7700A Electromagnet Series

7700A Electromagnet Series

The 7700 Series HMS is discontinued. No new orders are being accepted. We encourage you to consider the 8400 Series HMS instead.

Features of the 7700A Series

  • Standard sample resistance ranges from 0.04 mΩ to 200 GΩ
  • Fields to >2 T
  • Temperatures from 15 K to 800 K
  • Measure up to 6 in wafers
  • Quantitative Mobility Spectrum Analysis (QMSA®) software resolves individual carrier mobilities and densities in multi-carrier devices
  • Anomalous Hall Effect measurements for spintronics including dilute magnetic semiconductors and ferromagnetic metallic alloys

Backed and supported by nearly two decades of expertise in materials characterization systems, Lake Shore’s fully integrated Hall effect measurement systems (HMS) are used to characterize physical properties in semiconductors, as well as other electronic materials including magnetoresistors, multilayer magnetic films, dilute magnetic semiconductors, superconductors, and spintronics devices. Available in a variety of electromagnet-based configurations ranging in field up to 2 T or a powerful 9 T superconducting magnet-based configuration, Lake Shore HMS are ideally suited for the most demanding materials research applications, product development, and quality control. An assortment of options expands the functionality of Lake Shore HMS.

Modern materials ranging from compound semiconductors to nanomaterials are pushing the limits of transport measurements. Lake Shore combines precision electronics, flexible software, variable magnetic field and temperature, and a wide resistance range into the most advanced HMS. When used in combination with data taken from the variable field Hall measurement, our proprietary Quantitative Mobility Spectrum Analysis (QMSA®) software resolves individual carrier mobilities and densities in multi-carrier devices such as quantum wells and high electron mobility transistors (HEMTs).

​Please note: the AC measurement option is no longer available for the 7700A Series