Nanocrystalline patterning of K3Li2Nb5O15 on TeO2 glasses by an excimer laser

Spinodal Decomposition in Tellurite‐Based Glasses Induced by Excimer Laser Irradiation

“…This kind of observation has also been made by us, where the samples were heated with just 10 mJ for 36 min. One can observe here various stages that a glass surface undergoes before forming such periodic line patterns as has been demonstrated in our earlier work 3 . This is ascribed to the interference between the incident light field and the electric field of the bulk electron plasma wave generating a periodic modulation of electron plasma concentration and the structural changes in the glass 13 .…”

“…These tellurite glasses absorb the UV radiation from the excimer laser and undergo an increase in temperature as it is well‐known that all tellurite glasses would undergo total absorption at 248 nm 2 . The increase in temperature Δ T could be determined using the basic formula, where C p is the specific heat, Q the laser energy, ρ the density, and A and t the area and thickness of the sample exposed to the laser radiation, respectively 3 . Using the above formula, the temperature attained by the sample due to the absorption of laser light is found to be above or close to the melting temperatures of the tellurite glasses under study.…”

“…Several glass systems have been prepared by conventional melt‐quenching technique and on subsequent heat treatment resulted in surface or bulk crystallized nano/microcrystal composites. We have demonstrated the creation of self‐organized nanostructures in the form of row of crystallites of K 3 Li 2 Nb 5 O 15 on the surface of TeO 2 –K 3 Li 2 Nb 5 O 15 glass system by irradiating the sample surface with a focused pulsed excimer laser beam of 10 mJ 3 . In the process of carrying out the investigations pertaining to the influence of laser irradiation on the surface and/or bulk features of TeO 2 ‐based glasses, we encountered peculiar surface modifications, which may be of some interest to the glass–ceramic community.…”

“…We have demonstrated the creation of self-organized nanostructures in the form of row of crystallites of K 3 Li 2 Nb 5 O 15 on the surface of TeO 2 -K 3 Li 2 Nb 5 O 15 glass system by irradiating the sample surface with a focused pulsed excimer laser beam of 10 mJ. 3 In the process of carrying out the investigations pertaining to the influence of laser irradiation on the surface and/or bulk features of TeO 2based glasses, we encountered peculiar surface modifications, which may be of some interest to the glass-ceramic community. The basic interest stems from the potential use of the specially designed surface-modified glass-ceramics for a variety of applications.…”

Dielectric properties of (100−x)Li2B4O7–x(Ba5Li2Ti2Nb8O30) glasses and glass nanocrystal composites

“…The properties of these materials could be controlled by the appropriate choice of the glass composition and the heat-treatment conditions. We have been making attempts to design and fabricate borate and tellurite based materials in amorphous/glass phase for possible applications that include capacitor, pyroelectric, ferroelectric and nonlinear-optic devices [3,4].…”