It is designed for Faraday rotation angle measurements in the range of wavelength 385nm to 845nm. Magnetic field dependency of Faraday rotation can be measured precisely with this equipment. Working of this Faraday Effect Measuring Equipment is based on the rotation analyzer method. Max. magnetic field of 15,000 Gauss can be generated at pole gap of 12mm. Optical rotation measurement resolution is ± 0.01 deg.
By using optional device, thermal dependence can be also measured. It is possible to evaluate thermal dependency property in the range of -70 to 300°C, because it can be designed to mount heating chamber and cryostat. The software allows users to control the sample temperature and magnetic field.
|Light source||:||Spectra 20W Quartz halogen lamp|
|Polarization analysis method||:||Rotation analyzing method|
|Cuvette||:||10 mm path length glass cuvette|
|(Custom holders can be provided on request)|
|Sample chamber options||:||High / low temperature sample holder|
|Sample moving stage||:||X, Y & Z axis positioner|
|Travel||:||X, Y & Z (± 5mm)|
|Positioning resolution||:||10 micron|
|Angular resolution||:||0.1 deg.|
|Electro magnet Unit||:||PC controlled constant current operation|
|Max. magnetic field||:||1.5 Tesla @ 12mm pole gap|
|Min. field Detection||:||1 Gauss|
|Field detection||:||Hall probe based (PC based field measurement)|
|Feed back of magnetic field||:||Feed back as the sensor of hall element|
|Chiller||:||5 ~ 25°C chilling water (for cooling electromagnet)|
|Power supply for electro magnet||:||Bi-polar type ( Max. ± 90V / 5A )|
|2kVA AC220V 50Hz|
|Control unit||:||1kVA AC220V 50Hz|
|Software||:||Spectra ORMS software|
Flexible and Adaptable Optical Layout
385 - 845 nm Measurement Range
0.009 Degree Optical Rotation Resolution
Option for fully automatic control
Magnetic field detecting sensor
Magnetic field feedback facility
Model : HC 85
Sample chamber can be heated from room temperature to 200°C to measure temperature dependence.
Temperature Range from RT to 85°C, PID Temperature control
Setting resolution : 0.1°C
Thermo sensor : Pt 100 Ohms
Model : NC 70
Sample holder for low temperature ( Nitrogen CRYOSTAT)
Chamber to cool sample around to -70°c by liquid nitrogen.
Setting resolution : 1°C
Thermo sensor : Pt 100 Ohms
Model : TE 05
Heating / cooling method by TE cooler
Temperature range, -5 to 40°C
Thermo control method : PID control
Thermo stability : ± 0.5°C
When options are mounted on the equipment, max. magnetic field may be reduced.
Custom magneto-optical system can be supplied.
Special sample stages can be provided for precision movement of the sample about vertical and horizontal axes
Optical rotation measurement resolution : 0.009 degree (at transparence more than 20%)
Detecting sensitivity : 0.009deg.
Optical rotation measuring range : ± 90 deg.
Measuring wavelength range : 385nm - 845nm
Spectral bandwidth : 1nm ( Variable band pass up to 10nm)
Max. magnetic field : 15,000 Gauss at 12mm pole gap
Min. field detection : 1 Gauss
Magnetic field preciseness : ± 0.05%
OR Measurement of Thin film, crystal, fluids etc, having Faraday effect
Measurement Verdet Constant of Transparent Solids and Liquids
Magnetic field vs. Faraday rotation angle at a desired wavelength
Faraday rotation angle vs. Wavelength dispersion
Faraday rotation angle vs. Thermal dependence (Optional Feature)