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Composition and Shape Control of Crystalline Ca1–xSrxTiO3 Perovskite Nanoparticles


  • We acknowledge support of this work through the US Department of Energy under contract number DE-AC02-98CH10886 for facility use, the National Science Foundation (CAREER award DMR-0348239 and DMII-0403859) for funding of personnel and supplies, and the donors of the American Chemical Society Petroleum Research Fund. Y. Mao recognizes Sigma Xi for a Grant-in-Aid of Research. SSW thanks 3M for a non-tenured faculty award. We also thank J. Huang from Boston College and J. Quinn of SUNY Stony Brook for their technical assistance with microscopy. Supporting Information is available online from Wiley InterScience or from the author.


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A series of crystalline perovskite nanoparticles (Ca1–xSrxTiO3, 0 ≤ x ≤ 1, see Figure) has been prepared using a simple, scaleable, molten-salt synthesis method. The generated nanoparticles change from cubes to quasispheres with decreasing x values. Typical nanoparticles have sizes between 70 and 110 nm, irrespective of the Sr or Ca content. The strategy is applicable to the nanoscale growth of other complex oxide materials that exhibit interesting electronic and optical phenomena.

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