TY - JOUR
T1 - Effect of melt temperature on the structure of BaO-TiO 2-GeO 2 glass
AU - Masai, Hirokazu
AU - Hamaguchi, Katsumi
AU - Iwasaki, Kenichiro
AU - Takahashi, Yoshihiro
AU - Ihara, Rie
AU - Fujiwara, Takumi
N1 - Funding Information:
This work is partially supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sport and Culture, Japan , and the Nippon Sheet Glass Foundation for Materials Science and Engineering .
PY - 2012/12
Y1 - 2012/12
N2 - We have examined the dependence of the structure of BaO-TiO 2-GeO 2 (BTG) glass on the temperature at which the BTG glass melt is held in the molten state (called the "melt temperature" in the present paper). The absorption coefficient and refractive index of the BTG glass increase with increasing melt temperature because of the reductive conditions. During melting at 1550°C, Ti 3+ and GeE′ centers are generated together with the formation of TiO 5 units. We conclude that the yellow coloration observed in the BTG glass prepared at higher melt temperatures is due to the generated Ge 2+. It is expected that the local structures of the glass generated at high melt temperatures will affect the crystallization behavior to increase the second-order optical nonlinearity of the glass-ceramic material.
AB - We have examined the dependence of the structure of BaO-TiO 2-GeO 2 (BTG) glass on the temperature at which the BTG glass melt is held in the molten state (called the "melt temperature" in the present paper). The absorption coefficient and refractive index of the BTG glass increase with increasing melt temperature because of the reductive conditions. During melting at 1550°C, Ti 3+ and GeE′ centers are generated together with the formation of TiO 5 units. We conclude that the yellow coloration observed in the BTG glass prepared at higher melt temperatures is due to the generated Ge 2+. It is expected that the local structures of the glass generated at high melt temperatures will affect the crystallization behavior to increase the second-order optical nonlinearity of the glass-ceramic material.
KW - A. Glasses
KW - A. Oxides
KW - D. Optical properties
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U2 - 10.1016/j.materresbull.2012.08.058
DO - 10.1016/j.materresbull.2012.08.058
M3 - Article
AN - SCOPUS:84868205304
SN - 0025-5408
VL - 47
SP - 4065
EP - 4070
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 12
ER -