Sujet de stage / Master 2 Internship

The aim of the internship is to study the magnetoresistive magnetic sensor integration in flexible cantilever on their performances. The sensors, destinated to be integrated in a scanning microscope, will be microfabricated in clean room and characterized in terms of magnetotransport and noise.

In order to characterize the magnetic properties of materials such as steels or nanoparticles, an ultrasensitive and quantitative magnetic microscope is developed at the Nanomagnetism and Oxides Laboratory. This microscope combines a scanning local probe microscope of the AFM (Atomic Force Microscope) type and a magnetic sensor integrated in an AFM lever arm. The magnetic sensors used are giant magnetoresistance sensors, based on spin electronics and able to detect magnetic fields in the nT/√Hz range.
The goal of the internship will be to study the performance of the sensors in terms of magnetoresistance and noise when integrated into flexible lever arms. The response of the sensors will have to be optimized according to the targeted application. The internship will have a microfabrication aspect in clean room and a transport and noise measurement aspect, which will be performed in the shielded chamber of the Ultra Low Noise platform.
The developed probes will then be integrated in the microscope in order to realize magnetic images.