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Published on: September 27, 2018
A new class of room-temperature multiferroic thin films with bismuth-based supercell structure
Aiping Chen1, Honghui Zhou, Zhenxing Bi
1Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843-3128, USA.
Advanced Materials (Deerfield Beach, Fla.)
|November 28, 2012
Summary
Researchers created a new room-temperature multiferroic material, Bi(3)Fe(2)Mn(2)O(10+δ), by combining BiFeO(3) and BiMnO(3). This material exhibits both ferrimagnetism and remanent polarization at room temperature.
Area of Science:
- Materials Science
- Solid State Physics
- Chemistry
Background:
- Multiferroic materials exhibit multiple ferroic orders simultaneously.
- Room-temperature multiferroics are highly sought after for technological applications.
- Perovskite BiRO(3) materials are known for their interesting magnetic and ferroelectric properties.
Purpose of the Study:
- To synthesize and characterize a novel multiferroic phase through the intergrowth of BiFeO(3) and BiMnO(3).
- To investigate the structural, magnetic, and electric properties of the resulting material.
- To explore the potential for creating room-temperature single-phase multiferroic thin films.
Main Methods:
- Controlled intergrowth of partially miscible BiFeO(3) and BiMnO(3) phases.
- Structural characterization using techniques to confirm the unique supercell (SC) structure.
- Measurement of magnetic and electric properties to confirm simultaneous ferrimagnetism and remanent polarization at room temperature.
Main Results:
- A new multiferroic phase, Bi(3)Fe(2)Mn(2)O(10+δ), with a unique supercell structure was successfully synthesized.
- The SC heterostructures demonstrated simultaneous room-temperature ferrimagnetism and remanent polarization.
- Phase mixing of perovskite BiRO(3) materials offers a pathway to control multiferroic properties.
Conclusions:
- The intergrowth of BiFeO(3) and BiMnO(3) yields a novel room-temperature multiferroic material.
- This discovery opens new avenues for designing single-phase room-temperature multiferroic thin films.
- Controlling phase mixing in BiRO(3) systems is a promising strategy for advanced multiferroic materials.
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