A Coercimeter for Magnetically Weak Materials

Autor:	E. V. Potter, E. F. Coleman
Rok vydání:	1936
Předmět:	Range (particle radiation) Nuclear magnetic resonance Materials science Condensed matter physics Amplifier Thermionic emission Sensitivity (control systems) Coercivity Instrumentation
Zdroj:	Review of Scientific Instruments. 7:499-501
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1752072
Popis:	A form of coercimeter based on that of Davis and Hartenheim is described. By altering constructional features and using a direct‐coupled thermionic amplifier and microammeter for indicating balance, the accuracy and sensitivity of measurements on the coercive force of magnetically weak materials like slags are improved. A stable two‐stage amplifier makes the balance indication more sensitive by a factor of about 200. The range of application of the instrument is thus also extended to alloys of very low coercive force and to cases where the available sample is very small.
Databáze:	OpenAIRE
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