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arXiv · 1006.4664

Structural Changes and Ferroelectric Properties of BiFeO 3 -PbTiO 3 Thin Films Grown via a Chemical Multilayer Deposition Method

Shashaank Gupta·Ashish Garg·Dinesh Chandra Agrawal·Shuvrajyoti Bhattacharjee·Dhananjai Pandey
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Abstract

Thin films of (1-x)BiFeO 3 -xPbTiO 3 (BF-xPT) with x ~ 0.60 were fabricated on Pt/Si substrates by chemical solution deposition of precursor BF and PT layers alternately in three different multilayer configurations. These multilayer deposited precursor films upon annealing at 700°C in nitrogen show pure perovskite phase formation. In contrast to the equilibrium tetragonal structure for the overall molar composition of BF:PT::40:60, we find monoclinic structured BF-xPT phase of M A type. Piezo-force microscopy confirmed ferroelectric switching in the films and revealed different normal and lateral domain distributions in the samples. Room temperature electrical measurements show good quality ferroelectric hysteresis loops with remanent polarization, Pr, of up to 18 μC/cm 2 and leakage currents as low as 10 -7 A/cm 2 .

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Shashaank Gupta, Ashish Garg, Dinesh Chandra Agrawal, Shuvrajyoti Bhattacharjee, Dhananjai Pandey. 2010-06-24. Structural Changes and Ferroelectric Properties of BiFeO 3 -PbTiO 3 Thin Films Grown via a Chemical Multilayer Deposition Method. https://doi.org/10.1063/1.3053773

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