First Order Reversal Curve (FORC) diagrams represent an alternative means for characterizing the interactions of fine magnetic particle systems.  This technique requires thousands of magnetic measurement data points to produce contours which provide a more precise measure of particle magnetic strength interactions.

PRINCETON MEASUREMENTS CORPORATION  Alternating Gradient and Vibrating Sample Magnetometer Systems provide valuable tools for the acquisition of large numbers of data points quickly and efficiently.

TYPICAL FIRST ORDER REVERSAL CURVES RAW DATA
                  

 

FIRST ORDER REVERSAL CONTOUR DIAGRAM AFTER POST PROCESSING
                                        

           Data courtesy of C.R. Pike,  R.T. Scalettar, G. Zimanyi - U. Cal. Davis, C.A. Rodd - M.I.T.

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