Seebeck System from MMR Technologies

MMR Technologies' Seebeck System is a small and compact device for conducting experiments using MMR Technologies’ cryogenic cooling and Joule-Thompson thermal stage systems, integrated with the Seebeck vacuum chamber.

The Seebeck System provides excellent, precise and highly reproducible Seebeck coefficient measurements of 50 nV. The samples (ranging from metals to thin films) are easy to measure.

The entire operation is automatic and can be performed in one step against an internal reference material. The completely automated control has a built in reference. Both low temperature and high temperature stages are provided.

The SB1000 digital Seebeck controller is about 1/4 the size in comparison to the earlier model SB100 controller, thus exhibiting only a small footprint.

Key Features

The main features of Seebeck System include:

  • Allows real-time voltage monitoring
  • Better hardware communications for better experiment precision
  • Better speed for data collection
  • Better CMR ADC stability for facilitating high-precision measurements
  • Standalone Seebeck experiments at ambient temperature –
  • Link cable to connect the SB1000 to the K2000 controller for better temperature control
  • Chamber hot swap support
  • Computer interface for integrated software control through RS-232C or USB connections
  • Combined software suite to match both K2000 and SB1000 controllers

Applications

The applications of the Seebeck System include:

  • By performing temperature dependent thermoelectric power (thermopower) measurements on electrically conductive specimens one can obtain data about the sign of the majority carrier, the mechanism of charge conduction, and in conjunction with appropriate theoretical models, information on the band structure of the material under investigation, offering highly precise, very stable controlled temperature in the range of 70K to 730K
  • Thermopower measurements can also help identify the intrinsic properties of samples having an electrical conductivity dominated by an extrinsic defect structure
  • A high sensitivity to structural change makes thermopower measurements a very good method for studying structural phase conditions on the charge transport properties of a specific material

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