Magnetometry
1. Superconducting Quantum Interference Device - SQUID
2. Ferromagnetic Resonance - FMR
3. Low temperature Ferromagnetic Resonance
4. Microreosnator Ferromagnetic Resonance
5. Time-Resolved Magneto-Optical Kerr Effect
6. Magneto-Optical Kerr Effect - MOKE
7. Kerr Microscopy
8. Probe Station for Nanostructures
9. Probe Station for Spintranfer Torque
10. Frequency-resolved MOKE for optically detected FMR
11. Atomic & Magnetic for Microscope
12. Electric Prober for Phase Change Materials
Bild |
Beschreibung |
 |
1. Superconducting Quantum Interference Device - SQUID
- Type: Quantum Design MPMS
- Field: max. 7 T
- Temperature range: 1.9 – 400 K
- Sensitivity: < 10-8 emu
Responsible: K. Potzger
top of page
|
 |
2. Ferromagnetic Resonance - FMR
- in-house development
- Agilent E8364B Vector Network Analyzer:
Frequency range 0.05 - 50 GHz
- Bruker Electromagnet: max. 2.2 T
- polar and azimuthal sample rotation
- Helmholtz magnet: max 0.1 T
Responsible: K. Lenz
top of page
|
 |
3. Low Temperature Ferromagnetic Resonance
- Attocube Attodry 1000 closed cycle cryostat
- 5 T split-coil magnet
- temperature range 4 - 300 K
- Agilent N5225A Vector Network Analyzer:
Frequency range 0.05 - 50 GHz
- full polar and azimuthal sample rotation
Responsible: K. Lenz
top of page
|
 |
4. Microresonator Ferromagnetic Resonance
- in-house development
- microwave bridge
Frequency range 8-16 GHz
- Bruker Electromagnet: max. 2.2 T
- azimuthal sample rotation
- field modulation/Lock-in detection
Responsible: K. Lenz
top of page
|
 |
5. Time-Resolved Magneto-Optical Kerr Effect
- in-house development
- Delay time up to 5 ns
- Feld: max. 1 T
- Femtolasers XL500
- Wavelength: 800 nm
- Pulse-Length 40 fs
- Repetition rate: 5 MHz
- Output Power: 2.6 W
- Energy: 500 nJ/pulse
Responsible: H. Schultheiß
top of page
|
 |
6. Magneto-Optical Kerr Effect - MOKE
- in-house development
- longitudinal and transversal Kerr effect
- Field (in-plane): max. 400 Oe (Helmholtz coils)
- x, y, f scanning capabilities
- Temperature range: RT – 600 K
Responsible: H. Schultheiß
top of page
|
 |
7. Kerr-Microscopy
- Manufacturer: Evico-Magnetics
- Microscope: Zeiss Axio Imager.D1m
- Light Source: two high-power LEDs (blue+red)
- Bipolar and quadrupol magnet
- twin-color system for quantitative Kerr analysis
- integrated AMR measurement
Responsible: J. Osten
top of page
|
 |
8. Probe Station for Nanostructures
- Süss MicroTech PM5 Wafer Prober
- Süss Z-Probes: GSG 0-50 GHz, 150µm Pitch
- Evico Magnetics electromagnet: Bmax= 0.6 T
- Optem CCD-Microscope
- Agilent MXA spectrum analyzer
- Picosecond PulseLab pulser
- Tektronix DPO72004 20GHz real-time oscilloscope
- Keithley source meter
Responsible: A. Deac
top of page
|
 |
9. Probe Station for Spintransfer Torque
- Magnetic field up to ca. 1.5 T
- Tilting sample holder: in-plane and out-of-plane-magnetic fields possible
- GGB Picoprobes (40 GHz)
- Agilent Technologies PXA 50 GHz Signal Analyzer
- Agilent MXG 40 GHz Analog Signal Generator
- LakeShore 425 Gaussmeter
- Keithley 2182A Nanovoltmeter
- Keithley 6221 Current Source
- Kepco Power Supply
Responsible: A. Deac
top of page
|
 |
10. Frequency-resolved MOKE
- optically detected FMR (5 µm spatial resolution)
- Magnetic field up to 1.4 T
- Kepco power supply
- Frequency range up to 35 GHz
Responsible: K. Lenz
top of page
|
|
11. Atomic and Magnetic Force Microscope (AFM/MFM)
- Veeco/DI Multimode
- sample size: 10 x 10 mm²
- scan area max. 100x100 µm²
- scan area 10x10 µm²
- magnetic field 0 - 65 mT
- resolution:
- Scanning Spreading Resistance Microscopy (SSRM) option
Responsible: K. Potzger
top of page
|
|
12. Electric prober for phase change materials
- temperature and magnetic field dependence of resistance
- sample size: 10 x 10 mm²
- temperature RT - 450 K
- field: 1 kOe in-plane
- base pressure < 1e-6 mbar
Responsible: K. Potzger
top of page
|
|
|
|
|