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Strong magnetoelectric effect in pulse laser deposited [Ba(Zr 0.2 Ti 0.8 )O 3 ‐0.5(Ba 0.7 Ca 0.3 )TiO 3 ]/CoFe 2 O 4 bilayer thin film
Author(s) -
Rani Jyoti,
Kushwaha Varun K.,
Kolte Jayant,
Tomy Chakkalakal V.
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15882
Subject(s) - materials science , multiferroics , pulsed laser deposition , dielectric , thin film , saturation (graph theory) , analytical chemistry (journal) , crystallite , polarization (electrochemistry) , substrate (aquarium) , ferroelectricity , nuclear magnetic resonance , optoelectronics , nanotechnology , metallurgy , chemistry , mathematics , physics , chromatography , combinatorics , oceanography , geology
Polycrystalline bilayer thin film of multiferroic [Ba(Zr 0.2 Ti 0.8 )O 3 ‐0.5(Ba 0.7 Ca 0.3 )TiO 3 ]/CoFe 2 O 4 ([ BZT ‐0.5 BCT ]/ CFO ) has been deposited on Pt/Si (100) substrate using a pulsed laser deposition technique. The dielectric analysis reveals a significant change in the dielectric constant (~39% at a typical frequency of 100 Hz) at room temperature when a magnetic field is applied, in addition to a substantial improvement in the saturation polarization. A low leakage current density (~ 5 × 10 −7 A/cm 2 ) and a high magnetoelectric coupling coefficient (α E ) both in the transverse (~2.085 V/Oe cm) as well as in the longitudinal (~0.708 V/cm Oe) directions, indicate in‐principle usability of this system for multifunctional device applications in thin film form.