Weak ferromagnetism and magnetoelectric coupling in bismuth ferrite

By C. Ederer, N. Spaldin. 2004

1,229 citations recorded by the source corpus.

We analyze the coupling between the ferroelectric and magnetic order parameters in the magnetoelectric multiferroic $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}$ using density functional theory within the local spin density approximation (LSDA) and the $\mathrm{LSDA}+\mathrm{U}$ method. We show that weak ferromagnetism of the Dzyaloshinskii-Moriya type occurs in this material, and we analyze the coupling between the resulting magnetization and the structural distortions. We explore the possibility of electric-field-induced magnetization reversal and show that, although it is unlikely to be realized in $\mathrm{Bi}\mathrm{Fe}{\mathrm{O}}_{3}$, it is not in general impossible. Finally, we outline the conditions that must be fulfilled to achieve switching of the magnetization using an electric field.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Oceanography

View Paper: https://www.semanticscholar.org/paper/59bdeb2eb55dd6098d7a9d4d76438f61b09ef387

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Condensed Matter Physics

1. Ramamoorthy Ramesh
2. G. Catalán
3. N. Spaldin
4. Y. Chu
5. Zhifeng Ren
6. C. Ederer
7. S. Cheong
8. S. Dong

In Electronic, Optical and Magnetic Materials

1. Ramamoorthy Ramesh
2. G. Catalán
3. N. Spaldin
4. L. Martin
5. Y. Chu
6. Zhifeng Ren
7. S. Dong
8. S. Cheong

In Oceanography

1. Ramamoorthy Ramesh
2. Y. Chu
3. N. Spaldin
4. C. Ederer
5. S. Dong

Citations in the corpus

• Electrical control of antiferromagnetic domains in multiferroic BiFeO3 films at room temperature (2006, result): “have confirmed the existence of a large ferroelectric polarization, as well as a small magnetization, both of which are consistent with theoretical prediction”
• Multiferroic materials and magnetoelectric physics: symmetry, entanglement, excitation, and topology (2015, background): “Although a symmetry consideration asserts a forbidden direct 180◦ switching of the Dzyaloshinskii-Moriya vector by ferroelectric polarization [27], a two-step switching process of the polarization can lead to the switching of Dzyaloshinskii-Moriya vector and thus a deterministic reversal of the net ”