Field measuring instrument DXMOKE

magnetic fieldforcesurface

In physics, the magneto-optic Kerr effect (MOKE) or the surface magneto-optic Kerr effect (SMOKE) is one of the magneto-optic effects. It describes the changes to light reflected from a magnetized surface. The DXMOKE series magneto-optical Kerr system can directly obtain the longitudinal, transverse and polar Kerr rotation angle or the hysteresis loop of ellipticity, and can also obtain magnetic properties such as coercive force and saturation magnetic field. The DXMOKE magneto-optical Kerr system is an ideal tool for studying magnetic thin films, magnetic nanostructures and spintronics. The Kerr angle is the angle that linearly polarized light will be rotated after hitting the sample. The Kerr ellipticity (not to be confused with ellipticity from mathematics) is the ratio of the semimajor and semiminor axes of the elliptically polarized light, generated from reflection of linearly polarized light. Features of DXMOKE Surface magneto-optic Kerr effect system 1. Using TTL to modulate a low-noise laser light source; 2. Using a high-sensitivity photoelectric sensor tube to receive light-intensity signals; 3. Using a lock-in amplifier to collect frequency-locked signals; 4. Low noise, high resolution and high stability; 5. All optical devices are highly integrated, and the user only needs to install the sample and fine-tune the sample rod to obtain the Kerr signal; 6. Integrated Kerr effect measurement and magnetic domain observation microscope observation, the microscopic resolution is 6um; 7. It can measure in situ under a vacuum and has a variety of magnetic field and cryogenic options.