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The PrAlO3−Pr2O3 Eutectic, its Microstructure, Instability, and Luminescent Properties

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    The PrAlO3−Pr2O3 Eutectic, its Microstructure, Instability, and Luminescent Properties
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    Institute of Electronic Materials Technology, ul. Wolczynska 133, 01-919 Warsaw, Poland, Materials Science Department, Warsaw University of Technology, ul. Wołoska 141, 02-507 Warsaw, Poland, and Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland
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    Chemistry of Materials

    Cite this: Chem. Mater. 2007, 19, 9, 2195–2202
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    https://doi.org/10.1021/cm063000s
    Published April 5, 2007
    Copyright © 2007 American Chemical Society
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    Abstract

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    The praseodymium-aluminum perovskite−praseodymium oxide, PrAlO3−Pr2O3, eutectic has been studied. The growth of the eutectic by the micro-pulling down method is presented. The PrAlO3−Pr2O3 is not air-stable. The cause of the eutectic instability is the instability of the Pr2O3 phase. When exposed to air, the Pr2O3 phase changes into a new compound having a hexagonal unit cell with the lattice parameters a = b = 6.455(1) Å, c = 11.322(4) Å. The PrAlO3−Pr2O3 eutectic grows with a regular complex microstructure. The luminescence spectra are presented for both the eutectic and the new phase generated by exposing the eutectic to air.

    Copyright © 2007 American Chemical Society

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    *

     Corresponding author. E-mail:  [email protected]. Tel:  48 22 8349949.

    †

     Institute of Electronic Materials Technology.

    ‡

     Materials Science Department, Warsaw University of Technology.

    §

     Institute of Microelectronics and Optoelectronics, Warsaw University of Technology.

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    Chemistry of Materials

    Cite this: Chem. Mater. 2007, 19, 9, 2195–2202
    Click to copy citationCitation copied!
    https://doi.org/10.1021/cm063000s
    Published April 5, 2007
    Copyright © 2007 American Chemical Society
    Request reuse permissions

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