Simultaneous measurement of anisotropic magnetoresistance and observation of magnetic domains by Kerr microscopy

We report a new instrument, which consists of a Kerr microscope combined with resistance measurements. This setup allows for recording magnetic domains while measuring the anisotropic magnetoresistance (AMR). For this purpose the development of a special sample holder and the extension of the measurement software was needed. The sample holder is equipped with electrical contacts in such a way to apply a current, measure the voltage, and use it in the Kerr microscope. The extension of the measurement software enables one to record resistance and Kerrimages at the same time. This Kerr microscopy combined with the simultaneous measurement of the AMR leads to a better understanding of the AMR behavior.