This is to announce that a low temperature Seebeck coefficient Standard Reference Material (SRM™ 3451) is available from NIST. SRM 3451 allows members of the thermoelectric materials community the means to calibrate Seebeck coefficient measurement equipment (for bulk materials) in the temperature range 10 K to 390 K.
SRM 3451 is a bar-shaped artifact (approximately 3.5 mm x 2.5 mm x 8.0 mm) of non-stoichiometric bismuth telluride (n-type, Te rich, Bi/Te ratio approximately 2/3, formula Bi2Te3+x). Certification measurements were performed using a differential steady state (DC) technique with a two probe arrangement. An interpolation function is provided for intermediate temperatures values between the thirty two base temperature values measured. The availability of this SRM will validate measurement results, leading to a better understanding of the structure/property relationships and underlying physics of potential high efficiency thermoelectric materials.
For purchase information, please contact:
SRM Standard Reference Materials® Program NIST
100 Bureau Drive, Stop 2300
Gaithersburg, MD 20899-2300
Phone: (301) 975-2200
Fax: (301) 948-3730