STM-SQUID 顕微鏡

抄録

  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 T_c 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 T_c 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.