The FORCIT software package produces first-order reversal curve (FORC) diagrams and related plots (see examples below). It is available for use free of charge.
FORCIT (along with TRACKIT), their subroutines, and a Makefile are available in gzip/tar format or Stuffit format in files:
NOTE: This version of FORCIT was last updated in 2007. It is an archive version. Any new versions, if and when they are created, will be posted on Gary Acton's new web page.
For bug reports and suggestions for improvement, E-mail Gary Acton at firstname.lastname@example.org.
||The plots created by FORCIT and TRACKIT are illustrated for
an ocean crust basalt sample (1256D-49R-2, 99 cm) from
Hole 1256D cored on Ocean Drilling Program Leg 206.
a) The instrument drift curve.
b) The FORC paths plotted in Ba vs. Br space.
c) The moment plotted in Ba vs. Br space.
d) The FORC paths plotted in B vs. M space.
e) A 2-d FORC diagram with the FORC distribution
f) A 2-d FORC diagram plotted in Ba vs. Br space.
g) The micro-susceptibility, which is the first partial derivative,
plotted in Bc vs. Bb space.
h) The standard 2-d FORC diagram plotted in Bc vs. Bb space.
i) The FORC distribution along a profile where Bc = 0,
j) A 3-d FORC diagram (view angle 135°) plotted in vs. space.
k) A 3-d FORC diagram (view angle 45°) plotted in vs. space.
l) A 1-d plot of the FORC distribution produced by program TRACKIT.
Generally each plot also gives the sample name, data file name,