Holmarc has introduced a new innovative high sensitivity and high magnetic field Spectroscopic Faraday/Kerr effect measuring equipment utilizing the VIS-NIR wavelengths. HOLMARC A216 FR/KR test station provides standardized testing solution to fit wide ranging optical rotation measurement applications. The modular hardware design allows user to take automatic measurements of Faraday effect, MOKE & Ellipsometry in a single instrument.
Designed for magneto optic material research and testing including magnetic characterizations of ferromagnetic and ferrimagnetic films and materials. Measurement include magnetic hysteresis loops of ultra thin magnetic films and multilayers, Ellipticity measurements, Thin film thickness measurement of dielectric materials, Refractive index, Delta and psi measurements etc. System can be operated in Polar, Longitudinal and Transverse configurations.
Light source | : | Spectra Deuterium / Halogen or Xenon Arc Lamp |
Monochromator | : | Quasar 300F Czerny-Turner Type |
Wavelength Range | : | 380 - 850 nm |
Collimating & Focusing mirror | : | 50 mm dia, 300 F |
Optical Grating | : | 1200 l / mm |
Spectral dispersion | : | 2.6 nm / mm |
Grating Size | : | 50 x 50 mm |
Absolute Diffraction Efficiency | : | 45 - 65 % |
Slit Width | : | 0 ~ 3 mm Continuously Adjustable |
Resolution | : | 0.1 nm |
Wavelength Accuracy | : | 0.2 nm |
Wavelength Repeatability | : | 0.1 nm |
Stray Light | : | 10-3 |
Reciprocal of Linear Dispersion | : | 2.7 mm |
Half-Width of Spectral line | : | 0.2 nm @ 586 nm |
Polarization analysis method | : | Rotation analyzing method |
ARMS | : | Stepper Motor Controlled Auto Positioning |
Spot Diameter | : | 1 - 5 mm |
Thin film Holder Sample size | : | 1 - 12 mm |
(Custom Holders can be provided on request) | ||
Cuvette | : | 10 mm Path length Quartz Cuvette |
Sample chamber option | : | High / low temperature sample holder |
Sample Feeding Unit | : | Stepper Motor Controlled Auto Positioning System |
Electro Magnet Unit | : | PC Controlled Constant current operation |
Cooling | : | Water cooled |
Max. magnetic field | : | 1.75 Tesla @ 12mm pole gap |
Min. Field Detection | : | 1 Gauss |
Magnetic field preciseness | : | ± 0.05 % |
Field detection | : | Hall probe based (PC based field measurement) |
Feed back of magnetic field | : | Hall element |
Chiller | : | 5 ~ 25°C Chilled water (for cooling electromagnet) |
Volume | : | 2 L / min. |
Power supply for Electro Magnet | : | Bi-Polar type (Max. ± 90 V/5A) |
2.5 kVA AC 220V 50Hz | ||
Control unit | : | 1 kVA AC 220V 50Hz |
Software | : | Spectra ORMS software |
380 - 850 nm Measurement Range
0.009 Degree Optical Rotation Resolution
Fully automatic control
Magnetic field detecting & feedback facility
MOKE Measurements
Ellipsometric Measurements
Model : HC 85
Sample chamber can be heated from room temperature to 85°C to measure temperature dependence property.
Model : NC 70
Sample holder for low temperature (Nitrogen CRYOSTAT) chamber to cool sample down to -70°c using liquid nitrogen.
Model : TE 05
Heating / cooling method by TE cooler Temperature range, -5°C to 40°C
Optical Rotation Resolution : ± 0.009 Degree
Detecting sensitivity : 0.009 deg (at transparence more than 20%)
Stability : 0.03 deg (at transparence more than 20%)
Ellipticity Measurement : ± 0.01 deg.
Optical Rotation Measuring range : ± 90 deg.
Measuring Wavelength Range : 380 - 850 nm
Spectral Bandwidth : 1 nm ( Variable band pass up to 10nm)
Max. magnetic field : 11,000 Gauss @ 20 mm 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
Faraday rotation / ellipticity angles
Polar Kerr rotation / ellipticity angles
Magnetic field vs. Faraday rotation angle property at a desired wavelength
Faraday rotation angle vs. Wavelength dispersion property
Faraday rotation angle vs. Thermal dependence property (Optional)
Optical Rotation
Film Thickness
Refractive Index
Absorption Coefficient
Optical Conductivity
Phase velocity
Group Index
Brewsters Angle
Refractivity in Air
Molar Refractivity
Photon Energy
Canonical Momentum
Kinetic Momentum
Group Velocity
PSI - Delta
Epsilon 1 & 2
Model : HO-A216FR/KR-ORMS Software window
Fig. Material Library Software Window
The optical activity of transparent substance under an external electric field can also be investigated with addition of HV power supply on this unit.
Constant Value Model
Entered Value Model
Cauchy's Coefficients Model
Sellmeier's Coefficients Model
Combination of Cauchy & Sellmier Model
Drude Coefficients
Lorentz-Drude Coefficients
Brendel-Bormann Coefficients
Adachi Coefficients
Cauchy Lorentz Coefficients
Amorphous Dispersion Coefficients
Cauchy Absorption Coefficients
Sellmeier Lorentz Drude Model Coefficients
Cauchy Urbach Coefficients
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