New Low Temperature Processing of Sol-Gel SrBi₂Ta₂O₉ Thin Films

Abstract

We propose a method to calculate percolation thresholds pE and their error bars Apc of two-dimensional (2D) lattices. The characteristic feature of our method is an efficient extraction of information from the results of Monte Carlo (MC) simulations. We apply this method to some ZD systems such as a square, KagomC and dice lattice, Penrose tiling and a Penrose dual lattice. Our method enables us to estimate thresholds very accurately even when we use the MC data obtained from fairly small sizes. For instance, we achieve three significant figures for pc from the MC data obtained from lattices with sizes less than 300 x 300 and the increment 0.002 of p.

Formation and micro-Raman spectroscopic study of Aurivilius and fluorite-type SrBi2Nb2O9 nanocrystallites obtained using an ‘amorphous citrate’ route

“…Compared to other Bi-layered perovskite oxides, such as SrBi 2 Ta 2 O 9 (SBT), 9,10 SBN offers the advantage of a lower preparation temperature. However, the nucleation process of SBN powders is not well known.…”

Thin films of layered-structure (1−x)SrBi2Ta2O9−xBi3Ti(Ta1−yNby)O9 solid solution for ferroelectric random access memory devices

“…6 Several attempts have been made to improve the film microstructure and, hence, the ferroelectric properties at lower annealing temperatures by either making the Sr/Bi/Ta atomic ratio slightly off-stoichiometric or annealing the films under low oxygen pressure conditions. 7,8 The problem of pyrochlore phase formation was eliminated by using the modified metalorganic solution deposition ͑MOSD͒ technique which provided pyrochlore free crystalline SrBi 2 Ta 2 O 9 thin films even at a low annealing temperature of 600°C. 9 However, no well-defined approach has been established to solve the problems of high processing temperature, low P r , and low T c .…”

Synthesis and characterization of nanocrystalline SrBi2Nb2O9 ferroelectric ceramics using TEA as the polymeric matrix

“…8,9 The phase formation temperature, chemical homogeneity, phase purity and electrical properties of multicomponent electroceramic materials like SBN and SBT are highly dependent on the cation homogeneity in the oxide precursor. 10 In this respect the sol-gel synthesis, 9,[11][12][13][14] and the Pechini-type polymerizable complex (PC) 15 are extremely useful. Unfortunately, the nonaqueous based solution methods (i.e.…”