Introduction

Braginski, A. I.; Clarke, John

doi:10.1002/3527603646.ch1

Cited by 81 publications

(109 citation statements)

References 0 publications

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…Indeed, since the response of the SQIF is non-periodic in magnetic field, there is no need of a feed-back loop to maintain a fixed functioning point. Not only the absolute value of the magnetic field can be therefore measured, but the band-width of the device is not limited by the feed-back electronics anymore (typically a few MHz usually [4]). In addition, one can chose the arrangement of the SQUIDs in the array to match the impedance of the device to the read-out system.…”

Section: Introductionmentioning

confidence: 99%

High-Tc superconducting quantum interference filters (SQIFs) made by ion irradiation

Ouanani

Kermorvant

Ulysse

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Abstract.Superconducting Quantum Interference Filters (SQIFs) are arrays of superconducting loops of different sizes including Josephson Junctions (JJ). For a random distribution of sizes, they present a non-periodic response to an applied magnetic field, with a large transfer function and a magnetic field sensitivity potentially improved with respect to that of a single SQUID. Such properties make SQIFs interesting devices arXiv:1603.07592v2 [cond-mat.supr-con] 1 Jun 2016High-Tc Superconducting Quantum Interference Filters (SQIFs) made by ion irradiation2 to detect the magnetic component of electromagnetic waves at microwave frequencies.We have used the highly scalable technique of ion irradiation to make SQUIDs and SQIFs based on commercial YBa 2 Cu 3 O 7 films, and studied their properties. Both display optimum performances as a function of temperature and bias current, that can be understood in the frame of numerical simulations that we developed. The role of asymmetries and dispersion in JJ characteristics (routinely found in High Tc Superconductors technologies) is also studied. We have found that both do not impede the existence of a SQIF effect but play a role on the emergence of the optimal point. We finally present results on SQIF made with 2000 SQUID in series, showing a transfer function dV /dB ∼ 1000V /T .

show abstract

Section: Introductionmentioning

confidence: 99%

High-Tc superconducting quantum interference filters (SQIFs) made by ion irradiation

Ouanani

Kermorvant

Ulysse

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Superconducting quantum interference devices (SQUIDs) are the most sensitive magnetometers available for making quantitative measurements of magnetic fields [ Braginski and Clarke , 2004; Wikswo , 2004]. Over the last two decades, SQUID moment magnetometers, which typically measure the three components of the moment of a ∼1 cm 3 sample with a sensitivity of 10 −12 Am 2 [ Clem et al , 2006; Fagaly , 2006], have become standard in state‐of‐the‐art paleomagnetics laboratories.…”

Section: Introductionmentioning

confidence: 99%

Paleomagnetic analysis using SQUID microscopy

et al. 2007

View full text Add to dashboard Cite

[1] Superconducting quantum interference device (SQUID) microscopes are a new generation of instruments that map magnetic fields with unprecedented spatial resolution and moment sensitivity. Unlike standard rock magnetometers, SQUID microscopes map magnetic fields rather than measuring magnetic moments such that the sample magnetization pattern must be retrieved from source model fits to the measured field data. Here we present the first direct comparison between paleomagnetic analyses on natural samples using joint measurements from SQUID microscopy and moment magnetometry. We demonstrate that in combination with a priori geologic and petrographic data, SQUID microscopy can accurately characterize the magnetization of lunar glass spherules and Hawaiian basalt. The bulk moment magnitude and direction of these samples inferred from inversions of SQUID microscopy data match direct measurements on the same samples using moment magnetometry. In addition, these inversions provide unique constraints on the magnetization distribution within the sample. These measurements are among the most sensitive and highest resolution quantitative paleomagnetic studies of natural remanent magnetization to date. We expect that this technique will be able to extend many other standard paleomagnetic techniques to previously inaccessible microscale samples.

show abstract

“…Bicrystal grain boundary SrTiO 3 (STO) substrates are commonly used for the HTS-SQUIDs [1]. Fabrication process of single-layer HTS-SQUID based on the bicrystal STO substrates is simple, and offers relatively good characteristics [2]. Therefore, HTS-SQUIDs with bicrystal Josephson junctions have been widely utilized in many field of such as non-destructive inspection (NDI), magnetocardiogram (MCG), geophysical exploration and nuclear magnetic resonance (NMR)/magnetic resonance imaging (MRI) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%