Related Experiment Video
Updated: Feb 19, 2026
09:06
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
8.6K
3d-4f coupling and multiferroicity in frustrated Cairo Pentagonal oxide DyMn2O5
S Chattopadhyay1, S Petit2, E Ressouche3
1INAC-MEM, CEA-Grenoble and Université Grenoble Alpes, F-38000, Grenoble, France. ch.sumanta@gmail.com.
Scientific Reports
|November 8, 2017
Summary
Researchers studied multiferroic DyMn2O5, revealing that rare earth anisotropy influences its magnetic structure and ferroelectricity. This finding is crucial for developing next-generation spintronic devices.
Area of Science:
- Solid State Science
- Materials Science
- Condensed Matter Physics
Background:
- Multiferroic materials are key for next-generation spintronic and data storage devices.
- The coupling between coexisting 3d and 4f elements in multiferroics remains poorly understood.
- Dysprosium manganese oxide (DyMn2O5) is a multiferroic material hosting both 3d (Mn) and 4f (Dy) elements.
Purpose of the Study:
- To investigate the role of coupling between 3d and 4f magnetic entities in multiferroic DyMn2O5.
- To elucidate the relationship between magnetic structure, spin excitations, and ferroelectricity in this material.
Main Methods:
- Single crystal neutron diffraction
- Inelastic neutron scattering experiments
Main Results:
- DyMn2O5 exhibits distinct magnetic structures in its high-temperature incommensurate and low-temperature commensurate phases.
- Despite structural differences, spin excitations remain similar, indicating a fragile low-temperature ground state.
- This behavior is attributed to the competition between exchange interactions and 4f magnetic anisotropy.
Conclusions:
- The magnetic structure and ferroelectricity in DyMn2O5 can be precisely controlled by tuning the rare earth's magnetic anisotropy.
- Understanding these interactions is vital for designing advanced multifunctional materials.
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