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Updated: Apr 25, 2026
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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
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Persistent compensated ferrimagnetism in the molecular framework Cr(pyrazine)3.
Frédéric Aribot1, Maja A Dunstan1, Nathan J Yutronkie2
1Department of Chemistry, Technical University of Denmark, Lyngby, Denmark.
Nature Chemistry
|April 23, 2026
Summary
Researchers synthesized Cr(pyrazine)3, a novel molecular framework with a ReO3-type structure. This material exhibits robust compensated ferrimagnetism above room temperature due to coupled magnetic sublattices.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Magnetism
Background:
- Molecular frameworks with ReO3- or perovskite-related structures are known for structural versatility.
- However, achieving strong electronic and magnetic correlations in these systems remains a challenge.
Purpose of the Study:
- To synthesize and characterize a novel molecular framework with enhanced magnetic properties.
- To investigate the magnetic behavior and ground state of the synthesized material.
Main Methods:
- Synthesis of a three-dimensional molecular framework, Cr(pyrazine)3.
- Structural characterization adopting a cubic ReO3-type structure.
- Investigation of magnetic properties, including antiferromagnetic coupling and ferrimagnetic ground state.
Main Results:
- Cr(pyrazine)3 exhibits antiferromagnetic coupling between Cr3+ and radical sublattices.
- A nearly perfectly compensated ferrimagnetic ground state with a small net magnetic moment was achieved.
- Robust compensated ferrimagnetism was observed above room temperature under ambient conditions.
Conclusions:
- Cr(pyrazine)3 is a novel material featuring robust compensated ferrimagnetism.
- The material's unique structure and magnetic coupling lead to stable magnetic compensation over a wide temperature range.
- This discovery opens new avenues for designing magnetic molecular frameworks.
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