G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
It was observed by Lange that rutile (TiO2) appropriately heated in a vacuum showed an anomalous attenuation peak for 1-GHz ultrasound. He suggested that the cause of the attenuation was some lattice defects, and not conduction electrons. By comparing the attenuations of 3-GHz ultrasound in vacuum-heated TiO2 with that in Nb-doped TiO2 we find strong evidence for Lange's conclusion. © 1974 The American Physical Society.
G. Will, N. Masciocchi, et al.
Zeitschrift fur Kristallographie - New Crystal Structures
Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
T.N. Morgan
Semiconductor Science and Technology
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997