Transport Measurement Systems

XPLORE Physical Quantities Measurement System (PQMS) is an easy-to-use, versatile system for acquiring experimental plots of magnetic ac susceptibility and electrical resistance of your sample as a function of temperature in the range of 80-450K.

Product Info

Temperature Controlled Environment

  • Cryostat with double-walled insulation for improved temperature control
  • Temperature Range: 80-450K
  • Temperature Stability: ±0.1K

 

Magnetic Susceptibility Measurement

  • Non-magnetic primary & secondary windings
  • Enhanced sensitivity through excellent compensation
  • In-phase & 90° out-of-phase measurement

 

Electrical Resistivity Measurement

  • Four-Probe Insert designed for easy mounting of sample
  • Automatic cancellation of thermal voltages by current reversal (Δ-mode) for enhanced accuracy
  • Current and voltage ranges designed for resistances ranging over 17 orders of magnitude

 

Software Package

  • User-selectable temperature, current, and voltage sweep rates
  • Real time measurement, display, and recording of physical parameter values
  • Online plotting of R vs T, I vs V and χac vs T data

 

Specifications

 

 

Cryostat and temperature controller
Sample chamber
Dimension 21mm (dia) x 100mm (length), top loading
Construction Non-magnetic SS 316, double walled
Temperature range
Temperature range 80K-450K
Cryogen Liquid N2
Exchange gas Helium
Temperature measurement and control
Sensors Pt100
Temperature resolution 0.01K
Temperature stability Better than ±0.1K in isothermal mode
Temperature ramp-rate 1K/min-10K/min in steps of 0.1K/min
Control algorithm PID
PID parameters User configurable
Heater
Heater power 40 Watt
Winding type Non-magnetic Nichrome
Flushing System
Connection

4 independent on/off valves for heater

and sample chambers
Vacuum System
Zone Heater and/or sample chamber
Pressure 10-3 Torr
Mechanism Double Stage Rotary Pump
Sense Pirani Gauge with readout unit
Exchange Gas System
Zone Heater and/or sample chamber
Gas Helium
Cylinder Volume 10 Litres
Purity 99.99%
Accessories Pressure regulator and piping
Others
Computer connectivity USB
Software Development Kit (SDK) Python library for user programming
Liquid Nitrogen container 4 Litres (BA-3 from Indian Oil Corp. Ltd.)
Input Power 200 VAC to 240 VAC

 

4-probe Variable Temperature Insert
Mounting Area 25 mm x 15 mm
Mounting Glue GE varnish (supplied)
Contact Glue Silver Ink (supplied)
Connection Topology 2-probe or 4-probe
Base Insulator Kapton tape (supplied)
Temperature Range 80K to 450K

 

IV Source and Measurement Unit
Source mode Current or voltage
Current source specification
Current source range(s) ±100µA, ±1mA, ±10mA
Current setpoint resolution Better than 0.05% of full-scale
Voltage compliance ±10V
Voltage source specification
Voltage source range(s) ±10V
Voltage setpoint resolution Better than 0.005% of full-scale
Current compliance ±10mA
Ammeter specification
Current measurement range(s) ±100µA, ±1mA, ±10mA
Current measurement resolution 6½ digit
Volt-meter specification
Voltage measurement range(s) ±100mV, ±1V, ±10V
Voltage measurement resolution 6½ digit
Input impedance >1012Ω
Ohmmeter specification
Resistance measurement range(s) 0.01 Ω to 108 Ω with < 1% error
Resistance measurement resolution see Fig.1 XPLORE specification sheet
Others
Computer connectivity USB

 

Nano-voltmeter Unit
Volt-meter specification
Voltage Measurement Range(s) ±10mV, ±100mV, ±1V, ±10V, ±100V
Voltage measurement resolution 7½ digit
Input impedance >1012Ω
Voltage Protection 250 V

 

2-probe High Resistance Variable Temperature Insert
Mounting Area 10 mm x 18 mm
Mounting Glue GE varnish (supplied)
Contact Glue Silver Ink (supplied)
Connection Topology 2-probe
Base Insulator Teflon
Temperature Range 80K to 450K

 

 

High Resistance Measurement Unit
Source mode Voltage
Voltage source specification
Voltage source range(s) ±10V, ±100V
Voltage setpoint resolution Better than 0.005% of full-scale
Ammeter specification
Current measurement range(s) ±10nA, ±1µA
Current measurement resolution 6½ digit
Volt-meter specification
Voltage measurement range(s) ±100V
Voltage measurement resolution 6½ digit
Ohmmeter specification
Resistance measurement range(s) 105 Ω to 1013 Ω with < 1% error
Resistance measurement resolution see Fig.1 XPLORE specification sheet
Others
Computer connectivity USB
Software Development Kit Python library for user programming
Input Power 200 VAC to 240 VAC

 

χ-T Variable Temperature Insert
Sample
Maximum Sample Dimensions 5mm (dia) x 10mm (length)
Sample Form Powder or Solid in paper capsule
Sample Holder Non-magnetic glass fibre sleeve
Temperature Range 80K to 450K
Primary Coil Specification
Length 57 mm
Number of turns 1000
Average diameter 8.3 mm
H-field ~10 Oe pk-pk at 50 mA pk-pk current
Secondary Coil (2 Nos.) Specification
Length 10 mm each
Number of turns 3000 each
Average diameter 14 mm each

 

 

Lockin Amplifier
Primary Driver
Frequency range(s) 10Hz-10KHz
Reference output

Constant Voltage : 2V peak-to-peak

Constant Current : 50mA peak-to-peak
Reference generation Direct digital synthesis
Lock-in detection
Integration time 1 sec
Pre-amp gain(s) 1, 10, 100
Post-amp gain(s) 1, 10, 100
Input Ranges ±1mV, ±10mV, ±100mV, ±1V, ±10V
Measurement
Measurement resolution Amplitude : 6½ digit, Phase : 3½ digit
Measured quantities Both amplitude and phase
Others
Computer connectivity USB
Software Development Kit (SDK) Python library for user programming
Input Power 200 VAC to 240 VAC

 

Automatic Sample Positioner
Stroke length 60 mm
Positioning Accuracy Better than 100 micron
Speed 0.5 mm/sec
Limit Switch In-built optical sensor
Stall detection In-built optical sensor
Computer Connectivity USB

 

Magneto-resistance Insert
Mounting Area Circular, 19 mm dia
Magnetic field direction Perpendicular to mounting area
Mounting glue GE varnish (supplied)
Contact glue Silver ink (supplied)
Connection topology 2-probe or 4-probe
Base insulator Teflon
Temperature range 80K to 450K

 

Magnet Power Supply (MGPS)
Source mode Magnetic field or current
Magnetic field source specification
Magnetic field source range(s) ± 100mT (1000 Gauss)
Magnetic field set-point resolution Better than 0.05% of full-scale
Voltage compliance ± 15V
Current source specification
Current source range(s) ±6A
Current set-point resolution Better than 0.05% of full-scale
Voltage compliance ±15V
Gauss meter specification
Magnetic field measurement range(s) ± 100mT (± 1000 Gauss)
Current measurement resolution 6½ digit
Ammeter specification
Current measurement range(s) ± 6A
Current measurement resolution 6½ digit
Voltmeter specification
Voltage measurement range(s) ± 20V
Voltage measurement resolution 6½ digit
Input impedance > 1012 Ω
Others
Computer connectivity USB
Software development kit (SDK) Python library for user programming
Input Power (supplied) 200VAC to 240VAC
Data acquisition and control software: Qrius 1.1
Computer automation of R-T and χ-T measurements using above mentioned modules have been provided by Qrius 1.1 software. It allows easy control of all experimental parameters and real time recording and plot of physical quantities. The software runs on Ubuntu 12.04 and is provided on an easy-to-use, installable Live DVD.

 

Other user provided accessories required to run the system

The following is a list of accessories that need to be provided by the user for proper operation of XPLORE 1.1 PQMS setup.

  • Rotary vacuum pump with KF-25 bellow
  • Minimum of 3 liters of liquid nitrogen
  • Computer with DVD drive, USB 2.0 port, 2GB RAM, 100GB of hard-disk space and Pentium dual core or above processor

 

Documents

XPLORE PQMS Brochure (pdf)

XPLORE PQMS Specification Sheet (pdf)

For more information and purchase related queries, contact us here.