Overview
The PPMS System-DynaCool is an open architecture, variable temperature and field system designed to perform a variety of scripted and automated magnetic and physical property measurements. As the next generation PPMS, this system runs without the use of liquid cryogens.
Common Research Applications
Magnetic properties: magnetic DC and AC susceptibility, magnetometry
Thermal properties: heat capacity, thermal transport, cryo-FMR
Electric properties: DC and AC resistance, electro transport
Specifications
Cryogen free
Capable of 24/7 continuous operation
Measurement temperature range of 1.8 to 400 K with measurement sweep rate of 0.01 to 10 K/min
Continuous Low-Temperature Control (CLTC) for precise and uninterrupted operation below 4.2 K
Applied field strength of ± 9 Tesla
Field uniformity of ± 0.01 % over 5.5 cm
Measurement Options
Heat Capacity
The Heat Capacity option for the PPMS will run fully automated relaxation heat capacity measurements under high-vacuum.
Measures sample masses from 1 to 500 mg
Resolution of 10 nJ/K at 2 K
Dilution Refrigerator for temperatures below 1.8 K (minimum 50 mK)
Heat Capacity brochure
AC Susceptibility
The AC Measurement System (ACMS) option can perform both AC susceptibility and DC magnetisation measurements without changing between hardware. A single automated measurement system is capable of both.
AC frequencies from 10 Hz to 10 kHz and field amplitudes from 0.05 Oe to 15 Oe
AC susceptibility measurement sensitivity of 1 x 10-8 emu at 10 kHz
DC magnetisation measurement sensitivity of 5 x 10-6 emu
Dilution Refrigerator for temperatures below 1.8 K (minimum 50 mK)
ACMS brochure
Vibrating Sample Magnetometry
The Vibrating Sample Magnetometry (VSM) option enables magnetisation measurements as a function of temperature or magnetic field.
Oscillation amplitude of 0.1 mm to 5 mm
Oscillation frequency of 10 Hz to 60 Hz
Noise levels of <6 × 10-7 emu at 300 K
VSM brochure
DC Resistivity
The DC Resistivity option adds resistance bridge capabilities to the instrument providing four independent channels for van der Pauw and four-wire resistance measurements.
Up to three samples can be loaded and measured simultaneously
Resistance range of 10 μΩ to 5 MΩ in a standard 4-probe configuration
Current range of 2 nA to 8 mA
15 nV sensitivity
He-3 refrigerator for temperatures below 1.8 K (minimum >0.4 K)
DC Resistance brochure
Thermal Transport
The Thermal Transport Option (TTO) measures a sample's thermal conductivity, Seebeck coefficient and electrical resistivity simultaneously with a single sequence command for characterisation of thermoelectric materials.
Automated calculation of the thermoelectric figure of merit
Thermal conductivity estimated dynamic range of 0.1 to 250 W/m.K at 300 K
Seebeck coefficient estimated dynamic range of 1 μV/K to 1 V/K
Electrical resistivity estimated dynamic range of 10 μΩ to 5 MΩ
TTO brochure
Electrical Transport
The Electrical Transport Option (ETO) enables AC resistance measurements over a wide range of resistance values and sample types.
Measures resistances of 10 μΩ – 10 MΩ in a standard 4-probe configuration
Measures resistances of 2 MΩ – 5 GΩ in the high-impedance 2-probe configuration
Automated I-V curve collection can be used to screen for ohmic contacts
ETO brochure
Dilution Refrigerator
The Dilution Refrigerator option for the PPMS allows access to a temperature range of 4 K down to 50 mK.
Base temperature (50 mK) reached in approximately 5 hours from 300 K
Compatible with Heat Capacity, DC Resistivity and AC Susceptibility
Dilution Refrigerator brochure
Ferromagnetic Resonance
The CryoFMR probe enables measurement of the Ferromagnetic Resonance (FMR) response of a material at variable temperatures and sample orientations parallel or perpendicular to the DC field.
Pressure Cell
The Transport Pressure Cell option for the PPMS enables up to two 4-probe electrical transport measurements at high pressures up to 2.7 GPa.
Manufacturer's website
