Research - Grade MOKE Hysteresis Loop Tester

The Research-Grade MOKE Hysteresis Loop Tester enables high-precision magnetic characterization of:

• Ferromagnetic materials
• Artificial antiferromagnetic structures
• Two-dimensional materials
• Microelectronic devices

By applying both in-plane and vertical magnetic fields simultaneously, the system can measure hysteresis loops of any combination of field direction and magnetization component.

• Kerr rotation detection accuracy: up to 0.3 mdeg (RMS)
• Resolution: capable of detecting magnetization in a single atomic layer
• Sample holder: equipped with wire-tie design for electro-magneto-optical property characterization

The system is independently developed with high stability, strong scalability, and offers customization. Compared to similar instruments, it provides larger magnetic fields and higher precision while achieving in-plane and vertical loop measurements without altering the optical path.

In-plane magnetic field strength:
>1.0 T@8 mm air gap
>0.5 T@16 mm air gap

Vertical magnetic field strength:
>1.0 T@7 mm air gap
>0.5 T@16 mm air gap

• Integrated gaussmeter sample holder with multiple ranges Maximum magnetic field resolution < 0.02 mT Collected field closely reflects the actual sample field
• Five-axis sample stage with laser real-time auto-alignment
• Four-pole vector magnet with dual in-plane and vertical field operation
• Highly focused laser beam spot for localized measurements

As small as 250 μm, users can obtain fine local magnetic information.

• Polar Kerr tests for perpendicular magnetic anisotropy thin films
• Room-temperature Kerr testing of multilayer film stacks (e.g., W/CoFeB/MgO/W)
• High-resolution detection of magnetization dynamics under varying magnetic fields

Polar Kerr signal with polar magnetic field @20 loops,0.1 Hz

Polar Kerr signal with longitudinal magnetic field @20 loops,0.1 Hz

• Four-pole vector magnet (in-plane and vertical fields)
• Integrated gaussmeter sample holder
• Five-axis precision sample stage
• High-precision optics with focused laser system
• Software-driven automated alignment and data acquisition

• Intelligent software platform with laser auto-alignment
• Real-time magnetic field scanning and hysteresis loop acquisition
• Noise reduction through signal averaging at different scan cycles
• Automated data storage and export in multiple formats

Model: Research-Grade MOKE Hysteresis Loop Tester
Included Components: Four-pole magnet, integrated gaussmeter holder, laser optics, sample stage, control software