You can develop applications which use MTDATA internally to perform all sorts of thermodynamic calculations. The details of the procedure are out of the scope of this tutorial, you should use the MTDATA APPLICATION INTERFACE PROGRAMMING GUIDE.

This file is an example of application which calculates the T0 and Ae3 curves for a given system. To compile it, you need this script.
This example is about compiling and using this particular program.

• Compile (from a terminal, prompt will change depending on your machine): create a directory where you save the source and the script above.

  [10:16:19]{pt-napoleon:mtdata_T0}$compile T0_calculate T0_calculate
  

• Create an mpi file following this example, then copy it (here called example.mpi) into the folder created above:

  WHICH MODULE ? acc
  ACCESS OPTION ? def sy 'Fe,Mn,C' sou plus !
  ACCESS OPTION ? cl ab p(*) no p(FCC_A1,BCC_A2) !
  ACCESS OPTION ? def out 'example' !
  ACCESS OPTION ? save

• Download this input file and this example composition file, copy them into the directory you created in step 1. You can guess the way they work by having a look at the source code. The two files provided should work without modification if you have followed the example for creation of an mpi file.
  Then run the program:

  [10:28:30]{pt-napoleon:mtdata_T0}$./T0_calculate

This is a plot of the content of results_T0 and results_Ae3:

This program exists pre-compiled in /opt/mtdata/localbin/
From a linux machine, you can also use a simple graphical interface called T0_AE3_curves.