EXAFS Study of Rutile and Anatase
نویسندگان
چکیده
T w o crystallographic forms of TiC>2 (rutile and anatase) were subject to a n extended x r a y absorption fine structure study a t the K threshold of t i tanium. D a t a analysis was carried out b y Fourier methods and curve fitting techniques. Using the theoretical phases, T i 0 bond distances of 1.93(1) A were derived both for ruti le and anatase, as compared to the crystallographic values of 1 .948—1.980(1) A (rutile) and 1.934—1.980(1) A (anatase). The ratio of the cat ion coordination numbers Nr/NSi = 1.07 is close to the theoretical value.
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