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Updated: Jun 17, 2026
08:12
Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
Organic ammonium flexibility modulated phase-transition behaviour in 3D perovskite-like mixed-valence iron complexes
Chang-Lei Ma1, Chang Li1, Jia-Yue Sun1
1TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China. zhaojp@tjut.edu.cn.
Chemical Communications (Cambridge, England)
|June 16, 2026
Summary
Novel 3D antiferromagnets were synthesized using oxalate modification of formate perovskites. This structural change influences their phase transition properties.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- Formate perovskites are a class of materials with interesting magnetic and structural properties.
- Modifying their structure can lead to new functionalities.
- Topological materials and antiferromagnets are areas of active research.
Purpose of the Study:
- To synthesize novel 3D antiferromagnetic materials.
- To investigate the effect of oxalate incorporation on the structure and properties of formate perovskites.
- To explore the relationship between structural modifications and phase transitions.
Main Methods:
- Synthesis of novel perovskite-like compounds using oxalate and formate precursors.
- Structural characterization using X-ray diffraction.
- Investigation of magnetic properties and phase transitions.
Main Results:
- Successful synthesis of novel perovskite-like cai topological 3D antiferromagnets with the formula [A]2[FeIIIFe2II(HCOO)7(C2O4)].
- Oxalate incorporation modified the connectivity of the formate perovskite framework.
- Observed changes in structural freedom and phase transition behavior due to reduced π-conjugated systems.
Conclusions:
- Oxalate modification is an effective strategy to create new perovskite-based antiferromagnetic materials.
- Structural adjustments influence the phase transition properties of these materials.
- The synthesized compounds represent a new class of cai topological 3D antiferromagnets.
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