Abstract
A SQUID microscope is one of the magnetic imaging methods to achieve both the good spatial resolution and quantitativity for magnetic imaging. Since the conventional SQUID microscopes adopt the low Tc superconducting SQUIDs, it is difficult to measure the samples under room temperature. We have developed a SQUID microscope with a scanning tunneling microscope (STM-SQUID) using a probe with a sharp tip made of permalloy and a high Tc superconducting SQUID. The submicron magnetic domains of ferromagnetic thin films were clearly observed under room temperature and the air condition. The STM-SQUID has also achieved the imaging of surface morphology with nanometer scale and magnetic field with submicron scale simultaneously.
