One of the current challenges in solid state physics is the observation and ultimately control of the Majorana excitations sometimes called Majorana fermions. Devices based on Majorana excitations have the potential to revolutionize low power consumption electronics and the realization of a quantum computing. Making these devices a reality will require a complete understanding of the interface between topological insulators and quantum spin hall insulators with that of ferromagnets, antiferromagnets, superconductors and normal metals. We propose to study the topological insulator/antiferromagnetic interface by using PNR to extract the magnetic depth profile near the interface. Using an antiferromagnet simplifies the measurement considerable since the only measurable magnetic signal will be due to the interface alone.