Abstract
An improvement of a Hartshorn type alternating current magnetometer is reported. The use of a dual channel oscillator, a two-phase lock-in amplifier and a personal computer enabled us to obtain a simple feedback system for automatic balancing of the bridge. The resolution of this system is about 3×10-7emu of magnetic moment or higher at the field of 0.8 Oe in amplitude and 159 Hz in frequency.
| Original language | English |
|---|---|
| Pages (from-to) | 208-209 |
| Number of pages | 2 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 29 |
| Issue number | 1 R |
| DOIs | |
| Publication status | Published - Jan 1990 |
| Externally published | Yes |
Keywords
- Ac susceptibility
- Hartshorn bridge
- High temperature superconductor
- Magnetization measurement
- Magnetometer
- Spin glass
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
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Cite this
Ikeda, N., & Kohn, K. (1990). A Simple Alternating Current Magnetometer of the Automatic Balancing Type. Japanese Journal of Applied Physics, 29(1 R), 208-209. https://doi.org/10.1143/JJAP.29.208