Orientated crystallization of fresnoite glass-ceramics by using a thermal gradient

Alternative processes for developing fabric and mineral compositional zoning in intrusive rocks

“…The material science literature contains numerous examples of temperature gradients leading to preferred orientations of crystals (e.g. Gardopee et al 1980;Buchmann and Rettenmayr 2005;Ochi et al 2006;Dantzig and Rappaz 2009), whereas relatively fewer studies exist in the geologic literature (Shore and Fowler 1999;Faure et al 2006). Our observations from experiments indicate that mineral alignment can develop during chemical diffusion driven by a thermal gradient and that fabrics produced by this process are controlled by the orientation of the gradient.…”

The influence of TiO 2 and ZrO 2 on microstructure and crystallization behavior of CRT glass

“…There are many methods by which fresnoite can be obtained e.g. electrochemically induced nucleation or controlled heat treatment [10][11][12][13][14][15]. These kinds of glass-ceramics have excellent pyroelectric properties and remarkable nonlinear optical properties, such as second harmonic generation and photoluminescence [16].…”

Bulk crystallisation of (00l) oriented fresnoite Sr2TiSi2O8 in glass-ceramics of the Sr–Ti–Si–K–B–O system

“…To date, three techniques are suggested in the literature to orient fresnoite crystals during the crystallisation [7]: i) application of a thermal gradient [8]; ii) electrochemical nucleation of the melt [5,[9][10][11] and iii) ultrasonic treatment of the surface of the glass with a suspension containing fresnoite crystals [12].…”