New app note on T- FORC measurements using our 8600 Series VSM

First-order reversal curve (FORC) measurements provide information regarding magnetic interactions and coercivity distributions that cannot be obtained from hysteresis loop measurements alone. Temperature FORC (T-FORC) measurements take this capability further. They extend the FORC measurement and analysis protocol to magnetic materials that exhibit thermal hysteresis, such as for determining magnetoelastic or magnetostructural phase transitions as a function of temperature.

This new app note, written by Lake Shore Cryotronics in collaboration with Victorino Franco and Luis M. Moreno-Ramirez of the Univ. of Seville, discusses T-FORC measurement techniques and analysis and presents results for a magnetocaloric (NiMnSi)_0.66(Fe₂Ge)_0.34 alloy sample. All measurement results presented were recorded using our Model 8607 VSM with either an 86-CRYO or 86-SSVT variable temperature option, and the data were analyzed using Lake Shore's RTForc™ software.