Impurity Influence on Soft Mode in SrTiO&lt;sub&gt;3&lt;/sub&gt;

Monodispersed strontium titanate nanoparticles were prepared and studied in detail. It is found that ~10 nm as-prepared stoichiometric nanoparticles are in a polar structural state (with possibly ferroelectric properties) over a broad temperature range. A tetragonal structure, with possible reduction of the electronic hybridization is found as the particle size is reduced. In the 10 nm particles, no change in the local Ti-off centering is seen between 20 and 300 K. The results indicate that nanoscale motifs of SrTiO 3 may be utilized in data storage as assembled nano-particle arrays in applications where chemical stability, temperature stability and low toxicity are critical issues.

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Polar state in freestanding strontium titanate nanoparticles

Tyson

Tian

Croft

et al. 2014

Applied Physics Letters

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Impurity Influence on Soft Mode in SrTiO<sub>3</sub>

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Polar state in freestanding strontium titanate nanoparticles

Polar state in freestanding strontium titanate nanoparticles

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