What is the density of zinc ferrite material to measure the thickness of thin films
One of the following you may use according to condition of the film.
Film thickness can be checked by
there are many techniques to measure film thickness:
1- An interferometric method, more details is available at: TOLANSKY S. Multiple beam interferometry of surfaces and films. London: Oxford University Press, 1988: 147.
2- Using mass of the film, m according to the next details::
W1 is the weight of cleaned substrate
W2 is the weight of cleaned substrate plus film
W2-W1= the weight of the film
ΔW=mg
m = ΔW/g
m=ρXV ; ρ, is the density of film material and V is the volume of the film
the Volume = (Width X Length X Thickness) of the film
3- SEM or AFM (film-substrate ) cross section
One of the following you may use according to condition of the film.
Film thickness can be checked by
there are many techniques to measure film thickness:
1- An interferometric method, more details is available at: TOLANSKY S. Multiple beam interferometry of surfaces and films. London: Oxford University Press, 1988: 147.
2- Using mass of the film, m according to the next details::
W1 is the weight of cleaned substrate
W2 is the weight of cleaned substrate plus film
W2-W1= the weight of the film
ΔW=mg
m = ΔW/g
m=ρXV ; ρ, is the density of film material and V is the volume of the film
the Volume = (Width X Length X Thickness) of the film
3- SEM or AFM (film-substrate ) cross section
You have to calculate first, wieght of the thin films before and after deposition (annealed films). i. e. simple weight difference method. Use the formulas
Density = Mass/Volume
Now, it is essential to calculate Volume.
Volume = Length x Width x Thickness
Density = Mass / (Length x Width x Thickness)
Using the above equation it is possible to calculate the thickness
You have to calculate first, wieght of the thin films before and after deposition tthen use this formula
(W2-W1)/rho*A
where W2- wt. of thin film after deposition
W1- of thin film before deposition
rho is the density of ZnO or deposited material
and A is the area of thin film
as Mr. A. Eldenglawey mention, but there is AFM and Alfa step, here make some scratch and check the scratch depth.
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