Contact

Dr. Kay Potzger
Head Interface Magnetism
Project-group head
k.potzgerAthzdr.de
Phone: +49 351 260 - 3244, 2411
Fax: +49 351 260 - 13244

Dr. Kilian Lenz
Research Group Head
Magnetization Dynamics
k.lenzAthzdr.de
Phone: +49 351 260 - 2435
Fax: +49 351 260 - 12435

Dr. Andreas Neudert
Postdoc
Magnetization Dynamics

Dr. Alina Maria Deac
Scientist
Spintronics
a.deacAthzdr.de
Phone: +49 351 260 - 3709

Experimentelle Ausrüstung

Schichtabschneidung

Magnetormetrie

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
13. Mössbauer Spectroscopy


Bild Beschreibung
SQUID magnetometer

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

FMR

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

Cryo-FMR

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

Microresonator-FMR

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

TR-MOKE Setup

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

Instrumentation MOKE

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

Kerr-Mikroskop

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

PM5

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

STT-Meßplatz

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

FR-MOKE Setup für optisch detektierte FMR

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

AMF/MFM 

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:
    • AFM ~10 nm
    • MFM ~30 nm
  • 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

 Mössbauer Setup

13. Mössbauer spectroscopy

for charge state, quadrupole splitting, hyperfine field of Fe containing materials

  • conversion electron spectroscopy for thin films
  • transmission spectroscopy for powders
  • max. sample size: 2x2 cm²
  • room temperature measurements
  • source: 57Co

Responsible: K. Potzger

top of page

   
   
   

Contact

Dr. Kay Potzger
Head Interface Magnetism
Project-group head
k.potzgerAthzdr.de
Phone: +49 351 260 - 3244, 2411
Fax: +49 351 260 - 13244

Dr. Kilian Lenz
Research Group Head
Magnetization Dynamics
k.lenzAthzdr.de
Phone: +49 351 260 - 2435
Fax: +49 351 260 - 12435

Dr. Andreas Neudert
Postdoc
Magnetization Dynamics

Dr. Alina Maria Deac
Scientist
Spintronics
a.deacAthzdr.de
Phone: +49 351 260 - 3709