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Integrated Ferroelectrics
An International Journal
Volume 157, 2014 - Issue 1: Proceedings of International Symposium on Integrated Functionalities (ISIF 2013)
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Original Articles

Structural and Multiferroic Properties of Bi3.4La0.6Ti3O12/CoFe2O4 Composite Thin Films

M. S. TomarDepartment of Physics, University of Puerto Rico, Mayagüez, Puerto Rico, PR00681Correspondence[email protected]
,
A. Charris-HernándezDepartment of Physics, University of Puerto Rico, Mayagüez, Puerto Rico, PR00681
,
D. BarrionuevoDepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico, PR00931
&
A. KumarDepartment of Physics, University of Puerto Rico, Mayagüez, Puerto Rico, PR00681
Pages 63-70 | Received 29 Sep 2013, Accepted 11 Mar 2014, Published online: 16 Jun 2014
 
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Abstract

Bi3.4La0.6Ti3O12 and CoFe2O4 were synthesized by chemical solution route, and Bi3.4La0.6Ti3O12/CoFe2O4 multilayers were deposited by spin coating on Pt substrate. X-ray diffraction of multilayer structures reveals composite-like polycrystalline film. Leakage current is less than 10−5 A at electric field < 90 KV/cm and follows the Ohmic behavior. Dielectric response shows relaxation and the loss (tan δ) is below 3% at 106 Hz. Room temperature ferrroelectric polarization (Pr) = 20.2 μC/cm2 and ferromagnetic memory (Mr) = 46.5 emu/cm3 has been obtained. Co-existence of FE and FM response can be attributed to stress and different permeability and permittivity involved in multilayer structures.

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