Abstract
The magnetic properties and exchange bias of the heterostructures of a ferroelectric-antiferromagnetic room-temperature multiferroic BiFeO3 (BFO) and a ferromagnetic La2/3Sr1/3MnO3 (LSMO), grown on SrTiO3 (STO) substrate using pulsed laser (PLD) deposition technique, as a function of temperature are explored. The irreversible behaviour of temperature-dependent field cooled (FC) and zero-field cooled (ZFC) magnetization curves, with blocking temperature (TB) ~250 K, and exponential decay of coercive field (HC) below TB, reveal a spin-glass like state in BFO/LSMO heterostructure. The exchange bias is observed in as-grown as well as electrically poled BFO in BFO/LSMO which diminishes above the blocking temperature. A considerable impact of electrical poling on the magnetic properties and exchange bias is noticed in the BFO/LSMO heterostructure. In the proposed model, the coupled ferroelectric/antiferromagnetic orders in BFO along with the inflection of exchange interactions between Fe3+ and Mn3+/4+ in the vicinity of the interface due to the movement of Fe3+ in BFO relative to Mn3+/4+ in LSMO during the ferroelectric polarization switching is the key factor that strongly influences the magnetic properties and exchange bias BFO/LSMO heterostructure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
