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A simple digital system for ac magnetic measurements on superconductors (1991)

Fabbricatore, P. ; Gambardella, U. ; Gömöry, F. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Review of Scientific Instruments 62 (1991), S. 1796-1800

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ISSN: 1089-7623

Source: AIP Digital Archive

Topics: Physics , Electrical Engineering, Measurement and Control Technology

Notes: This article describes a simple apparatus to perform ac inductive measurements on superconductors. The ac susceptibility, the penetrated and trapped magnetic flux and the magnetization of a sample placed in an ac magnetic field are measured by processing the signal induced in a pick-up coil that surrounds the sample. The complex harmonic analysis of the signal is also performed. The setup consists of an amplifier, a three-channel recorder, and a standard desktop computer. The main advantages of the apparatus are its simple design and low cost. Its main drawback is the noise affecting the signals. Tests were performed on a high Tc superconductor.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.1142424

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