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Cross coupling between electric and magnetic orders in a multiferroic metal-organic framework
Ying Tian1, Alessandro Stroppa2, Yisheng Chai1
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
Scientific Reports
|October 16, 2014
Summary
Researchers confirmed cross-coupling between electric and magnetic orders in a novel multiferroic metal-organic framework (MOF). This discovery highlights MOFs as promising multiferroic materials with potential magnetoelectric applications.
Area of Science:
- Materials Science
- Solid State Physics
- Chemistry
Background:
- Metal-organic frameworks (MOFs) are emerging as potential multiferroic materials due to the coexistence of electric and magnetic orders.
- Verifying the coupling between these orders in MOFs is crucial for their application.
Purpose of the Study:
- To provide experimental evidence for the cross-coupling between electric and magnetic orders in a multiferroic MOF.
- To investigate the magnetoelectric effects in this material.
Main Methods:
- Synthesis of [(CH3)2NH2]Fe(HCOO)3, a perovskite-structured MOF.
- Measurement of dielectric constant as a function of temperature.
- Observation of direct and converse magnetoelectric effects.
Main Results:
- A distinct hump in the dielectric constant was observed at the magnetic ordering temperature (TN).
- Direct magnetoelectric effect: magnetic field controlled dielectric properties.
- Converse magnetoelectric effect: electric field controlled magnetization.
Conclusions:
- Clear experimental evidence confirms cross-coupling between electric and magnetic orders in the multiferroic MOF [(CH3)2NH2]Fe(HCOO)3.
- This study offers new insights into ferroelectricity origins in MOFs.
- The findings underscore the potential of MOFs as advanced magnetoelectric multiferroic materials.
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