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Synthesis of Lithium Niobate Nanocrystals with Size Focusing through an Ostwald Ripening Process

Resource type
Date created
2018-03-06
Authors/Contributors
Abstract
A simple surfactant assisted solution-phase approach is demonstrated here for the preparation of lithium niobate (LiNbO3) nanoparticles with an average size of 30 nm. This solution-phase process results in the formation of crystalline, uniform nanoparticles of LiNbO3 at 220 °C with an optimal reaction time of 36 h. Advantages of this method also include the preparation of crystalline nanoparticles of LiNbO3 without the need for further heat treatment or the use of an inert atmosphere. The growth of these nanoparticles began with a controlled agglomeration of nuclei. The reaction subsequently underwent a process of oriented attachment and Ostwald ripening, which dominated and controlled the further growth of the nanoparticles. These processes produced single-crystalline nanoparticles of LiNbO3. The average dimensions of the nanoparticles were tuned from 30 to 95 nm by increasing the reaction time of the solvothermal process. The LiNbO3 nanoparticles were characterized using transmission electron microscopy (TEM), selected area electron diffraction (SAED), high resolution TEM, X-ray diffraction, and Raman spectroscopy techniques. The nanoparticles were also confirmed to be optically active for second harmonic generation (SHG). These particles could enable further development of SHG based microscopy techniques.
Document
Identifier
DOI: 10.1021/acs.chemmater.7b05282
Published as
"Synthesis of Lithium Niobate Nanocrystals with Size Focusing through an Ostwald Ripening Process," Ali, R.F.; Gates, B.D., Chemistry of Materials, 2018, 30 (6), 2028-2035. https://doi.org/10.1021/acs.chemmater.7b05282
Publication title
Chemistry of Materials
Document title
Synthesis of Lithium Niobate Nanocrystals with Size Focusing through an Ostwald Ripening Process
Date
2018
Volume
30
Issue
6
First page
2028
Last page
2035
Publisher DOI
10.1021/acs.chemmater.7b05282
Copyright statement
Copyright is held by the author(s).
Scholarly level
Peer reviewed?
Yes
Language
English
Member of collection
Download file Size
118-Gates.pdf 1.13 MB

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