Refractive index calculation using the structural properties of La 4Ti9O24 glass

Yasutomo Arai, Keiji Itoh, Shinji Kohara, Jianding Yu

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

A high refractive index of 2.231±0.001 at 1313 nm is achieved in a colorless, transparent spherical La4 Ti9 O24 glass that was prepared by using an aerodynamic levitation furnace. We also investigate the origin of the high refractive index based on the Lines theory. The physical parameters necessary for the theoretical calculations are the averaged nearest-neighbor Ti-O and La-O distances that are deduced by neutron and synchrotron x-ray diffraction measurement and the partial molar volumes of TiO2 and LaO1.5 in the glass. The sum of the calculated TiO2 and LaO1.5 susceptibilities provides a La4 Ti9 O24 glass refractive index of 2.244. This is very close to the experimental refractive index of the glass. In addition, the theoretical calculation results suggest that the oxygen fivefold Ti (TiO5) cluster produces greater susceptibilities than the sixfold Ti (TiO6) cluster in the glass.

Original languageEnglish
Article number094905
JournalJournal of Applied Physics
Volume103
Issue number9
DOIs
Publication statusPublished - 2008
Externally publishedYes

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refractivity
glass
magnetic permeability
levitation
aerodynamics
furnaces
synchrotrons
x ray diffraction
neutrons
oxygen

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Refractive index calculation using the structural properties of La 4Ti9O24 glass. / Arai, Yasutomo; Itoh, Keiji; Kohara, Shinji; Yu, Jianding.

In: Journal of Applied Physics, Vol. 103, No. 9, 094905, 2008.

Research output: Contribution to journalArticle

Arai, Yasutomo ; Itoh, Keiji ; Kohara, Shinji ; Yu, Jianding. / Refractive index calculation using the structural properties of La 4Ti9O24 glass. In: Journal of Applied Physics. 2008 ; Vol. 103, No. 9.
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