Glass–Ceramics: Engineering Principles and Applications

Sakamoto, Akihiko; Yamamoto, Shigeru

doi:10.1111/j.2041-1294.2010.00027.x

Cited by 90 publications

(64 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Basically, if the size of the nanodomains is much less than the wavelength of the incident light (typically roughly <70-100 nm, in the visible range), the material appears transparent. Although elaborate and complex theories have been developed recently in order to predict precisely the critical particle size ensuring transparency, [ 45,46 ] we limited our approach to the general Rayleigh-Gans-Debye theory here as it appeared suffi cient to explain the general transparency behaviour of our materials. In such a system, the refractive index evolution (of both the matrix and/or the separated nanophase) does not seem to have much effect compared to the size of the nanostructure, which is the major factor governing the transparency.…”

Section: Discussionmentioning

confidence: 99%

Tuneable Nanostructuring of Highly Transparent Zinc Gallogermanate Glasses and Glass‐Ceramics

Chenu

Véron

Genevois

et al. 2014

Advanced Optical Materials

View full text Add to dashboard Cite

routes [ 9,10 ] have been recently reported. Technical challenges remain to produce these transparent ceramic materials (complicated and time-consuming procedures to avoid porosity, [ 11 ] limited compositions, segregation of doping agents, etc.). Many of these obstacles can be avoided via the use of glass-ceramic technology. [ 12 ] Therefore, the development of transparent glassceramics is of great interest for many promising optical applications [ 13 ] (solar concentrators, [ 14 ] optical memory media, [ 15 ] telescope mirrors, [ 16 ] amplifi ers, [ 17 ] electrooptical devices [ 18 ] ). Unlike single crystals and polycrystalline sintered ceramics, glass-ceramic materials offer considerable advantages such as a wider range of accessible chemical compositions, fabrication of complex shapes, and largescale production by fast and cost-effi cient glass-forming processes. The absence of porosity, control of the microstructure, and high transparency allow a large variety of optical glass-ceramics to be designed and commercialized.Glass-ceramic technology is generally based on the controlled crystallization of glass. [ 12 ] According to the Rayleigh-GansDebye [ 19 ] and Hendy theories, [ 20 ] the retention of transparency during glass crystallization typically requires a homogeneous distribution of nanoscale crystals in the glass-ceramic material to minimize light scattering. Nucleating agents (such as ZrO 2 and TiO 2 ) are thus often added in the parent glass to produce, by heat treatment, uniformly dispersed nanocrystals. [ 21 ] Nevertheless, a few exceptions with large crystal sizes (β-quartz- [ 16 ] and Na 2 O-CaO-SiO 2 -based glass-ceramics [ 22 ] ) have been reported, and their transparency is directly linked to a very small refractive index difference between the amorphous and crystalline phases. Much attention has been devoted to transparent silicate glass-ceramics, which often present low thermal expansion, thermal stability, and high transparency in both visible and near-infrared ranges. [ 12,16 ] However, silicatebased glass-ceramics present a high phonon energy, which considerably limits their transparency in the infrared range and therefore their applications in this domain. The development of oxyfl uoride [23][24][25][26] and chalcogenide [ 27,28 ] glass-ceramics has extended the transparency toward the infrared range. These materials offer a real alternative allowing access to applications in telecommunications [ 25,26,29 ] (up-conversion devices, waveguide amplifi ers), although their poor chemical durability and complex fabrication (synthesis under a controlled New nanostructured gallogermanate-based glass materials exhibiting high transparency in the visible and infrared regions are fabricated by conventional melt-quenching. These materials can accommodate wide oxide compositions and present nanoscale phase separation, in the form of droplets well separated from the germanate matrix. The size of the nanostructures can be tailored depending on the composition. A single heat treatment then allows select...

show abstract

Section: Discussionmentioning

confidence: 99%

Tuneable Nanostructuring of Highly Transparent Zinc Gallogermanate Glasses and Glass‐Ceramics

Chenu

Véron

Genevois

et al. 2014

Advanced Optical Materials

View full text Add to dashboard Cite

show abstract

“…Heat treatment condition such as temperature, time, and atmosphere is also important for the control of nucleation and crystal growth rates in glasses. Usually, glass-ceramics are synthesized through heat treatment of glasses in an electric furnace, and various functional glass-ceramics being available for practical applications have been developed (Beall and Pinckney, 1999;Sakamoto and Yamamoto, 2010;HÖland and Beall, 2012).…”

Section: Introductionmentioning

confidence: 99%

Nucleation and Crystal Growth in Laser-Patterned Lines in Glasses

Komatsu

Honma

2016

Front. Mater.

View full text Add to dashboard Cite

Laser-induced crystallization is a new method for the design and control of the crystallization of glasses and opens a new door in the study of nucleation and crystal growth in glasses. Nonlinear optical Sm-doped β-BaB2O4 (β-BBO) crystal lines were patterned by continuous-wave Yb:YVO4 fiber laser (wavelength 1080 nm) in 8Sm2O3-42BaO-50B2O3 glass as an example, and nucleation and crystal growth behaviors in the laser-patterned bending and crossing lines were examined. It was confirmed that the growth of c-axis oriented β-BBO crystals follows along the laser scanning direction even if laser scanning direction changes. The model of self-organized homo-epitaxial crystal growth was demonstrated for the orientation of β-BBO crystals at the crossing point of two lines, in which the first crystal line at the crossing point acts as nucleation site for the second crystal line. This study proposes a new crystal growth technology.

show abstract

“…Formation and crystallization of glasses are unique and important methods for material design and include various important topics in solid state chemistry, e.g., kinetics of transformation from glassy state to crystalline state and formation of metastable crystalline phases. Various optically transparent materials containing nanocrystals have been developed by controlling crystal nucleation and growth in glasses and also by designing glass system and composition [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%