Abstract
Some K2O-TiO2-GeO2 glasses with a large amount of TiO2 contents (15-25 mol%) such as 25K2O-25TiO2-50GeO2 have been prepared, and their electronic polarizability, Raman scattering spectra, and crystallization behavior are examined to clarify thermal properties and structure of the glasses and to develop new nonlinear optical crystallized glasses. It is proposed that the glasses consist of the network of TiO6 and GeO4 polyhedra. The glasses show large optical basicities of Λ = 0.88 - 0.92, indicating the high polarizabity of TiOn (n = 4 - 6) polyhedra in the glasses. K2TiGe3O9 crystals are formed through crystallization in all glasses prepared in the present study. In particular, 20K2O-20TiO2-60GeO2 glass shows bulk crystallization and 18K2O-18TiO2-64GeO2 glass exhibits surface crystallization giving the c-axis orientation. The crystallized glasses show second harmonic generations (SHGs), and it is suggested that the distortion of TiO6 octahedra in K2TiGe3O9 crystals induces SHGs.
| Original language | English |
|---|---|
| Pages (from-to) | 3949-3957 |
| Number of pages | 9 |
| Journal | Journal of Solid State Chemistry |
| Volume | 179 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Dec 2006 |
| Externally published | Yes |
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Keywords
- Crystallization
- Electronic polarizability
- Glass
- KTiGeO
- Raman scattering spectra
- Second harmonic generation
ASJC Scopus subject areas
- Inorganic Chemistry
- Physical and Theoretical Chemistry
- Materials Chemistry
Cite this
Electronic polarizability and crystallization of K2O-TiO2-GeO2 glasses with high TiO2 contents. / Fukushima, T.; Benino, Yasuhiko; Fujiwara, T.; Dimitrov, V.; Komatsu, T.
In: Journal of Solid State Chemistry, Vol. 179, No. 12, 12.2006, p. 3949-3957.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electronic polarizability and crystallization of K2O-TiO2-GeO2 glasses with high TiO2 contents
AU - Fukushima, T.
AU - Benino, Yasuhiko
AU - Fujiwara, T.
AU - Dimitrov, V.
AU - Komatsu, T.
PY - 2006/12
Y1 - 2006/12
N2 - Some K2O-TiO2-GeO2 glasses with a large amount of TiO2 contents (15-25 mol%) such as 25K2O-25TiO2-50GeO2 have been prepared, and their electronic polarizability, Raman scattering spectra, and crystallization behavior are examined to clarify thermal properties and structure of the glasses and to develop new nonlinear optical crystallized glasses. It is proposed that the glasses consist of the network of TiO6 and GeO4 polyhedra. The glasses show large optical basicities of Λ = 0.88 - 0.92, indicating the high polarizabity of TiOn (n = 4 - 6) polyhedra in the glasses. K2TiGe3O9 crystals are formed through crystallization in all glasses prepared in the present study. In particular, 20K2O-20TiO2-60GeO2 glass shows bulk crystallization and 18K2O-18TiO2-64GeO2 glass exhibits surface crystallization giving the c-axis orientation. The crystallized glasses show second harmonic generations (SHGs), and it is suggested that the distortion of TiO6 octahedra in K2TiGe3O9 crystals induces SHGs.
AB - Some K2O-TiO2-GeO2 glasses with a large amount of TiO2 contents (15-25 mol%) such as 25K2O-25TiO2-50GeO2 have been prepared, and their electronic polarizability, Raman scattering spectra, and crystallization behavior are examined to clarify thermal properties and structure of the glasses and to develop new nonlinear optical crystallized glasses. It is proposed that the glasses consist of the network of TiO6 and GeO4 polyhedra. The glasses show large optical basicities of Λ = 0.88 - 0.92, indicating the high polarizabity of TiOn (n = 4 - 6) polyhedra in the glasses. K2TiGe3O9 crystals are formed through crystallization in all glasses prepared in the present study. In particular, 20K2O-20TiO2-60GeO2 glass shows bulk crystallization and 18K2O-18TiO2-64GeO2 glass exhibits surface crystallization giving the c-axis orientation. The crystallized glasses show second harmonic generations (SHGs), and it is suggested that the distortion of TiO6 octahedra in K2TiGe3O9 crystals induces SHGs.
KW - Crystallization
KW - Electronic polarizability
KW - Glass
KW - KTiGeO
KW - Raman scattering spectra
KW - Second harmonic generation
UR - http://www.scopus.com/inward/record.url?scp=33751515122&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33751515122&partnerID=8YFLogxK
U2 - 10.1016/j.jssc.2006.08.035
DO - 10.1016/j.jssc.2006.08.035
M3 - Article
AN - SCOPUS:33751515122
VL - 179
SP - 3949
EP - 3957
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 12
ER -