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Long-range Stripe Nanodomains in Epitaxial (110) BiFeO3 Thin Films on (100) NdGaO3 Substrate.


ABSTRACT: Here, we report the observation of ferroelectric and ferroelastic nanodomains in (110)-oriented BiFeO3 (BFO) thin films epitaxially grown on low symmetric (100) NdGaO3 (NGO) substrate. We observed long range ordering of ferroelectric 109° stripe nanodomains separated by periodic vertical domain walls in as-grown 130 nm thick BFO films. The effect of La0.67Sr0.33CoO3 (LSCO) conducting interlayer on domain configurations in BFO/NGO film was also observed with relatively short range-ordering of stripe domains due to the modified electrostatic boundary conditions in BFO/LSCO/NGO film. Additional studies on B-site doping of Nb ions in BFO films showed change in the domain structures due to doping induced change in lattice anisotropy while maintaining the stripe domain morphology with 109° domain wall. This long-range array of ferroelectric and ferroelastic domains can be useful for optoelectronic devices and ferroelastic templates for strain coupled artificial magnetoelectric heterostructures.

SUBMITTER: Sharma Y 

PROVIDER: S-EPMC5501854 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Long-range Stripe Nanodomains in Epitaxial (110) BiFeO<sub>3</sub> Thin Films on (100) NdGaO<sub>3</sub> Substrate.

Sharma Yogesh Y   Agarwal Radhe R   Phatak Charudatta C   Kim Bumsoo B   Jeon Seokwoo S   Katiyar Ram S RS   Hong Seungbum S  

Scientific reports 20170707 1


Here, we report the observation of ferroelectric and ferroelastic nanodomains in (110)-oriented BiFeO<sub>3</sub> (BFO) thin films epitaxially grown on low symmetric (100) NdGaO<sub>3</sub> (NGO) substrate. We observed long range ordering of ferroelectric 109° stripe nanodomains separated by periodic vertical domain walls in as-grown 130 nm thick BFO films. The effect of La<sub>0.67</sub>Sr<sub>0.33</sub>CoO<sub>3</sub> (LSCO) conducting interlayer on domain configurations in BFO/NGO film was al  ...[more]

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