A SIMPLE DIGITAL SYSTEM FOR AC MAGNETIC MEASUREMENTS ON SUPERCONDUCTORS

被引：5

作者：

FABBRICATORE, P

GAMBARDELLA, U

GOMORY, F

MUSENICH, R

OCCHETTO, M

PARODI, R

POMPA, P

机构：

[1] Istituto Nazionale di Fisica Nucleare, Sezione di Genova, I-16146 Genova

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1991年 / 62卷 / 07期

关键词：

D O I：

10.1063/1.1142424

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

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 T(c) superconductor.

引用

页码：1796 / 1800

页数：5

共 9 条

[1] RESPONSE OF PINNED FLUX VORTICES TO LOW-FREQUENCY FIELDS [J].