Applications of Smart Material of Li2O-(Nb/Ta)2O5-TiO2 Solid Solution Having a Unique Periodical Structure-Reference-Cited by-同舟云学术

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

Published:2021-01-05 Issue: Volume:1016 Page:1009-1013
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Nakano Hiromi¹

Affiliation:

1. Toyohashi University of Technology

Abstract

In the Li2O-M2O5-TiO2 system, Li1+x-yM1-x-3yTix+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.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.1016.1009.pdf

Reference14 articles.

1. M. E. Villafuerte-Castrejon, J. A. Gracia, E. Cisneros, R. Valenzuela, and A.R. West, New rutile solid solutions Ti1-4xLixM3xO2: M = Nb, Ta, Sb, J. Brit. Ceram. Soc., 83 (1984) 143–145.

2. L. Farber, I. Levin, A. Borisevich, I. E. Grey, R.S. Roth, and P.K. Davies, Structural study of Li1+x-yNb1-x-3yTix+4yO3 solid solutions, J. Solid State Chem., 166 (2002) 81–90.

3. A. Y. Borisevich, and P. K. Davies, Synthesis and dielectric properties of Li1+x-yTa1-x-3yTix+4yO3 M-phase solid solutions, J. Am. Ceram. Soc., 85 (10) (2002) 2487–2491.

4. H. Nakano, S. Suehiro, S. Furuya, and K. Fukuda, Microstructural comparison between Nb- and Ta-systems in Li1+x-yM1-x-3yTix+4yO3 (M = Nb5+, Ta5+) solid solution with superstructure, J. Alloys Compds., 618 (2015) 504–507.

5. A.Y. Borisevich and P.K. Davies, Microwave dielectric properties of Li1+x-yM1-x-3yTix+4yO3 (M = Nb5+, Ta5+) solid solutions, J. Eur. Ceram. Soc., 21 (10-11) (2001) 1719–1722.