Quantum Design’s MPMS 3 results from four decades of design and manufacture in Superconducting Quantum Interference Device (SQUID) magnetometry.
The MPMS 3 provides users with the sensitivity of a SQUID magnetometer and the option of multiple measurement modes, offering new levels of performance in magnetic research while retaining the features of previous Quantum Design SQUID magnetometers that customers have grown to appreciate and rely on.
It includes significant advancements in temperature management, data acquisition, and magnetic field control, with a ≤10-8 emu sensitivity. The MPMS 3's award-winning design has additional software functionality inside its easy-to-use MultiVu interface.
Uniting the maximum degree of system performance with the ability to utilize all previously available MPMS measurement methods, the Quantum Design MPMS 3 is the future of advanced SQUID magnetometry.
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Features
- Multiple measurement modes (DC, VSM, and AC Susceptibility)
- Software controls for temperature and magnetic field to automate complex data acquisition operations
- Cryogen Free with EverCool®
- SQUID Sensitivity
- 7 Tesla Magnet with QuickSwitchTM technology
- Maximum ramp rate: 700 Oe/sec
- Temperature Range: 1.8 – 400 K with Rapid TempTM
- 300 to 1.8 K in 25 min. (typical)
DC Measurement Modes
SQUID-VSM
- < 1×10-8 emu (≤ 2,500 Oe), < 8×10-8 emu (> 2,500 Oe)
- 0.1 to 8 mm variable oscillation amplitude allows for a vast dynamic range
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Traditional DC Scan
- < 5×10-8 emu (≤ 2,500 Oe), < 6×10-7 emu (> 2,500 Oe)
- 10× faster data acquisition as compared to MPMS-XL
- Perfect for measurements with the Helium-3 Refrigerator, FOSH, Horizontal Rotator, and Pressure Cell
- 2 emu maximum moment
Image Credit: Quantum Design International
Available Measurement Options
AC Susceptibility
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The AC Susceptibility option enables the experimenter to determine the dynamic (real and imaginary) response of a wide range of samples, including nanoparticles, spin glasses, and superconductors.
- AC Frequency Range: 0.1-1000 Hz
- AC Field Amplitude: 0.1-10 Oe
- Use with sample holder
Ultra-Low Field (ULF)
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The ULF option actively cancels the remaining magnetic field in the superconducting solenoid by utilizing a bespoke fluxgate field sensor, in-situ concentric modulation, and trim coils. It also allows the experimenter to set fields to +/- 25 Oe.
- Field uniformity: +/- 0.05 Oe
- Field nulling window: +/- 10 mm
- Can be utilized with any sample holder or measurement mode
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Sub-Kelvin Capabilities
Helium-3 Refrigerator
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The iQuantum Helium-3 refrigerator lowers the minimum temperature for DC and AC moment measurements to below 0.5 K.
- Continuous operation down to 0.5K
- < 3 hour cooldown time, 10 hours of 3He lifetime
- Suitable for DC Scan and AC Susceptibility measurements
High Temperature Oven
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The Oven option supports magnetometry at temperatures ranging from 315 to 1000 K. The sample temperature is locally heated and sensed using a unique alumina sample holder with an integrated resistive heater and temperature sensor.
- High-temperature Zircar cement and copper radiation shields for sample mounting are included in the user kit as standard equipment
- Moment Sensitivity 1·10-6 emu for H≤2500 Oe and 8·10-6 emu for H>2500 Oe
- Compatible with traditional DC Scan, SQUID-VSM, AC Susceptibility (<10 Hz), ULF
Electrical Transport
AC Resistance (ETO)
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The Electrical Transport Option (ETO) allows for AC resistance measurements on samples utilizing a 4-wire arrangement; for samples with higher resistances, a 2-wire high-impedance mode is available. Signals from two channels can be gathered simultaneously. An additional voltage pass-through enables voltage-controlled magnetism research.
- Measure resistances up to 5 MΩ in standard 4-wire mode
- The high-impedance 2-wire mode allows for the measurement of resistances between 2 MΩ and 1 GΩ
- Automated I-V curve collection can be used to screen for ohmic contacts
- Differential (dV/dI) resistance measurement mode
- Compatible with traditional DC Scan, SQUID-VSM, AC Susceptibility (<10 Hz), ULF
Sample Rotation
Rotator
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The Rotator provides magnetometry as a function of angle, covering more than 360 °. A newly constructed sample rod and stepper motor enable automated integration with MultiVu. Two-rotor geometries provide many sample mounting options for fully characterizing anisotropic materials.
- Range: More than 500 °
- Step Size: 0.1 ° (typical)
- Compatible with traditional DC Scan and ULF
Photomagnetism
Fiber Optic Sample Holder (FOSH)
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The Fiber Optic Sample Holder (FOSH) allows light to enter the sample area during a measurement.
- Specialized sample rod and holder transmit a broad range of light
- A standardized fiber connection ensures compatibility with multiple light sources
- Compatible with traditional DC Scan, AC Susceptibility, ULF
Light Sources
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The MPMS 3 sample space has two broadband xenon light sources accessible for experiments that need illumination:
- The TLX120Xe uses a 100 W source and incorporates a motorized monochromator so that a MultiVu sequence command can be used to choose the light wavelength
- To pass specific light wavelengths, the MLS 300 W source has a manual selection filter wheel
High Pressure
Pressure Cell
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HMD, a renowned Japanese pressure cell manufacturer, manufactures the magnetometry pressure cell. To reach the maximum allowable pressure of 1.3 GPa, a simplified design does not require copper sealing rings or a hydraulic press.
- Materials for the manometer: lead (Pb) and tin (Sn)
- BeCu structure provides a minimum, uniform magnetic backdrop
- Compatible with traditional DC Scan, AC Susceptibility (<10 Hz), ULF