index

Characterisation

 
 

Equipment Available for Measuring Magnetic Properties

( Including Joint Magnetism Lab with Fraunhofer IWKS at TU Darmstadt )

• QD 14 Tesla PPMS – Systems

  • Superconducting Magnetic Assembly
  • Vacuum / Exchange Gas Assembly
  • Temperature Control Assembly

• QD 14 Tesla PPMS – Options

• AC / DC MAGNETIZATION

  • Temperature Range: 1.9 – 350 K
  • AC Frequency Range: 10 Hz to 10 kHz
  • AC Field Amplitude Range: 2 mOe to 15 Oe
  • DC Magnetization Measurements: 2.5 x 10-5 emu to 5 emu
  • AC Susceptibility Measurements:2 x 10-8 emu @ 10 kHz

• VSM measurement parameters

  • Temperature Range: 1.9 – 350 K
  • VSM oscillation frequency: 40 Hz
  • VSM oscillation amplitude: 2 mm peak

• TORQUE MAGNETOMETRY (to be used with horizontal rotator)

  • Temperature Range: 1.9 – 350 K
  • Sample Size: up to 2 x 2 mm2
  • Sample Mass : up to 10 mg (depending on anisotropy)

• ELECTRO-TRANSPORT (to be used with horizontal rotator)

  • Noise: HGA 0.5 nV/√Hz @ 1kHz (typ.),
  • 1 nV/√Hz (maximum) PGA
  • 5 nV/√Hz @ 1kHz (typ.),10 nV/√Hz (maximum)

• THERMAL MEASUREMENTS

  • Temperature Range: 1.9 – 400 K
  • Sample Size: 1 – 200 mg (20 mg, typ.)
  • Heat Capacity resolution: 10 nJ/K @ 2 K
  • Measurement Accuracy: < 5%, 2–300 K < 2%, typ
  • Working Pressure: < 0.01 mTorr (with charcoal holder)

• THERMAL TRANSPORT OPTION

  • Thermal conductivity
  • Seebeck coefficient
  • Electrical resistivity
  • Thermoelectric figure of merit

• In-house developed insert for magnetostriction measurements

  • Simultaneous measurements
  • Single sample characterization
  • Uniform same conditions
  • Precise temperature control

• HMD Pressure Cell

  • Maximum Applied Pressure – 1.3 GPa
  • Sample Space Diameter – 1.7 or 2.2 mm
  • Sample Space Length – 7 mm max
  • Cell Diameter – 8.5 mm
  • Temperature Range – 1.9 to 400K

• QD PPMS 14 – AFM / MFM

• Atomic & Magnetic Force Microscope

  • Temperature: 1.9 K – 400 K
  • Field: ± 14 T

• LakeShore Vibrating Sample Magnetometer (VSM)

  • Possible Measurements: M(T), M(H), M(angle)
  • Fields from -2 T to 2T with field resolution of 0.1 Oe
  • Temperatures of 77 K to 400 K (Cryo) and 300 K to 1273 K (Oven)
  • Angle rotation of 360°

• Metis

  • Hysteresis measurements in external fields of 0 – 7 T
  • Temperature range: 0 – 180 °C

• Magneto-Optical Kerr Microscope

  • Field dependent measurements up to 3 kOe
  • In-plane rotational and perpendicular field options
  • In-plane Halbach setup. On/off field 1.3 T
  • Heating stage: 300 K to 875 K
  • Cryostat: 4 K to 325 K

• Anton Paar Rheometer

  • Torque 10 bis 100.000 mPa*s
  • Temperature -30 ° bis 150 °C
  • Frequency 10-4 bis 100 Hz
  • Shear stress 10E-3 bis 105 Pa
  • Shear rate 10-6 bis 105 s-1
  • Viscosity 0,5*103 bis 8,5*108 Pa*s

• Helmholtz Coil Set

  • High precision measurements of the open circuit remanent polarization for magnets up to 70 mm x 94 mm (height x diameter)
  • For measurement of the magnetic moment of magnetized parts and for generation of homogeneous magnet fields with easy access.
  • Inner diameters from 20 – 1040 mm
  • X-Y and X-Y-Z coils are also available. Typical serial coils are the following types: MS 20, MS 75, MS 150, MS 210

• Field Strength Meter H1 – 4

  • Digital display hand-held instrument fed by power supply, battery or accumulator. Switchable between AC and DC measurement.
  • Best resolution:  10µT
  • 3 ranges:  20mT, 200mT, 2T

• Δ T Rig

  • Measurement of adiabatic temperature change
  • Field 0 – 1,9 T
  • Temperature range: 77 K – 450 K

• SEM EDX

  • Tungsten Cathode 0,2 – 30 KeV
  • BSE YAG – Detector
  • EDX 30 mm2 SD – Detector

•Magnetic Hyperthermia Research System

  • Vacuum isolated calorimeter for heating response measurements in magnetic colloids. Field up to 350 G and frequency up to 402 kHz
  • Accessory for cell culture experiments in a controlled atmosphere and temperature
  • Thermal image system for real time surface imaging with an IR camera