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HomeKey Engineering MaterialsKey Engineering Materials Vol. 943The Synthesis Regimes Effect on Powders and...

The Synthesis Regimes Effect on Powders and Ceramics of MgAl₂O₄ Doped with Cr³⁺

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Abstract:

This work presents the investigation of nanopowders from magnesium aluminum spinel doped with Cr³⁺. Different synthesis conditions were used to determine the influence on lattice parameter. The following synthesis parameters varied: time of calcination, cold pressing and alternative precursor of Cr³⁺. The nanopowders properties were measured by XRD, optical transmission and EDX spectroscopy. The determined average size of synthesized nanoparticles is around 70 nm. Ceramic samples are given by hot pressing and studied by transmission spectroscopy and luminescent spectroscopy. The excitation and emission spectra demonstrates ²E - ⁴A₂ (687 nm), ⁴A₂ - ⁴T₁ (400 nm) and ⁴A₂ - ⁴T₂ (532 nm) transitions.

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Periodical:

Key Engineering Materials (Volume 943)

Pages:

165-170

DOI:

https://doi.org/10.4028/p-ausbx9

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Online since:

March 2023

Authors:

Elena Afanaseva*, Elena Vaishlia, Victor A. Klinkov, Ilya Kolesnikov

Keywords:

Ceramics, Cold Pressing, Hot Pressing, Magnesium Aluminum Spinel, Nanopowders, Solid State Method

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© 2023 Trans Tech Publications Ltd. All Rights Reserved

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