Noise in the measurements of magnetic susceptibilities

✍ Scribed by Dijk, H. H. J. ;Poulis, J. A. ;Hooge, F. N.

• Publisher: Springer
• Year: 1976
• Tongue: English
• Weight: 308 KB
• Volume: 32
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00411781

✦ Synopsis

Three methods of measuring diamagnetic susceptibilities are compared with respect to sensitivity.

(1) The balance method is limited in sensitivity by thermal noise with a signal to noise ratio SNR of 3 x 108.

(2) The inductance method is limited by the Nyquist noise with an SNR of 5 x 104.

(3) The magnetometer method is very insensitive with an SNR of 40 due to Barkhausen noise.