Multifunctional Magneto - Optical Kerr Imaging System

The Multifunctional Magneto-Optical Kerr Imaging System is built on a self-designed optical path structure and integrates high-quality optoelectronic components from Olympus and Soleibo. It is designed for magnetic domain imaging and dynamic research on magnetic materials and spintronic devices.Multifunctional Probe StationPrinciple diagram

• Integrated multifunctional probe station with vertical magnetic field (max 1.8T), in-plane magnetic field (1.4T), and DC/HF probes.
• Wide temperature control range: 4K–873K, enabling imaging of hard magnetic materials.
• Combination of magneto-optical imaging and spin transport testing.
• Synchronous multi-signal control (magnetic field, current, microwave, etc.) at μs level.
• High-precision laser displacement sensor with 1 µm resolution.
• Real-time image subtraction for background noise elimination.
• Automatic vibration drift correction.
• Local (220 nm) or global hysteresis loop scanning based on Kerr image analysis.

Magnetic Domain Imaging Effects in Perpendicularly Anisotropic Magnetic Films (1 nm Thick)

Magnetic domains on the surface of permanent magnet (NdFeB) bulk

Nanofilm material

Magnetic domains on the surface of silicon steel block

• Natural magnetic materials
• Magnetic semiconductors
• Particulate alloys
• Multilayer magnetic films
• Spintronic devices

Applications include:

• Magnetic material quality detection (defects, damage, structural integrity)
• Spintronic device testing under dynamic conditions
• Domain wall dynamics and spin transport studies

Detect the quality of magnetic materials

Detect defect location

Damage detection of spintronic devices

Analyzing the hysteresis loop results

• Multifunctional probe station with in-plane and vertical magnetic fields
• DC/HF probing system
• Variable temperature unit (4K–873K)
• Optical Kerr imaging microscope
• Multifunctional control system for signals and image synchronization

• Real-time image subtraction and drift correction
• Automatic scale bar addition
• Signal synchronization with imaging acquisition
• Data export compatible with Excel, Origin, and general scientific software

• Vector coil option for anisotropic magnetic material analysis
• Keithley 6221 & 2182A source meter for Hall effect, I–V, and MR testing
• Microwave source, probes, and lock-in amplifier for ST-FMR and second harmonic tests

Model: Multifunctional Magneto-Optical Kerr Imaging System
Standard Components: Probe station, Kerr microscope, control system, software suite
Optional Accessories: Vector coil, microwave source, lock-in amplifier