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Synthesis of the Ferroelectric Solid Solution, Pb(Zr1−xTix)O3 on a Single Substrate Using a Modified Molecular Beam Epitaxy Technique

  • Piers Anderson (a1), Samuel Guerin (a2), Brian E. Hayden (a3), Mikael A. Khan (a4), Andrew J. Bell (a5), Yisong Han (a6), Ashu Pasha (a7), Karl R Whittle (a8) and Ian M. Reaney (a9)...

Abstract

High-throughput synthesis of the ferroelectric solid solution Pb(Zr1−xTix)O3 (PZT) on single Pt/Ti/SiO2/Si substrates was demonstrated using a modified molecular beam epitaxy (MBE) system. The PZT films exhibited a phase transition from rhombohehdral (R) to tetragonal (T) symmetry as a function of Zr:Ti ratio, across the substrate diagonal. This was consistent with the presence of a morphotropic phase boundary (MPB) at a Zr:Ti ratio of 0.64:0.36, different from the value of 0.53:0.47 observed for bulk ceramics. All points on the films exhibited ferroelectric hysteresis loops. The results demonstrate the feasibility of high-throughput MBE for deposition of complex ferroelectric oxides, and pave the way for further materials discovery, in particular Pb-free piezoceramics.

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[1] Anderson, P. S., Guerin, S., Hayden, B. E., Khan, M. A., Bell, A. J., Han, Y., Pasha, M., Whittle, K. R. & Reaney, I. M., Applied Physics Letters, 90, 202907 (2007)10.1063/1.2738191
[2] Guerin, S. & Hayden, B. E., Journal of Combinatorial Chemistry, 8, 66 (2006)10.1021/cc050117p

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