Core Facilities


Physics of New Materials

Hybrid technologies integrating soft-chemical synthesis with mechanical activation and modern field-assisted processing are used to obtain solids with pre­defined nanostructures. Coatings, thin-films and multilayers are deposited by sputtering, spin-coating and spray-drying. Processing by field-assisted methods (microwaves; FAST/SPS in collaboration with FCT) are available. For the investigation of static and dynamic structures and properties, progressive laboratory methods (XRD + 2D Detector, XRR, AFM, MFM, MOKE) can be used. To investigate phase transitions and thermal expansion high temperature DSC and DIL are at hand. State-of the art, synchrotron radiation methods including inelastic and nuclear resonant scattering are performed at the Hasylab in Hamburg, ESRF in Grenoble, Spring8 in Japan and APS in USA.

a) Synthesis and Processing:

Hybrid technologies integrating soft-chemical synthesis with mechanical activation and modern field-assisted processing are used to obtain solids with predefined nanostructures.
Coatings, thin-films and multilayers are deposited by sputtering, spin-coating and spray-drying. Processing by field-assisted methods ( FAST/SPS , microwaves) are available.

b) Investigations of structure and properties

For the investigation of static and dynamic structures and properties, progressive laboratory methods (XRD + 2D Detector, XRR, AFM, MFM, MOKE) can be used.
To investigate phase transitions and thermal expansion high temperature DSC and DIL are at hand.
State-of the art, synchrotron radiation methods including inelastic and nuclear resonant scattering are performed at the Hasylab in Hamburg, ESRF in Grenoble, Spring8 in Japan and APS in USA.

more about a)

Facilities, Devices and Instruments for Synthesis and Processing

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Mini Spray Drying B-290 (BÜCHI Laborthechnik AG)
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  • drying aqueous or organic solutions, emulsions, suspension, dispersion etc.
  • evaporation of moisture from an atomised feed by mixing the spay and the drying medium (air)
  • applications:
    - spray drying
    - micronizations
    - micro encapsulation
    - englobing
  • max. inlet temperature: 220°C
  • max. evaporation output: 1.0 kg H2O/h
  • spraying gas: compressed air 200 - 1000 litre/h, 5 - 8 bar
High-performance cyclone
small cyclone with higher recovery rate, connection seal, screw cap and product receiving vial for small quantities
 
Outlet filter
  • filter to protect aspirator and ambient from fine particles
  • one polyester deep-bed filter and one PTFE membrane filter for product recovery included
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Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

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Arc melting (Bühler MAM-1)
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Metallic alloys and precursors for ball-milling processing may also be prepared using arc melting
  • amount of approx. 10 - 20 g
  • temperature till 3500°C
  • water-cooled Cupper crucible plate
  • tungsten firing pin
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Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

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High-energy ball-milling: planetary ball-mill (RETSCH PM 400)
  • comminution / mechanical alloying of powder precursors
  • pulverizes and mixes soft, medium-hard to extremely hard, brittle and fibrous materials
  • high speed of 30 to 400 min-1 in combination with the very large sun wheel diameter of 300 mm guarantee extremely high fineness in a short time
  • 4 grinding stations for grinding jars with a nominal volume of 12 to 500 ml
  • reproducible results due to energy and speed control
  • direction reversal
  • sample environment : liquid, inert gas (with special vials)
  • grinding bowls: stainless steel, WC, ZrO2, sintered Al2O3
  • Material feed size* < 10 mm
  • Final fineness* < 1 µm, for colloidal grinding < 0.1 µm (*depending on feed material and instrument configuration/settings)
Text: Eileen Otterstein, Photo: Sabine Radtke (Nov. 2008)
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Glove-box with air-cleaning filter (M.Braun LABMASTER 130)
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Text: Eberhard Burkel, Photo: Eberhard Burkel (Nov. 2012)

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Magnetron-sputtering
Leybold LAB 500
 
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High-vacuum HV magnetron sputtering (Leybold):
  • HV deposition of ultrathin films & multilayer systems.
  • simultaneous thin-film deposition from 5 sputtering targets possible.
  • in-situ thermal annealing
  • reactive sputtering under Argon or Oxygen atmosphere
Leybold Heraeus Z400
 
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Text: Eileen Otterstein, Enrico Buchholz (Nov., Dec. 2008) Photo: Sabine Radtke (Nov. 2008)

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Laboratory press (P-O-Weber)
Nanostructured powder materials can be consolidated into bulk parts (pellets up to 4 cm diameter) using a 450 kN hydraulic press (P-O-Weber).
External heating under applied pressure (close to 1 GPa) is used to further assist sintering to full density.
  • sample environment: air, vacuum
  • temperature: up to 500°C depending on specimen size.
More photos of this device and equipment
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Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

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Tycho Sinter Laboratories Rostock
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Spark Plasma Sintering facility Tycho Sinter Laboratories Rostock (FCT-equipment) with rapid gas cooling

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Text: Eberhard Burkel, Photos: Eberhard Burkel (2012)

 
Nabertherm Sinter and Temper Stove
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Sinter and temper furnaces in vacuum and protective atmosphere (Nabertherm RHTH 120-600/18)

Text: Eberhard Burkel, Photo: Eberhard Burkel (2012)

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High-precision crystal cutter (DISCO DAD 320)
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Automatic dicing saw
  • 20-500 μm gap width,
  • 30.000 turns/min
  • water cooling system
Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

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Diamond band saw (Dramet BS270S)
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Diamond band saw

Text: Eberhard Burkel, Photo: Eberhard Burkel (2012)

 

more about b)

Facilities, Devices and Instruments for Investigations of structure and properties

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Bruker AXS D8 Discover diffractometer with GADDS
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Measurements produced by GADDS System
  • structure analysis of powder materials and small bulks
  • Phase identification, Phase quantification, Texture, Stress, Single Crystal Diffraction, Small Angle X-ray Scattering
  • fast real-time data collection with unique HI-STAR area detector
  • simultaneous large chi and 2θ data acquisition for fast powder and texture investigations
  • highly intense, point-like parallel beam using cross-coupled Göbel Mirrors
  • kinetic studies of phase transitions
Pictures from and produced with Bruker AXS D8 Discover diffractometer with GADDS
Text: Eileen Otterstein, Photo: Sabine Radtke (Nov. 2008)

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X-ray Reflexion (XRR) (BRUKER)
  • grazing incidence X-ray diffraction
  • uses small incident angles for the incoming X-ray, so that diffraction can be made surface sensitive
  • used to get information like
  • thickness
  • roughness
  • density
  • from thin films of 0.1 nm to 100 nm
Pictures from and produced with X-ray Reflexion (XRR)
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Text: Enrico Buchholz (Dec. 2008), Photos: Sabine Radtke (Nov. 2008)

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High-temperature heat-flux Differential Scanning Calorimeter (NETZSCH Pegasus 404C)
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  • kinetics of phase transitions
  • stability, phase transitions, crystallization, melting
  • temperature : RT - 1600°C
  • sample environment : inert gas, vacuum
  • corundum (Al2O3) and platinum (Pt) crucibles
  • heating and cooling rates : 0.1 up to 20 K/min
More pictures fom this device and Comparison of DSC signals of Platinum and Corundum Crucibles
Text: Eileen Otterstein, Photo: Sabine Radtke (Nov. 2008)

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High-temperature Dilatometer (NETZSCH DIL 402C)
  • thermal expansion
  • kinetics of phase transitions
  • temperature: RT - 1600°C
  • sample environment : inert gas, reactive gas, vacuum
  • heating rate: < 5 K/min
More photos and figures of measurements
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Text: Eileen Otterstein, Photo: Sabine Radtke (Nov. 2008)

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Scanning Probe Microscope (SPM) SOLVER
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  • study of properties of the surface at nanometer scale
  • visualizing and performing quantitative measurements of mechanical (hardness, elasticity, viscidity), electrical (conductivity, capacity, distribution of surface charge) and magnetic properties of the sample
  • working with sizes from several microns to angstrom
  • combination of AFM (Atomic Force Microscope) and MFM (Magnetic Force Microscope)
  • sample environment: air, controlled atmosphere and liquids
Presentation of Nano Particles created with SMP and more photos of the Scanning Probe Microscope
Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

 
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MOKE- setup ( Magneto-Optic Kerr Effect)
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  • with polarisator, analysator, electromagnet and HeNe-laser
  • with 2 Tesla electromagnet

Cryostat to combine MR and MOKE measurements (MR: magneto resistance; MOKE: Magneto-Optic Kerr Effect)
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Concurrent illustration of MOKE and MR measurement
 
Text: Eileen Otterstein, Photos: Sabine Radtke (Nov. 2008)

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Mössbauer-effect spectroscopy (CEMS)
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Text: Eberhard Burkel, Photo: Sabine Radtke (2003)

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Optical microscopy: polarisation-light microscope with digital camera (Olympus)
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OLYMPUS Stereo microscop SZX 9
with optical beam splitter and C-5050Z Digital Zoom Camera
 
More photos
Text: Eileen Otterstein, Enrico Buchholz (Nov., Dec. 2008), Photos: Sabine Radtke (Nov. 2008)

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Micro- and nanoindenter (CETR)
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Micro- and nanoindenter (CETR)

Text: Eberhard Burkel, Photo: Eberhard Burkel (2012)

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Micromeretics ASAP 2020
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Micromeretics ASAP 2020 , Surface and Porosity Analyzer by Physi- and Chemisorption

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Text: Eberhard Burkel, Photos: Eberhard Burkel (2012)

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Quadtech 7600
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Quadtech 7600 Precision LCR Meter

Text: Eberhard Burkel, Photos: Eberhard Burkel (2012)

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High-temperature Vacuum furnace (Neytech QeX)
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  • computer controlled operation: temperature-time heating and cooling profiles, thermal cycles
  • thermal annealing (max. 1200°C)
  • sample environment : inert gas, vacuum
  • max. specimen size : diameter = 10,0cm, height = 6,3cm

Text: Eileen Otterstein, Photo: Sabine Radtke (Nov. 2008)

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Spincoater P6700 SCS Coating
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rotating disk → photo
 
Deposition of films and thick coatings from sol-gel precursors, liquids and polymers
Text: Eileen Otterstein, Enrico Buchholz (Nov., Dec. 2008), Photos: Sabine Radtke (Nov. 2008)

 
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