hybrid Ruddlesden-Popper Perovskite through Charge Redistribution Driven by an Organic Functional Space

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Tofanello, A. [1] ; Freitas, A. L. M. [1] ; de Queiroz, T. B. [1] ; Bonadio, A. [1] ; Martinho, H. [1] ; Souza, J. A. [1]
Total Authors: 6
[1] Fed Univ ABC UFABC, Ctr Nat & Human Sci CCNH, BR-09210580 Santo Andre, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Journal of Physical Chemistry Letters; v. 13, n. 6, p. 1406-1415, FEB 17 2022.
Web of Science Citations: 0

Two-dimensional Ruddlesden-Popper (RP) perovskites are emerging materials offering great synthetic versatility and remarkable features due to the tunability of their crystal structure. We present a novel strategy to provide magnetism in a 2D RP perovskite using histidine molecules as a spacer, which could induce charge rebalancing at the interface of the inorganic layer. We observe that the amide and imidazole groups are close to Pb ions. The interaction with the imidazole indicates that this functional group, possibly assisted by the carboxyl close to the vicinity of the amine terminal, is inducing charge rearrangement from Pb2+ to paramagnetic Pb3+ ions, resulting in a positive magnetic moment. This magnetized 2D hybrid perovskites can be classified as a novel class of promising materials showing a magnetic moment at their interface, which may result in intriguing physical properties due to a delicate balance between magnetism and a quantum well confinement effect in the inorganic layer. (AU)

FAPESP's process: 18/15682-3 - Synthesis and Physical Properties Characterization of Micro/Nanostructured Semiconducting Materials
Grantee:José Antonio Souza
Support Opportunities: Regular Research Grants
FAPESP's process: 18/14181-0 - Synthesis, characterization and computational simulation of hybrid APbX3 (a = CS and CH3NH3; X = i, CL e Br) perovskites
Grantee:Ariany Bonadio
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 20/09563-1 - Synthesis and characterization of CH3NH3PbX3 perovskite films
Grantee:André Luiz Martins de Freitas
Support Opportunities: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 17/02317-2 - Interfaces in materials: electronic, magnetic, structural and transport properties
Grantee:Adalberto Fazzio
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 20/13466-1 - Design, synthesis and characterization of molecular systems for light harvesting and charge separation
Grantee:Thiago Branquinho de Queiroz
Support Opportunities: Research Grants - Young Investigators Grants