Phase transition of LaAlO3 nanocrystal enhanced optical linear& third order nonlinear and dielectric properties of glasses
Source abstract
Abstract
The third-order nonlinearity is an important and widely used optical property in optoelectronic devices. In this study, the phase transition of LaAlO 3 in glass and the same influence on glass structure, optical linear& nonlinear, and electric properties were investigated through various techniques such as nuclear magnetic resonance, Transmission electron microscopy, X-ray photoelectron microscopy, etc. The phase transition from cubic to distorted rhombohedral LaAlO 3 was verified and computer simulation based on density functional theory. Phase transition yielded TeO 4→TeO 3, AlO 6→AlO 4, and BO 4→BO 3 conversion and non-bridging oxygen in the glass network. Such modifications greatly red-shifted the absorption edge and enhanced the nonlinear susceptibility x (3) , refractive index, and electric conductivity σ as well. The 10%LAO glass exhibited giant x (3) = 9.26×10 −7 esu and σ= 9.22×10 −8 Ω/cm which is 3-folds and 9-folds to that of the host glass, respectively. The obtained value was superior to works of literature and is promising for nonlinear photonics applications.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Crystal Structures and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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