Time/Temperature Dependent Diffusion Profile

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I am looking at the change of a diffusion profile over a time interval, dt, as specified in line 33 and would like to plot multiple dt intervals on the same plot. How would I do this? As is, the code works to change dt and generate a single plot, but I would like to overlap multiple values i.e. 0-301 seconds, as well as 0-601 seconds, etc etc.

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Aaron Collins
Aaron Collins il 16 Feb 2021
As unclean as it may be, you can place the dopant drive in figure generation in a loop with different end times
for Times = [301,601,901]
%% Dopant Drive in
T_drive= 900; %anneal temp in celsius
Dop = 10.5; %preexponential diffusion term for P in cm2/s
Ea = 4.28e4; %activation energy
D_drive=Dop*exp(-1*Ea/(T_drive+273)); %calculating the diffusivity at specified T
dx = x(2)-x(1);
dt=(0.5*(dx)^2)/D_drive;
x_d=[-1e-7:1e-7:100e-7];
time_d = (0:dt:Times); %time interval for annealing, seconds
I'd recommend putting the legend in after this loop, assuming you know which time you want.
As I say, not the cleanest, but it works.
  1 Commento
Sam Bottum
Sam Bottum il 16 Feb 2021
I figured I might have to brute force it somehow... but this is much cleaner than the way I had it!!! Thank you so much for your help!

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