Absolute method of calibration of a Faraday microbalance

✍ Scribed by A. Rais

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 309 KB
• Volume: 35
• Category: Article
• ISSN: 0263-2241
• DOI: 10.1016/j.measurement.2003.08.010

✦ Synopsis

Calibration curves for standard 177 mm Henry profile pole caps of an electromagnet coupled to a Faraday vacuum microbalance are obtained from absolute magnetic susceptibility measurements. The pole caps are at gaps of 4.0, 4.5 and 5.0 cm for maximum magnetic field strengths ranging from 173 to 549 kA m À1 . Typical results on few standard substances are compared with reported values. An error less than 3% can be achieved for samples of limited size and sufficiently free from ferromagnetic impurities.