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Anomaly in structural noncentrosymmetry around TN n bulk and nanoscale BiFeO3

Goswami, Sudipta and Bhattacharya, Dipten and Iles, Gail N. and Ghosh, Barnali and Prytuliak, Anastasiia A. and Malard, Benoît and Das, Gopes C. and Ouladdiaf, Bachir and Chatterji, Tapan Anomaly in structural noncentrosymmetry around TN n bulk and nanoscale BiFeO3. (2013) Powder Diffraction, 28 (S2). S94-S105. ISSN 0885-7156

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Official URL: https://doi.org/10.1017/S0885715613001115


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.

Item Type:Article
HAL Id:hal-02141804
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > SN Bose National Centre for Basic Sciences (INDIA)
Other partners > Council of Scientific and Industrial Research - CSIR (INDIA)
Other partners > Helmholtz-Zentrum Berlin - HZB (GERMANY)
Other partners > Institut Laue-Langevin - ILL (FRANCE)
Other partners > Jadavpur University (INDIA)
Laboratory name:
Deposited On:28 May 2019 09:14

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