Kumari, Mukesh and Diestra, Danilo G. Barrionuevo and Katiyar, Ram and Shah, Jyoti and Kotnala, R. K. and Chatterjee, Ratnamala (2017) Observation of strong magnetoelectric coupling and ferromagnetism at room temperature in Fe substituted ferroelectric BaZr0.05Ti0.95O3 thin films. Journal of Applied Physics , 121 (034101). 034101-1-034101-4. ISSN 0021-8979

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Single phase polycrystalline thin films (similar to 100nm) of BaZr0.05(FexTi1-3x/4)(0.95)O-3, with x = 0 (BZT) and 0.015 (BZFT15), were grown on Pt/TiO2/SiO2/Si substrate using pulsed laser deposition technique. Room temperature ferromagnetism with a remanent magnetization (M-r)similar to 1.1 x 10(-1) emu/cm(3) and a coercive field (H-c) similar to 0.1 kOe was observed in BZFT15 film. The ferroelectric domain switching in both BZT and BZFT15 films is confirmed by piezoresponse force microscopy (PFM). The magnetoelectric coupling coefficient (alpha) measured at room temperature in the BZFT15 film in in-plane magnetized-out of plane polarized configuration (L-T mode) was found to be similar to 165mV/cm Oe. It is argued that the observed ferromagnetism in BZFT15 films arises from the oxygen vacancy (O-v) mediated (Fe3+-O-v-Fe3+) exchange.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s American Institute of Physics.
Subjects: Applied Physics/Condensed Matter
Depositing User: Users 27 not found.
Date Deposited: 07 Dec 2018 06:55
Last Modified: 07 Dec 2018 06:55
URI: http://npl.csircentral.net/id/eprint/2808

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