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Structural and Multiferroic Properties of Bi3.4La0.6Ti3O12/CoFe2O4 Composite Thin Films |
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| Authors: | M S Tomar A Charris-Hernández D Barrionuevo A Kumar |
| Affiliation: | 1. Department of Physics, University of Puerto Rico, Mayagüez, Puerto Rico, PR 00681maharajs.tomar@upr.edu;3. Department of Physics, University of Puerto Rico, Mayagüez, Puerto Rico, PR 00681;4. Department of Physics, University of Puerto Rico, San Juan, Puerto Rico, PR 00931 |
| 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. |
| Keywords: | Bi3 4La0 6Ti3O12/CoFe2O4 multilayers multiferroics chemical solution route |