Anderson, P.S., Guerin, S., Hayden, B.E., Khan, M.A., Bell, A.J., Han, Y., Pasha, A., Whittle, K.R. and Reaney, I.M.
Synthesis of the ferroelectric solid solution, Pb(Zr1-xTix)O-3 on a single substrate using a modified molecular beam epitaxy technique
Applied Physics Letters, 90, (20)
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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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