Magnets

M-25 5000 Gauss Permanent Magnet

MMR's Model M-25 Benchtop Permanent Magnet has been designed for use with MMR's Variable Temperature Hall System; the VTHS refrigerator and Dewar mount between the poles of the magnet. The magnet may also be used for a variety of other laboratory applications. It requires neither water- nor fan-cooling. It is a compact, efficient magnet standing only 7.5" high, and it occupies only 4" x 3" of bench space. It provides a vertical field of 5000 gauss between flat 2.5" x 3.0" pole pieces with a 0.75" gap. The size of the gap has been designed specifically for a good fit with the Hall Dewar System.

 

Features

  • Pole Piece Dimensions: 2.5" x 3.0"
  • Pole Gap: 0.75”
  • Weight: 55 Kg (25 lb)

 

MK-50 5000 Gauss Electromagnet
with MPSK-50 Power Supply

MMR's Model MK-50 Benchtop Electromagnet has been designed for use with MMR's Variable Temperature Hall System; the VTHS refrigerator and Dewar mount between the poles of the magnet. The magnet may also be used for a variety of other laboratory applications. It requires neither water- nor fan-cooling. It is a compact, efficient magnet standing only 7.5" high, and it occupies only 10" x 16" of bench space. It provides a vertical field of 5000 gauss with a 0.75" gap at 8 amps. The size of the gap can be easily adjusted.

 

The magnet is designed to be used with MMR's MPSK-50 Programmable Power Supply, and the VTHS-D Hall System Dewar, to provide rapid and simple determination of Hall mobilities of semiconductors over a wide range of sample temperatures from 70 K to 730 K.

 

Features

  • Compatible with MMR MPSK-50 Magnet Power Supply
  • Reversal Time (+5000 to -5000 gauss): 2 seconds
  • Pole Gap: 0.75”
  • Operating Temperature: 0°C to 50°C
  • Chiller or Water cooling available through easy access back ports to extend operation time and minimize heat impact on experiment
  • Weight: 36.5 Kg (80 lb)

 

M-150 14000 Gauss Electromagnet
with MPS-150 Power Supply

MMR's Model M-150 Large Field Electromagnet is supplied with a 38 mm face diameter pole pair to provide the highest field versus current values. It provides a vertical field of 14000 gauss, operating with up to 40 amps of current. Higher current is possible but requires magnetic power supplies other than those provided by MMR Technologies. The size of the gap can be easily adjusted.

 

The magnet is designed to be used with MMR's MPS-150 Programmable Power Supplies, the C150 Chiller system, and the VTHS-D Hall System Dewar, to provide rapid and simple determination of Hall mobilities of semiconductors over a wide range of sample temperatures from 70 K to 730 K.

 

Features

  • Compatible with MMR MPS-150 Magnet Power Supply
  • Maximum Current: ± 40 amps at 20 Volts
  • Reversal Time (+14000 to -14000 gauss): 2 seconds
  • Pole Gap: 0.75”
  • Operating Temperature: 0°C to 50°C
  • Weight: 125 kg (275 lb)
  • Chiller or Water cooling available through easy-access back ports to extend operation time and minimize heat impact on experiment