Superconducting quantum interference device microsusceptometer balanced over a wide bandwidth for nuclear magnetic resonance applications

被引：0

作者：

Vinante, A. ^{[1
]}

Mezzena, R. ^{[2
]}

Falferi, P. ^{[1
]}

机构：

[1] Fdn Bruno Kessler, CNR, Ist Foton & Nanotecnol, I-38123 Povo, Trento, Italy

[2] Univ Trento, Dipartimento Fis, I-38123 Povo, Trento, Italy

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2014年 / 85卷 / 10期

关键词：

INTEGRATED DC SQUID; NOISE;

D O I：

10.1063/1.4898177

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Superconducting Quantum Interference Device (SQUID) microsusceptometers have been widely used to study magnetic properties of materials at microscale. As intrinsically balanced devices, they could also be exploited for direct SQUID-detection of nuclear magnetic resonance (NMR) from micron sized samples, or for SQUID readout of mechanically detected NMR from submicron sized samples. Here, we demonstrate a double balancing technique that enables achievement of very low residual imbalance of a SQUID microsusceptometer over a wide bandwidth. In particular, we can generate ac magnetic fields within the SQUID loop as large as 1 mT, for frequencies ranging from dc up to a few MHz. As an application, we demonstrate direct detection of NMR from 1H spins in a glycerol droplet placed directly on top of the 20 mu m SQUID loops. (C) 2014 AIP Publishing LLC.

引用

页数：7

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