Magnetic Testing
Micro MOKE Magnetic Measuring Instrument
Magneto-optic Kerr Effect (MOKE)
Compact micro MOKE system for rapid, non-contact hysteresis loop measurements and magnetic parameter extraction in thin film samples.
Product Overview
Micro MOKE Magnetic Measuring Instrument
The Micro MOKE Magnetic Measuring Instrument uses the magneto-optical Kerr effect (MOKE) to measure magnetic hysteresis loops of materials.
This measurement method offers several advantages:
- Fast measurement speed
- High precision
- Non-contact testing
- No damage to the sample
- No additional sample preparation required
Using this system, important magnetic parameters can be obtained, including:
- Coercive force (Hc)
- Saturation magnetic field
- Remanence (Br)
Instrument Description
The Micro MOKE magnetic measuring instrument is a portable system independently developed by Dexinmag. The instrument is compact, sensitive and fast, making it suitable for both:
- Laboratory research
- Industrial production testing
It is designed for rapid and non-destructive testing of magnetic thin film materials. For different magnetically anisotropic materials, the instrument provides an integrated optical measurement solution without requiring external devices, displays or accessories.
Users can quickly complete hysteresis loop measurements using the integrated system.
Key Features
- Flexible scanning modes including fast scanning and fine scanning
- Highly focused laser allows detection of local or single structures of samples
- Built-in test result saving function to store spectrum and scanning data
- Integrated sample holder with positioning function for stable testing
- Highly integrated system with all components built inside the instrument
- Simple software interface developed using LabVIEW, making operation intuitive
Typical operation flow:
Insert sample → Start measurement → Output results
Dual input modes:
- Touchscreen operation
- Keyboard and mouse control
Multiple external interfaces include:
- USB ports
- HD display interface
- Network interface
Device Parameters
Sample Compatibility
- Maximum sample size: 10 mm × 10 mm fragments
- Larger samples can be customised
- Expandable up to 2-inch samples
Magnet System
- Uses bipolar magnets
- Magnetic field direction is perpendicular to the film surface
Magnetic Field Performance
- Rated maximum magnetic field: 650 mT
- Higher magnetic field options available through customisation
Quick Test Mode
Fast scan mode:
- Magnetic field range: -20 mT to 20 mT
- Step size: 1 mT
Testing time:
- From sample loading to test completion: ≈ 45 seconds
- From test start to completion: ≈ 30 seconds
Measurement Performance
- Magnetic field resolution: 50 μT
- Kerr rotation detection sensitivity: better than 0.8 mdeg
Mechanical Specifications
- Air gap: 6 mm
Instrument dimensions:
- Length: 510 mm
- Width: 360 mm
- Height: 392 mm
Application Fields
The Micro MOKE system is suitable for a wide range of research and industrial applications, including:
- Spintronics and magnetotronics research
- Magnetic nanotechnology
- Non-volatile MRAM device characterisation
- Magnetoresistance studies
- Magnetic thin film characterisation
- Magnetic sensor development
Measurement Results
Vertical Sample Hysteresis Loop
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