Physics Laboratory

Physical Property Measurements in a cryogen-free System

base system specifications

• temperature range 1.8K – 400K
• magnetic field ± 14 T
• field change rate 0.2 Oe/s – 100 Oe/s
• high vacuum < 0.1mTorr

available options

• vibration magnetometry (VSM)
• AC Susceptibility (ACMS II)
• thermal capacity
• DC resistance
• electrical transport / AC resistance (ETO)
• thermal transport (TTO)
• dilatometry
• horizontal rotator for transport measurements
• hydrostatic pressure cell for magnetometry (1.3 GPa) and transport and resistance measurements (2.7 GPa)
• Van der Pauw – Hall transport
• synchronous source and measurement system M81 SSM from LakeShore (DC/AC transport)
• dilution refrigerator system (50 mK – 4 K) for heat capacity, electrical transport (ETO/resistance), AC susceptibility

Reflection and transmission measurements on solids, powders, thin films and capillaries

technical specifications

• x-ray tubes: Mo (λ = 0.711 Å) default, Cu (λ = 1.541 Å) upon request,
• angular range 2θ = -9° … 120°, d2θ = 0.005°
• detectors: GaliPIX3D (2d), X’Celerator (1d)
• optics: programmable divergence & anti-scatter slits, Bragg-BrentanoHD (Mo), focussing mirror (Mo), monochromator mirror (Cu), parallel beam mirror (Cu)
• sample stages: XYZ-table, reflection-transmission sample spinner, eulerian cradle, capillary , high & low temperature stages (Anton Paar: HTK 1200N, TTK 600)
• HTK 1200N: T = +25°C … +1200°C (vacuum/inert gas) for solid samples in reflection
• TTK 600: T = -10°C – 450°C (air-cooling with atmospheres: air, N2, inert gas), -20°C +600°C (air cooling with vacuum); sample holder options for solids, powders, coin cells in reflection or transmission and capillaries in transmission

coming soon

technical specifications

• x-ray tube: Cr (λ = 2.290 Å)
• angular range 2θ
• 1/4-circle eulerian cradle (χ = -48° … +45°, ψ = 0 … 360°)
• XYZ-table (X = ± 75 mm, Y = ± 75 mm, Z = 0 … 13 mm)
• detector: Dectris Mythen 1K (1d)

Measurements

• thickness, density, roughness (thin films), phase identification
• thin films, powder samples
• reflection and transmission measurements in θ-2θ-geometry

technical specifications

• x-ray tube: Cu (λ = 1.541 Å)
• angular range 2θ = -10° … 160°, d2θ = 0.003°
• optics: parallel beam mirror
• stages: vacuum table (reflection) default, powder spinner (reflection/transmission) upon request,
• sample alignment in z = -20 mm … +1.5 mm, 𝛘 = ±7°, ϕ = 360°, variable knife edge collimator
• detector: Mythen2 R 1K (1d)

(outsourced to Prof. Müller-Buschbaum, TUM Physik E13)

technical specifications

• SAXS: Pilatus 2D detector 84 × 34 mm²
• WAXS: 1D wide angle detector, 2θ = 18° … 30°
• in-situ annealing of solid-, liquid- or powder samples, T = -20°C … +300°C

sensor types: DTA, DSC, DSC-cp

technical specifications

• max. temperature: 1600°C
• heating/ cooling Rate: 0,001 K/min

technical specifications

• cyclic voltammetry: I = 1 nA … 400 mA, dI = ± 760 pA, 5 µV, 20 µs
• impedance spectroscopy: 10 µHz – 1 MHz
• current boosters: 4 A and 100 A

technical specifications

• fully automated upright microscope system
• illumination and imaging methods: bright- & darkfield, polarization-, phase-, differential-interference-contrast (DIC), multifocus, in reflection and transmission
• Leica LAS software

The HB05 is an ultrasonic (63 kHz) wire bonder offering a high-precision X-Y-puck and Z-lever, colluding with a fully digital control of all parameters, such as force, ultrasonic, time & temperature. It offers a reliable wire/ribbon handling through vertical feed and motorized clamp.

available options

• wedge, ball, bump & stitch bonds
• d = 33 µm Al-wire
• d = 25 µm Au-wire

technical specifications

• max. temperature: 1500°C (air), 1350°C (vacuum)
• sample enviroment: vacuum < 10^-4 mbar, inter gas (N₂, Ar)
• inner dimensions: ⌀ 50 mm x 450 mm

technical specifications

• usable space (w x d x h) 170 mm x 80 mm x 90 mm
• max. operating temperature 1200°C
• max. working temperature 1150°C
• heating time 60 min Tmin to Tmax -100 K
• temperature distribution in empty working chamber +/- 5 K (>800°C)
• with gas connection for nitrogen and inert gases (not gas-tight)

technical specifications

• forced convection
• temperature range: 30 °C … 200 °C, dT = 1 K
• inner dimensions: 40 cm x 34 cm x 40 cm (L x B x H)

features

• rotational speed 100 to 650 1/min
• programmable interval and pause times
• timer programming precise to ± one second
• final fineness dry grinding up to d50 > 20 µm (depending on the material)
• final fineness wet grinding up to d50 > 1 µm (depending on the material)

available equipment

• grinding bowls zirconium oxide (12 ml) & hardened stainless steel (80 ml, 12 ml), tungsten oxide or higher volumen on demand
• grinding balls available in different materials and sizes.

PRESI Mecatome 210 – precission cutting machine

• serial cutting function
• discs for hard and soft materials
• cross table travel: 100 mm (X), 251 mm (Y)

ATM Opal 410 – hot mounting machine
ATM Saphir 520 – grinding and polishing machine

SPECAC Atlas 15T – manuel hydraulic press

• maximum load: 15 t
• pressing tools for pellet production