Diffusion of Oxygen Vacancies in Reduced Rutile (TiO_2)

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概要

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• Diffusion coefficients of point defects in reduced rutile (TiO_2) due to the reduction in vacuum of 4×10^<-9> Torr with the ion pump in the temperature range 800℃-1100℃ were studied. The coefficients along c and a-axes are D_c=147 exp(-(2.4±0.3)/(kT)) and D_a=91 exp (-(2.4±0.3)/(kT)). The activation energies are very close to tat of O^18 in rutile by Haul and Dumbgen. Diffusions are discussed in terms of oxygen vacancies from the crystal orientation dependence of the coefficients and the activation energies. It is concluded that the result in this experiment gives the clear evidence of the presence of oxygen vacancies in reduced rutile and their migration energies are 2.4 eV.

• 社団法人日本物理学会の論文
• 1972-05-05

著者

• Iguchi Eisuke

  Department Of Mechanical Engineering And Materials Science Faculty Of Engineering Yokohama National

• Iguchi Eisuke

  Department Of Metallurgical Engineering Faculty Of Engineering Yokohama National University

• YAJIMA Kazuo

  Department of Metallurgical Engineering, Faculty of Engineering, Yokohama National University

• Yajima Kazuo

  Department Of Metallurgical Engineering Faculty Of Engineering Yokohama National University

関連論文

• Diffusion of Oxygen Vacancies in Reduced Rutile (TiO_2)
• Madelung Potentials in YBa_2Cu_3O_x (x=7 and 8)

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