Origin of magnetic anisotropy and spiral spin order in multiferroic BiFeO<sub>3</sub>

Zhang, J. T.; Lü, Xiaomei; Zhou, Jian; Sun, Hongbo; Su, Jie; Ju, Changcheng; Huang, Fengzhen; Zhu, Jinsong

doi:10.1063/1.4729555

Cited by 33 publications

(19 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Theoretical results further confirm this inference. First, dependence of spontaneous magnetization on the rotation angle of FeO 6 octahedron around [111] direction is analyzed by first principles calculation29. We fix the positions of cations and change the coordinates of oxygen ions to obtain different rotation of FeO 6 octahedron, and then calculate the spontaneous magnetization under different rotation angles.…”

Section: Resultsmentioning

confidence: 99%

“…3 (b) shows that the magnetization per unit cell increases with the increased angle, indicating that local ferromagnetism of BFO can be increased by the increased rotation distortion of FeO 6 octahedron through the strengthened DM interaction. Second, based on the spherical particle model, the macroscopic magnetization are calculated as a function of particle size according to the method given in our former paper29. For the 62 nm BFO particles, the ferromagnetism of DM type is calculated by first principles calculation as mentioned above supposing the rotation angle increases by 2° from 12.8° – that reported for bulk BFO ceramics at room temperature30.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Huang

Wang

Lü

et al. 2013

Sci Rep

246

148

View full text Add to dashboard Cite

Size effect of multiferroics is important for its potential applications in new type miniaturized multifunctional devices and thus has been widely studied. However, is there special size effect in the materials with spiral modulated spin structure (such as BiFeO3)? It is still an issue to be investigated. In this report, structural, magnetic and magnetoelectric coupling properties are investigated for sol-gel prepared BiFeO3 nanoparticles with various sizes. It is found that a structural anomaly arises for the particles with size close to the 62 nm period of the spiral modulated spin structure, which induces an obviously increased ferromagnetism. In addition, large magnetoelectric coupling effect is observed in 62 nm BiFeO3 nanoparticles. Our result provides another insight into the size effect of BiFeO3, and also a clue to the magnetic structure at nanoscale.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Huang

Wang

Lü

et al. 2013

Sci Rep

246

148

View full text Add to dashboard Cite

show abstract

“…There are only few single-phase magnetoelectric materials at room temperature. One of them is the bismuth ferrite, BiFeO 3 (BFO) 5 . BFO is an archetypical ferroelectric multifunctional oxide with rhombohedral distorted perovskite structure that belongs to the R3c space group.…”

Section: Introductionmentioning

confidence: 99%

Control of Multiferroic properties in BiFeO3 nanoparticles

Carranza-Celis

Cardona-Rodríguez

Narváez

et al. 2019

Sci Rep

View full text Add to dashboard Cite

BiFeO 3 (BFO) nanoparticles (NPs) were synthesized using the sol-gel method at different calcination temperatures from 400 °C to 600 °C. XRD studies have confirmed that all BFO NPs show distorted rhombohedral crystals that match the R3c space group. We found evidence of local structural strain that develops with increasing particle size as suggested by TEM and Raman spectroscopy measurements. Magnetic measurements suggest that NPs have two distinct regimes: a ferromagnetic-like one at low temperatures and a superparamagnetic-like one at room temperature. The crossover temperature increases with NPs size, suggesting a size-dependent blocking magnetic regime. Similarly, local piezoelectric measurements at room temperature in single NP have confirmed a ferroelectric order with a NP size-dependent d 33 coefficient. An analysis of both the ferroelectric and the magnetic results suggest that ferromagnetism and ferroelectricity coexist at room temperature in NPs. Our results lead to the possibility of tailoring the ferroic order in multifunctional materials by means of NP size.

show abstract

“…Currently, large spontaneous polarization of ~100 μC cm −2 has been reported in films and single crystals [2,6]. However, its ferromagnetism in macroscopic size is weak due to its G-type canted antiferromagnetic (AFM) along with a long-range cycloidal spatially modulated spiral spin structure [7]. Thus, the coupling effect between the ferroelectric and ferromagnetic orders is very weak, which limits its applications in the field of multiferroic devices.…”

Section: Introductionmentioning

confidence: 99%

Room temperature multiferroic and magnetodielectric properties in Sm and Sc co-doped BiFeO₃ceramics

Wang

Pang

Zhang

et al. 2015

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

In this work, Sm and Sc co-doped Bi 1−x Sm x Fe 1−y Sc y O 3 (x = 0.00-0.20; y = 0.03) ceramics are fabricated by a rapid liquid phase sintering method, in order to develop single-phase multiferroics with large magnetization and polarization. X-ray diffraction and Raman spectroscopic studies reveal that the ceramics are single-phase with a structural transition from rhombohedral to orthorhombic structures near x = 0.15. Electric and magnetic measurement results indicate that the transition significantly enhances the multiferroic properties, which stems from the Sm/Sc doping induced collapse of space-modulated spin structure and internal structural distortion. At an optimized composition of Bi 0.85 Sm 0.15 Fe 0.97 Sc 0.03 O 3 (x = 0.15), a remanent polarization of 16.5 μC cm −2 , a magnetization 0.2020 emu g −1 , and a magnetodielectric effect of 0.46% can be obtained. These results clearly demonstrate a potential application for Sm/Sc doped BiFeO 3 ceramics in the field of multiferroic devices.

show abstract

Origin of magnetic anisotropy and spiral spin order in multiferroic BiFeO₃

Cited by 33 publications

References 36 publications

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Control of Multiferroic properties in BiFeO3 nanoparticles

Room temperature multiferroic and magnetodielectric properties in Sm and Sc co-doped BiFeO₃ceramics

Contact Info

Product

Resources

About

Origin of magnetic anisotropy and spiral spin order in multiferroic BiFeO3

Cited by 33 publications

References 36 publications

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Peculiar magnetism of BiFeO3 nanoparticles with size approaching the period of the spiral spin structure

Control of Multiferroic properties in BiFeO3 nanoparticles

Room temperature multiferroic and magnetodielectric properties in Sm and Sc co-doped BiFeO3ceramics

Contact Info

Product

Resources

About

Origin of magnetic anisotropy and spiral spin order in multiferroic BiFeO₃

Room temperature multiferroic and magnetodielectric properties in Sm and Sc co-doped BiFeO₃ceramics