Applications of Smart Material of Li2O-(Nb/Ta)2O5-TiO2 Solid Solution Having a Unique Periodical Structure

Hiromi Nakano

doi:10.4028/www.scientific.net/MSF.1016.1009

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HomeMaterials Science ForumMaterials Science Forum Vol. 1016Applications of Smart Material of...

Applications of Smart Material of Li₂O-(Nb/Ta)₂O₅-TiO₂ Solid Solution Having a Unique Periodical Structure

Abstract:

In the Li₂O-M₂O₅-TiO₂system, Li_1+x-yM_1-x-3yTi_x+4yO₃(M = Nb, or Ta, 0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.175 (LMT) forms a superstructure, known as smart material. The superstructure is formed by periodical insertion of a corundum-type intergrowth layer of [Ti₂O₃]²⁺ in a matrix having a trigonal structure during the grain growth. To apply this unique structure as a host material of phosphor, new phosphors doped with Mn⁴⁺ion with a red emission colour, which had a broad peak around 685 nm excited by 493 nm. In order to improve the PL intensity, we investigated the compositions, Mn⁴⁺ratio and crystal structure. Results showed that PL intensity was closely related to Mn⁴⁺ ratio and its crystal structure.

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Materials Science Forum (Volume 1016)

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1009-1013

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https://doi.org/10.4028/www.scientific.net/MSF.1016.1009

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Online since:

January 2021

Authors:

Hiromi Nakano*

Keywords:

Anisotropic Structure, Opt Material, Smart Material, Superstructure

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