Temperature Coefficient of Magnetic Permeability of Sheet Steel
- 1 February 1926
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 27 (2) , 183-188
- https://doi.org/10.1103/physrev.27.183
Abstract
The samples tested were annealed punched rings of commercial sheet steel such as is used in electrical apparatus, containing 0.9 to 4 percent silicon. Temperature coefficients were determined in the range from -20° to +46°C. As the induction was increased from 2 to 10 kilogausses, the coefficient decreased from +.12% per 1°C to -.021% for 0.9% Si, from +.08% to -.08% for 2.2% Si, and from -.03% to -.18% for 4% Si. Each curve showed a minimum at 10 kilogausses although the maximum permeability normally occurs at 6 to 8 kilogausses. This minimum corresponds to 2 gilberts per cm and is sharper the higher the Si content. These results indicate that the temperature coefficient is more directly related to the induction than to the permeability.Keywords
This publication has 2 references indexed in Scilit:
- Temperature coefficient of magnetic permeability within the working rangeBulletin of the Bureau of Standards, 1915
- On the best method of demagnetizing iron in magnetic testingBulletin of the Bureau of Standards, 1908