Article contents
Anomaly in structural noncentrosymmetry around TN n bulk and nanoscale BiFeO3
Published online by Cambridge University Press: 14 November 2013
Abstract
Using high resolution powder neutron diffraction data, we show that there is a distinct anomaly in the structural noncentrosymmetry around the magnetic transition point TN for bulk and nanoscale BiFeO3. It appears that the structural noncentrosymmetry - which gives rise to the ferroelectric polarization - is suppressed anomalously by ~1% (of the average noncentrosymmetry at above the magnetic transition) in the bulk sample and by ~12% in the nanoscale sample as the magnetic transition is approached from higher temperature. This observation shows that the multiferroic coupling improves in the nanoscale sample which is expected to brighten the application prospects of nanoscale BiFeO3 in nanospintronics-based sensor devices.
PACS Nos. 75.70.Cn, 75.75.-c
- Type
- Technical Articles
- Information
- Copyright
- Copyright © International Centre for Diffraction Data 2013
References
- 2
- Cited by