Surface Magneto-optic Kerr Effect System

The DXMOKE series of magneto-optical Kerr effect system is introduced. As an efficient and feature-rich device, it has the ability to directly obtain the hysteresis loop of the longitudinal, transverse and polar Kerr rotation Angle or ellipticity. It is also capable of accurately measuring key magnetic properties such as coercive force and saturated magnetic fields, and the magneto-optical Kerr effect System (MOKE) has demonstrated its excellent performance and broad application prospects in the exploration of magnetic thin films, magnetic nanostructures and spintronics.

In the field of physics, the magneto-optical Kerr effect (MOKE) or surface magneto-optical Kerr effect (SMOKE), as an important manifestation of the magneto-optical effect, describes the changes caused by the reflection of light on a magnetized surface. Note: Kerr Angle refers to the Angle of rotation of the polarization direction of linearly polarized light after irradiation on the surface of the sample, and the change of this Angle directly reflects the magnetic characteristics of the sample. Kerr ellipticity, though different from the mathematical concept of ellipticity, is equally important. It is the ratio between the semi-major axis and the semi-minor axis of linearly polarized light after it is converted to elliptically polarized light during reflection, and this ratio also provides us with valuable information about the magnetic properties of the sample.

system

1. The use of TTL modulation low-noise laser light source: In order to obtain a more pure and stable light source signal, we use TTL modulation technology to effectively reduce the noise level of the laser light source.
2. Use high-sensitivity photoelectric sensor to receive light intensity signals: In order to ensure that weak light intensity changes can be accurately captured, we use high-sensitivity photoelectric sensor tubes to ensure accurate reception of signals.
3. Acquisition of frequency-locked signals with phase-locked amplifiers: By introducing phase-locked amplifiers, we achieve accurate acquisition of frequency-locked signals, improving the efficiency and accuracy of signal processing.
4. Low noise, high resolution, high stability: Our system is designed to pay attention to low noise, high resolution and high stability, to ensure accurate and reliable measurement results, to provide users with high-quality scientific research experience.
5. Highly integrated optical devices: For the convenience of users, we have highly integrated designs for all optical devices. The user simply installs the sample and fine-tunes the sample rod to obtain the Kerr signal easily, greatly simplifying the operation process.
6. Integrated Kerr effect measurement and magnetic domain observation microscope observation: Our system not only has the function of Kerr effect measurement, but also integrates the magnetic domain observation microscope with a microscopic resolution of up to 6um, providing users with a more comprehensive means of magnetic properties research.
7. In situ measurement under vacuum: In order to meet the measurement needs under different experimental conditions, our system supports in situ measurement under vacuum environment, while providing a variety of magnetic field and low temperature options, providing users with more flexible scientific research tools.

system

1.Single point loop testing: The system supports longitudinal, transverse and polar Kerr effect tests to accurately measure the magneto-optical Kerr effect characteristics at a single point.

2.Regional mapping function: By fine moving the sample up, down, left and right, the system can test the magneto-optical Kerr effect at different points on the surface of the sample, realize regional mapping, and fully understand the magnetic energy distribution of the sample.

3.Rotating sample or magnetic field function: The system allows the user to rotate the sample or magnetic field 360 degrees to determine the material's magnetization difficulty axis and further test for anisotropy.

4.Magnetoelectric coupling test interface: The sample holder has an electrical interface, which is convenient for users to join the magnetoelectric coupling test to study the performance of the material under magnetoelectric interaction.

5.Integrated microscope and high-speed CCD system: The system integrates high-speed CCD and microscope system, which can not only observe the surface morphology of the material, but also detect the difference of the intensity distribution of the light spot with the change of the magnetic field after the addition of the polarizer, so as to accurately obtain the magnetic domain information.

Kerr angle resolution: less than 0.001 degrees;

Ellipse resolution: less than 0.1%;

Minimum spot: 10 microns;

Maximum magnetic field: 2.2T (select EM7 electromagnet);

The rotation angle step is 0.1 degrees, and the up, down, left, and right displacement steps are 10 microns;

Noise: less than 1%.

Temperature range: 100K ~ 300K;
Temperature control accuracy: ±0.01°C;
Cooling time: 30 min to 100K;
Heating rate: 0.01 ~ 30°C/min;
The sample is in a vacuum environment;
K9 glass optical window to minimize magneto-induced optical rotation.

We cater to a wide range of shipping requirements, including sea, air, and express delivery options. Our goal is to ensure that customers have the flexibility to choose the best shipping method for their specific needs, while also receiving timely and cost-effective service.