The Bx component of the field is uniform to +/-1% in a planar, thin volume of 2 x 10 x 0.2mm (x, y, z) which is particularly appropriate for studies of in-plane effects in planar samples oriented parallel to the Electromagnet surface.

Bx can be computer or manually controlled over the range of +/-0.4T (4000G) at z = 2mm from the Electromagnet surface, decreasing to a range of +/-0.1T(1000G) at z = 12mm.

The Bz component of the field approaches a range of +/- 0.30T (3000G) as the distance X(mm), x=0 being an equidistant distance between the two poles, at +/-5mm. As the x distance approaches 0 the Bz component of the field also approaches 0.

Small size and low weight enable the 5201 to be mounted in any orientation on standard transverse and rotary motion stages for accurate control of the projected field in position and angle with respect to the sample. The 5201 projected field can be introduced into a vacuum chamber or cryostat via a reentrant tube of 100mm (3.9inch) inside diameter and an appropriate non-magnetic window.

Poles are interchangeable and are available with an axial access bore. The 5203 can be mounted in any orientation and light weight (2.5kg) allows the magnet to be integrated into dynamic applications such as wafer testing.

Custom pole extensions may be located on the pole faces in order to achieve desired field properties for a specific application. The 5204 can be mounted in any orientation and the light weight (2.5kg) allows the magnet to be integrated into dynamic applications such as wafer testing.

The 5205 can be mounted in any orientation and the light weight (1.3kg) allows the magnet to be integrated into dynamic applications such as wafer testing.

The 5205 is designed to operate up to 100°C in order to determine the performance of the device under test in both magnetic field and at temperature.

With a field settling time of <0.1sec for 1mT(10G) increments, a full ±50mT B loop can be measured in 20sec.

A B probe located at one end of the uniform field region provides an analog voltage output which tracks the central field to within ±1%. This can be used for field stamping of the measured parameters or for closed loop field control.

A clear cross-section between the Pole faces of 25m wide x 55m deep, provides space for an oven around the sensor array to enable sensor testing as a function of temperature.

Continuous operation at maximum field of 50mT requires only 22W power dissipation and the 5301 can be excited by a small, low cost, power amplifier and convection air cooled.

This Electromagnet System provides a unipolar field with manual or voltage programming of current. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of magnetic separation, magneto-optic and other magnetic characteristics where a bipolar field is not required. Options are available for axial holes for light entry and exit. A bipolar power supply system is also offered.

This Electromagnet System provides a bipolar field with computer control. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of Hall effect, magneto-optic and other magnetic characteristics. Options are available for axial holes for light entry and exit.

The 3460 has standard poles (16 or 37mm pole face) with finely adjustable pole gap from 0 to 34mm. Custom poles can be designed in order to provide specific field profiles.

The system is intended to be compatible with systems that already utilize GMW’s 3470 electromagnet.

The 3480 is shipped with a standard set of poles that optimize maximum field but several pole options are available. GMW can also design custom poles that achieve a specific performance. Poles are interchangeable and are available with an axial access bore.

The 3480 OG dipole electromagnet system is intended to provide an open geometry particularly suited to MOKE applications.

This Electromagnet System provides a bipolar field with computer control. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of Hall effect, magneto-optic and other magnetic characteristics. Options are available for axial holes for light entry and exit.

If a unipolar system is required, please go the Unipolar System page.

This Electromagnet System provides a bipolar field with computer control. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of Hall effect, magneto-optic and other magnetic characteristics. Options are available for axial holes for light entry and exit.

If a unipolar system is required, please go the Unipolar System page.

This Electromagnet System provides a unipolar field with manual or voltage programming of current. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of magnetic separation, magneto-optic and other magnetic characteristics where a bipolar field is not required. Options are available for axial holes for light entry and exit. A bipolar power supply system is also offered.

If a bipolar system is required, please go the Bipolar System page.

This Electromagnet System provides a unipolar field with manual or voltage programming of current. The Electromagnet has small size and low mass and can be readily mounted with any field direction. It is appropriate for laboratory or production-line measurements of magnetic separation, magneto-optic and other magnetic characteristics where a bipolar field is not required. Options are available for axial holes for light entry and exit. A bipolar power supply system is also offered.

If a bipolar system is required, please go the Bipolar System page.

The 5403AC Electromagnet is similar in design to the standard 5403 except that the poles and yoke are laminated for AC field applications. This magnet can be used for teaching, research and industrial applications where fast field ramping and settling is required.  The light weight allows it to be used on optical tables and the poles include provision for axial optical holes.

The 5403EG Electromagnet is an extended fixed gap C frame dipole electromagnet. This magnet is similar to the standard 5403 but has air-cooled coils to provide a larger clearance between the coils. It is used in research and industrial applications where a large pole gap and coil spacing is required for the sample or ancillary equipment.  It can be operated to high current for intermittent operation or low current for continuous operation. The light weight allows it to be used on optical tables or production test equipment and the simple poles enable axial entry & exit holes to be matched to the optical geometry.

This Electromagnet System achieves true bipolar operation with computer control. It is particularly suitable where a smaller, lighter, lower cost magnet is required for Hall effect studies, magneto-optic measurements on an optical table, high temperature superconductor investigations and B-H characteristics at higher fields. The system can be run at 50A continuously or to  ±70A at lower duty cycle. For larger pole gaps up to 150mm, refer to the Model 5403EG Extended Gap Electromagnet. A laminated Electromagnet, 5403AC, for pulse or AC operation is also offered.

This Electromagnet System achieves true bipolar field with computer control. It is particularly suitable for Hall effect studies, magneto-optic measurements and high temperature superconductor investigations. Options are available for higher fields at reduced pole gaps (e.g. 1.5T at a 19mm or 0.75 inch gap with 38mm pole face diameter) axial holes for light entry and exit, and unipolar power supplies. For larger pole gaps up to 150mm, refer to the Model 5403EG Extended Gap Electromagnet. A laminated Electromagnet, 5403AC, for pulse or AC operation is also offered.

This Electromagnet System achieves true bipolar field with computer control. It is particularly suitable for Hall effect studies, magneto-optic measurements and high temperature superconductor investigations, and when full loop measurements have to be made in much less than a second. Three different Pole face dimensions are available: 10mm face diameter for Pole gaps to about 10mm; 30mm face diameter for Pole gaps to about 30mm; 60mm face diameter for Pole gaps to the maximum of 60mm. With 10mm Pole face diameter and Pole gap of 10mm peak fields of ±2T are achieved with a 4T transition time of 0.1sec (40T/sec).