TY - JOUR
T1 - An x-ray photoelectron spectroscopic study of the chemical states of fluorine atoms in calcium silicate glasses
AU - Hayakawa, Satoshi
AU - Nakao, Akira
AU - Ohtsutki, Chikara
AU - Osaka, Akiyoshi
AU - Matsumoto, Shuji
AU - Miura, Yoshinari
N1 - Funding Information:
We are grateful to S. Matsumoto, Okayama University for technical support on XPS measurements. This work was supported by Grant-in-Aid for Scientific Research on Priority Areas, the Ministry of Education, Science, Culture and Sports (Japan), No. 07239235.
PY - 1998/3
Y1 - 1998/3
N2 - X-ray photoelectron spectroscopy has been used to examine the chemical states of fluorine in the glasses of composition xCaF2(50 - x)CaO · 50SiO2 (x = 5, 10, 15, 20, and 25 mol%) and xCaF2(50 - x/2)CaO(50 - x/2)SiO2 (x = 5, 10, 15, and 20 mol%). The analysis of the F1s spectra indicated that Ca2+ and F- ions introduced as CaF2 are favorably located among the Si-O skeleton forming Ca-F clusters. The fraction of the bridging and nonbridging oxygen atoms was derived from the O1s spectra, and the network of the fluorine-containing glasses was concluded to depend only on the ratio CaO/SiO2.
AB - X-ray photoelectron spectroscopy has been used to examine the chemical states of fluorine in the glasses of composition xCaF2(50 - x)CaO · 50SiO2 (x = 5, 10, 15, 20, and 25 mol%) and xCaF2(50 - x/2)CaO(50 - x/2)SiO2 (x = 5, 10, 15, and 20 mol%). The analysis of the F1s spectra indicated that Ca2+ and F- ions introduced as CaF2 are favorably located among the Si-O skeleton forming Ca-F clusters. The fraction of the bridging and nonbridging oxygen atoms was derived from the O1s spectra, and the network of the fluorine-containing glasses was concluded to depend only on the ratio CaO/SiO2.
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U2 - 10.1557/JMR.1998.0093
DO - 10.1557/JMR.1998.0093
M3 - Article
AN - SCOPUS:0032023333
SN - 0884-2914
VL - 13
SP - 739
EP - 743
JO - Journal of Materials Research
JF - Journal of Materials Research
IS - 3
ER -