Functional Materials
A vibrating-sample magnetometer (VSM) is a scientific instrument that measures magnetic properties.
Technical specifications
QD 14 Tesla PPMS – Systems
The PPMS is an automatic low-temperature and magnet system for measuring material properties such as specific heat, magnetic AC- and DC- susceptibility and electrical and thermal transport properties (such as the Hall effect, thermoelectric effectiveness and the Seebeck effect).
AC / DC MAGNETIZATION
VSM measurement parameters
Torque Magnetometry (to be used with horizontal rotator)
Electro-Transport (to be used with horizontal rotator)
Noise
Thermal Measurements
Thermal Transport Option
In-house developed insert for magnetostriction measurements
HMD Pressure Cell
The magnetic interaction between the magnetic tip and the sample can be used to reconstruct the magnetic domain structure of the sample surface and provide magnetic force gradient information. Through the dual pass mode, it is possible to separate the influence of topography features and the magnetic response.
The attoAFM/MFM Ixs (attocube systems) can be operated inside of the PPMS, which allows a flexible range for in-situ experiments.
Technical specifications:
The magneto-optical Kerr microscope is used, with the help of the magneto-optical Kerr effect, to image magnetic domains. If linearly polarized light is radiated onto a magnetic solid, the magnetization influences the polarization state of the reflected light. After reflection, the light is generally elliptically polarized.
Technical specifications
With a pulsed magnetometer physical properties like remanence, coercivity and maximum energy product (BH)_max can be measured. The measurement is carried out in an open circuit by variation of the external field. The advantages of the measurement technique are the short measurement time and high external fields.
Technical specifications
For high precision measurements of the magnetic moment of magnetized parts and for generation of homogeneous magnetic fields with easy access.
Technical specifications
Vacuum isolated calorimeter for heating response measurements in magnetic colloids
With accessory for cell culture experiments in controlled atmosphere and temperature, and a thermal image system for real time surface imaging with an IR camera.
Technical specification
A device that is used to determine the deformation and flow behavior of matter.
Technical specification
Optical emission spectrometry with inductively coupled plasma is used to determine how much of certain elements are in a sample (samples are dissolved in a suspension). The ICP-OES technique base on the fact that atoms and ions can absorb and emit energy to move electrons between the ground state and an excited state. The characteristic emission spectra are detected by a CID-detector in axial or radial position to the plasma. ICP-OES allows trace element analysis and accurate determination of the chemical composition of materials. Solid materials must first be brought into suspension. A microwave digestion system is available for the preparation of solid materials.
ICP-OES: iCAP PRO XP Duo from Thermo Scientific
Digestion: Ethos.lab from MLS-MWS Laboratory solutions
Wavelengths:
Plasma view: radial or axial
Elemental range: Starting from Li, excluding mainly gases (N2, O2…)
Thermoanalytical technique for reaction enthalpies for determining phase transitions and heat capacities in temperature ranges from -120°C up to 1500°C.
The 4 point measurement method is a method to determine the sheet resistance, i.e. the electrical resistance of a surface or thin layer.
Energy-dispersive X-ray spectroscopy (EDX) is an analytical technique used for the elemental analysis or chemical characterization of a sample. It relies on an interaction of some source of X-ray excitation and a sample. Its characterization capabilities are due in large part to the fundamental principle that each element has a unique atomic structure allowing a unique set of peaks on its electromagnetic emission spectrum (which is the main principle of spectroscopy). The peak positions are predicted by the Moseley's law with accuracy much better than experimental resolution of a typical EDX instrument.
Technical specification
Device for measuring the adiabatic temperature change.
Technical specification
oliver.gutfleisch@tu-...
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fax +49 6151 16-22145
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