At 1773K the electrical conductivity of sapphire (single crystal of Al;Os) was found to be 1.25 mSm'. In sapphire oxygen diffusivity is 0.4 nm'm'. Can this high conductivity be from oxygen diffusion only? (% 30) (kB=1.381 1023 J/K, papphire=3.980 g/cm', M(Al)= 27 g/mol, M(O)= 16 g/mol, The unit cell contains six formula units.) n(ze) Djon kgT
At 1773K the electrical conductivity of sapphire (single crystal of Al;Os) was found to be 1.25 mSm'. In sapphire oxygen diffusivity is 0.4 nm'm'. Can this high conductivity be from oxygen diffusion only? (% 30) (kB=1.381 1023 J/K, papphire=3.980 g/cm', M(Al)= 27 g/mol, M(O)= 16 g/mol, The unit cell contains six formula units.) n(ze) Djon kgT
Related questions
Question
![2
At 1773K the electrical conductivity of sapphire (single crystal of Al;Os) was found
to be 1.25 mSm'. In sapphire oxygen diffusivity is 0.4 nm°m'. Can this high conductivity be from
oxygen diffusion only? (% 30) (kB=1.381 1023 J/K, psapphire=3.980 g/cm², M(Al)= 27 g/mol,
M(O)= 16 g/mol, The unit cell contains six formula units.)
n(ze)²Djon
kgT
h=6.626 103ª Js
e=1.6 1019 C
c=3 10® ms²
NA=6.022 10²3 atomsmol
N(Si)=5 10²² atomscm³
n.(Si)=1 101º cm³
He(Si)=1350 cm²V's!
Hn(Si)=450 cm²V1s?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F222aad69-fd0c-4f57-8792-89aaba3dff7b%2Ffa443c56-05ab-4f07-9b5b-56a9e136fc83%2F8ylekj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2
At 1773K the electrical conductivity of sapphire (single crystal of Al;Os) was found
to be 1.25 mSm'. In sapphire oxygen diffusivity is 0.4 nm°m'. Can this high conductivity be from
oxygen diffusion only? (% 30) (kB=1.381 1023 J/K, psapphire=3.980 g/cm², M(Al)= 27 g/mol,
M(O)= 16 g/mol, The unit cell contains six formula units.)
n(ze)²Djon
kgT
h=6.626 103ª Js
e=1.6 1019 C
c=3 10® ms²
NA=6.022 10²3 atomsmol
N(Si)=5 10²² atomscm³
n.(Si)=1 101º cm³
He(Si)=1350 cm²V's!
Hn(Si)=450 cm²V1s?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)