Physical Property Measurement System (PPMS®)

Quantum Design, Inc. Physical Property Measurement System (PPMS®) EverCool-II®

The Quantum Design PPMS represents a unique concept in laboratory equipment: an open architecture, variable temperature-field system, designed to perform a variety of automated measurements. Use the PPMS with our specially-designed measurement options, or easily adapt it to your own experiments. Sample environment controls include fields up to ±16 tesla and temperature range of 1.9 - 400 K. Its advanced expandable design combines many features in one instrument to make the PPMS the most versatile system of its kind.

Cryogen-Free Option Available Now! The Quantum Design PPMS EverCool-II® is an exciting cryogen-free enhancement to our industry-leading Physical Property Measurement System (PPMS) product line. Available in new systems, or as an upgrade to your existing PPMS.

PPMS Features

  • Sealed sample chamber with 2.6 cm diameter sample access.
  • EverCool-II cryogen-free cooling technology.
  • Versatile sample mounts couple easily to the 12 electrical leads built into the cryostat insert.
  • The PPMS is controlled by the Model 6000, a sophisticated microprocessor-controlled device that eliminates the need to use or purchase external bridges, current or voltage sources, or lock-in amplifiers.
  • Continuous Low-Temperature Control maintains temperature below 4.2 K and offers smooth temperature transitions when warming and cooling through 4.2 K.
  • Temperature Sweep Mode.
  • User Experiments External instruments may be controlled automatically using an integrated Visual Basic interface within our Windows-based MultiVu control software or by controlling external Visual C++, Delphi or Visual Basic programs. Click here for more details. In addition, our Grapher utility displays data as it is being collected.

 

PPMS Magnet Options

  • Select from 7, 9, 14 and 16 tesla magnets.
  • Or order a system with no magnet and add a magnet when needed.
  • A split-coil 7 tesla transverse magnet is also available.

 

Integrated PPMS Measurement Applications

Low Temperature Stages

Helium-3 Refrigerator Option

  • Continuous operation down to 0.5 K
  • Compatible with Heat Capacity, Electrical Transport and DC Resistivity measurements

Dilution Refrigerator Option

  • Continuous operation from 4 K down to 50 mK
  • Compatible with Heat Capacity, AC Susceptibility for DR, and Electrical Transport measurements

Adiabatic Demagnetization Refrigerator (ADR)

  • World’s fastest <100 mK cryogenic refrigerator for PPMS & DynaCool
  • From 300 K to <100 mK in <3 hours
  • Holds temperature below 1.9 K for more than 2 hours
  • Allows DC resistivity and Electrical Transport measurements
  • 8 leads allow for measurements of two samples simultaneously
  • Sample space: 23 mm diameter and 14 mm height
  • Allows ultra-low temperature measurements with lower financial investment
  • Measurements only in zero field
  • PPMS Requirements: High vacuum and DC resistivity

 

Thermal Measurements

Heat Capacity Option

  • Completely automated relaxation technique from 1.9 - 400 K
  • Integrated data acquisition electronics and analysis software

Thermal Transport Option

AC Resistivity ρ

  • Measured by using precision DSP current source and phase-sensitive voltage detection (AC Transport).

Thermal Conductivity κ

  • Measured by applying heat from the heater shoe in order to create a user-specified temperature differential between the two thermometer shoes.

Seebeck Coefficient α

  • Measured by creating a specified temperature drop between the two thermometer shoes - just as it does to measure thermal conductivity. However, for Seebeck coefficient the voltage drop created between the thermometer shoes is also monitored.

Thermoelectric Figure of Merit ZT

  • Determined here simply as the algebraic combination α2T /(κρ) of the three measured quantities - thermal conductivity, Seebeck coefficient, and AC electrical resistivity.

 

Magnetometry

Vibrating Sample Magnetometer Option (VSM)

  • RMS Sensitivity: < 10-6 emu with 1 sec averaging
  • Optional VSM Oven up to 1000 K

Torque Magnetometry Option

  • Measures the magnetic torque = mBsinθ
  • Designed to measure moments of very small anisotropic samples

AC Susceptibility Option (ACMS II)

  • AC Susceptibility
    • Sensitivity: 1 x 10-8 emu
    • Amplitude: 0.005 Oe – 15 Oe (peak)
    • Frequency Range: 10 Hz – 10 KHz
    • Direct phase nulling technique measures and cancels background AC phase shifts at every measurement
  • DC Magnetization
    • Sensitivity: 5 x 10-6 emu

AC Susceptibility Option for DR (ACDR)

  • AC Susceptibility
    • Drive Amplitude: 0.002 Oe – 4 Oe (peak)
    • Sensitivity: 5x10-7 emu
    • Phase Accuracy: 2°
    • Frequency Range: 10 Hz to 10 kHz
  • DC Field Range
    • Up to ±12T
  • Temperature Range
    • 50mK – 4K

Ultra Low Field Option (ULF)

  • Reduces residual field to < 0.1 G

Magneto-Optic Option

Sample Rods:

  • Choice of UV or IR Rod
    • UV >90% transmittance 325 nm - 900 nm
    • IR >90% transmittance 375 nm - 2250 nm
  • Sample holder volume 2.68 mm3
  • Moment Sensitivity <10-4 emu

Light Source:

  • Choice of 150 W or 300 W light source
  • Xenon Arc  Lamp
  • 10 position filter wheel
  • 9 bandpass filters (436 nm, 470 nm, 500 nm, 530 nm, 555 nm, 585 nm, 640 nm, 740 nm, 850 nm)

 

Electro-Transport

AC Transport Option

  • For performing AC Resistivity, Hall Effect, I-V Curve Tracing, and Critical Current measurements
  • 1 nV sensitivity, nΩ resolution at 2 A
  • Drive amplitude 10 μA to 2 A

DC Resistivity Option

  • Four independent channels for performing DC resistivity

Electrical Transport Option (ETO)

  • For performing AC Resistance, Hall Effect, I-V, and Differential Resistance (dV/dI vs. I) measurements.
  • 1nV sensitivity, 10 nΩ resolution at 100 mA
  • AC and DC drive amplitude 10 nA to 100 mA
  • Resistance ranges from 10 µΩ to 5 GΩ

Horizontal & Vertical Sample Rotators

  • Thermometer located on rotator platform.
  • Precision, stepper controlled rotator.

Multi-Function Probe

  • Direct axial ports to the sample stage are provided to install light pipes, fiber optic cables, microwave guides and/or extra electrical leads.

 

Microscopy

PPMS SPM by attocube Systems

PPMS SPM Features:

  • Unrivaled performance in the PPMS environment
  • Compatible with the PPMS operating range
    • Temperature: 1.9 K – 400 K
    • Field: ± 16 T
  • MFM resolution: Below 20 nm
  • Positioning range: 3 × 3 mm
  • Scanning range: 12 × 12 μm2

Microscopy options include:

  • Magnetic Force Microscope (attoMFM Ixs)
  • Atomic Force Microscope (attoAFM Ixs)
  • Scanning Hall Probe Microscope (attoSHPM xs)
  • Confocal Microscope (attoCFM xs)

 

High Pressure

High Pressure Cell for Magnetometry

Introducing a novel, high pressure cell for magnetometry that allows easier sample insertion and removal without the need of an hydraulic press. This pressure cell, manufactured by HMD, comes in a complete kit that contains all the accessories you will need to aid in the characterization of your samples.

Benefits of the HMD Pressure Cell:

  • All BeCu design for more uniform magnetic background
  • No copper ring seal ensures easy sample removal
  • All necessary accessories conveniently packaged
  • Compatible with VSM transport
  • No hydraulic press necessary

Specifications:

  • 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 – 1.8 to 400K

** Please Note: Requires VSM and Large Bore Coil Set **

 

Hydrostatic Pressure Cell for Electrical Measurements

Introducing a hydrostatic pressure cell for electrical measurements designed for use in all PPMS platform instruments (PPMS, DynaCool, VersaLab) . This pressure cell, manufactured by ElectroLab, is compatible with Quantum Design’s DC Resistivity, ACT and ETO measurement options.

Benefits of the ElectroLab Pressure Cell:

  • Based on BeCu pressure cell technology
  • Integrated external thermometer
  • 10 sample leads (5 twisted pairs)
  • Compatible with all QD PPMS platforms
  • Manufactured by the leading supplier of hydrostatic pressure cells in Japan
  • Several press sets also available

Specifications:

  • Maximum Applied Load – 3.0 GPa
  • Maximum Sample Pressure – 2.7 GPa
  • Sample Space Diameter – 4.0 mm
  • Sample Space Length – 6.0 mm max
  • Temperature Range – 1.9 to 400K

 

Spectroscopy

NanOsc FMR Spectrometers

The CryoFMR spectrometer is a plug and play system that allows broadband CPW-FMR characterization with lock-in capability. It includes its own RF frequency source as well as lock-in detection module, so that the only parts required to conduct an experiment are a computer for software control and a PPMS platform. Temperature range: 4 K to 400 K. Frequency Range 2 to 17 GHz.

 

Expension

Dilatometer Option

Measures relative expansion (dilation) and first derivative (coefficient of expansion) with respect to temperature and field, with sub-angstrom sensitivity. This is accomplished using a differential ratiometric capacitance bridge, operating at 2.340 kHz, which offers high sensitivity and dynamic range.