CryoFMR
The CryoFMR turns the Cryostation with Magneto-Optic into a variable temperature Coplanar Waveguide Ferromagnetic Resonance (CPW-FMR) spectrometer.
Users would have the full capabilities of the Cryostation closed-cycle optical cryostat, as well as the Magneto-Optic module for their experiments.
CPW-FMR Spectrometer
CPW-FMR is a spectroscopic technique that measures the coupling between an RF signal traveling in a coplanar waveguide and the oscillating magnetization of a sample.
This may be used to determine the saturation magnetization Ms or the gyromagnetic ratio λ, in addition to parameters of the dynamic behavior of the spin excitation, such as the intrinsic damping α and the inhomogeneous line broadening ∆Ho. The system uses modulation coils for lock-in, so no Vector Network Analyzer is required.
Cryostation® System
The Cryostation provides an automated and controlled environment for low temperature CPW-FMR measurements. The specially designed chamber integrates seamlessly with the
required equipment.
- Low cost, helium-free operation
- Fully-automated control
- Versatile & flexible tabletop mounting architecture
- Optimized temperature performance & thermal stability
Features
- Revolutionary variable temperature turn-key FMR spectrometer
- Extracts the temperature dependent MS, damping, inhomogeneous broadening and gyromagnetic ratio
- Frequency 2-17 GHz
- Temperatures from 10K to 350K
- Easy to use LabView interface
Specifications
| Magnet Control | Analog voltage control | |
| Field Strength | -7000 to +7000 Oe continuous through B=0 | |
| Field Resolution | +/- 21 μT | |
| Max Sample Size | 8mm x 12mm (14.4mm diagonal) | |
| RF Source | Range: 2 to 17 GHz Accuracy +/- 0.05 GHz |
|
| Readout | Range: -10V to +10V with 16 bit resolution. Max sampling rate 5 kS/s |
|
| AC Field Modulation | Variable up to Oe peak-topeak with modulation coils | |
| Temperature Range | 10 K – 350 K | |
Full System Includes:
- Montana Instruments Cryostation with Magneto-Optic module
- NanoOsc Instruments CryoFMR spectrometer with RF coaxial cables
- A CPW waveguide with coaxial cables for an Adjustable Vertical and
Horizontal Mount - Helmholtz modulation coils and a Hall sensor assembly
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