A multiscale approach to paleomagnetic analysis of geological materials



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FORCulator is a micromagnetic tool for calculating FORC diagrams for arbitrary ensembles of interacting single domain particles. FORCulator is a self-contained package written using Igor Pro by WaveMetrics ( Although Igor Pro is a commercial package, a fully functioning demo version can be downloaded for free for Mac and Windows. This will allow you to explore FORCulator, but will not allow you to export results after 30 days. The full version of Igor Pro is available to students at a heavily discounted price.


FORCulator is written by Richard Harrison of the Department of Earth Sciences, University of Cambridge. Please feel free to contact the author with any questions/bug reports/feature requests.


FORCulator is processor intensive and simulations can take a long time (hours to days, depending on the parameters used and the number of repeat averaging steps required). It is recommended that FORCulator is run on a desktop computer with multiple processors. Test runs using small numbers of particles and only a few averaging steps should be performed before setting off longer simulations. This will allow preliminary results to be obtained in a matter of minutes, enabling the simulation parameters to be optimised. All simulations presented on this site were performed using an iMac with a 3.4 GHz Intel Quad Core i7 processor. Simulations were also tested successfully on a MacBook Pro with 2.2 GHz Intel Quad Core i7 processor and 4 GB RAM and a Mac Mini with 2.6 GHz Intel i7 processor and 16 GB RAM. FORCulator has been written and  tested on a Mac running OSX v. 10.7.3 and Igor Pro version Although cross platform compatibility is usually trouble free, functionality cannot be 100% guaranteed on other systems using different software versions.


FORCulator includes some built in FORC processing tools, but it is recommended that you export your simulation results to FORCinel to access more advanced processing options. Instructions on how to do this are included in the Quick Start Guide contained within the download package.


You can use FORCulator for free, but please cite the following reference in any scientific publications that use FORCulator output:


FORCulator: a micromagnetic tool for simulating first-order reversal curve diagrams.


For a quick overview of the paper, please download our AGU 2014 poster:


Download PDF of Poster


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