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Updated: Jun 8, 2025
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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Strain-affected ferroelastic domain walls in RbMnFe charge-transfer materials undergoing collective Jahn-Teller
Marius Hervé1,2, Shintaro Akagi3, Laurent Guérin1,2
1Univ Rennes, CNRS, IPR (Institut de Physique de Rennes) - UMR 6251 35000 Rennes France marius.herve@univ-rennes.fr eric.collet@univ-rennes.fr.
RSC Advances
|November 5, 2024
Summary
Rubidium manganese hexacyanoferrate materials show phase transitions due to Jahn-Teller distortion. This study reveals three ferroelastic tetragonal domains and their strain distribution in these functional materials.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- Rubidium manganese hexacyanoferrate (RbMn[Fe(CN)6]·zH2O) exhibits diverse functionalities.
- These arise from bistability between high-temperature cubic and low-temperature tetragonal phases.
- Jahn-Teller distortion drives the cubic-to-tetragonal ferroelastic phase transition.
Purpose of the Study:
- Investigate ferroelastic domain coexistence in RbMn[Fe(CN)6]·zH2O.
- Quantify the spatial extent of strain around domain walls.
- Understand the structural basis of material functionality.
Main Methods:
- X-ray diffraction (XRD) was employed.
- Analysis focused on identifying and characterizing ferroelastic domains.
- Strain distribution was estimated from diffraction data.
Main Results:
- Three types of ferroelastic tetragonal domains were identified.
- The spatial extension of strain around domain walls was estimated.
- Strain fields associated with domain walls occupy approximately 30% of the crystal volume.
Conclusions:
- The coexistence of multiple ferroelastic domains is confirmed.
- Domain wall strain significantly impacts material properties.
- Understanding domain structure is crucial for optimizing charge-transfer functionalities.
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