Nondestructive Evaluation Using a High-&lt;italic&gt;T&lt;/italic&gt;<sub>c</sub>SQUID Microscope

Faley, M.I.; Kostyurina, E. A.; Diehle, Patrick; Poppe, U.; Kovács, András; Maslennikov, Yu. V.; Koshelets, V. P.; Dunin-Borkowski, Rafal E.

doi:10.1109/tasc.2016.2631419

Cited by 7 publications

(8 citation statements)

References 18 publications

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“…The high-T c DC SQUID microscope developed at FZJ for studies of room temperature objects is based on a high-T c DC SQUID with a magnetic flux antenna and was described in detail in our previous publications [48,49,50] (see Figure 6). Here, we review it briefly, report new results obtained with the system and provide an outlook for further developments.…”

Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

“…The wear-out of stainless steel plates was simulated by scratching [50] the plates using a diamond tip or engraving by a diamond drill. The measured magnetic signal originates from inclusions of the ferromagnetic ά-martensite form of the steel crystalline structure, which appear as a result of the plastic deformation of austenite in the contact area due to tribological stressing [53].…”

Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

“…The dependence of magnetic domain structure in thin Fe films on the thicknesses of (SiGe) n barrier layers between them has been reported [54]. Magnetic stray fields originating from 30-nm-thick Co films fabricated using electron beam lithography on 50-nm-thick SiN membranes have been registered [50]. A measurement of the latter structure after demagnetization is shown in Figure 9.…”

Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

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Superconducting Quantum Interferometers for Nondestructive Evaluation

Faley

Kostyurina

Kalashnikov

et al. 2017

Sensors

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We review stationary and mobile systems that are used for the nondestructive evaluation of room temperature objects and are based on superconducting quantum interference devices (SQUIDs). The systems are optimized for samples whose dimensions are between 10 micrometers and several meters. Stray magnetic fields from small samples (10 µm–10 cm) are studied using a SQUID microscope equipped with a magnetic flux antenna, which is fed through the walls of liquid nitrogen cryostat and a hole in the SQUID’s pick-up loop and returned sidewards from the SQUID back to the sample. The SQUID microscope does not disturb the magnetization of the sample during image recording due to the decoupling of the magnetic flux antenna from the modulation and feedback coil. For larger samples, we use a hand-held mobile liquid nitrogen minicryostat with a first order planar gradiometric SQUID sensor. Low-Tc DC SQUID systems that are designed for NDE measurements of bio-objects are able to operate with sufficient resolution in a magnetically unshielded environment. High-Tc DC SQUID magnetometers that are operated in a magnetic shield demonstrate a magnetic field resolution of ~4 fT/√Hz at 77 K. This sensitivity is improved to ~2 fT/√Hz at 77 K by using a soft magnetic flux antenna.

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Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

Section: High-tc Squid Microscope System With a Ferromagnetic Fluxmentioning

confidence: 99%

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Superconducting Quantum Interferometers for Nondestructive Evaluation

Faley

Kostyurina

Kalashnikov

et al. 2017

Sensors

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“…As highly sensitive magnetometers, low‐ and high‐ T c SQUIDs find potential applications in multiple fields. In particular, they are being commercially employed in biomagnetism, geophysical measurements, nondestructive testing, and energy‐efficient monitoring of beam currents in ion accelerators . In biomagnetism, SQUIDs are being utilized for magnetic nanoparticle–based diagnostics and human imaging sensors such as magnetocardiography, magnetoneurography, and ultralow field nuclear magnetic resonance.…”

Section: Recent Progress In Applications Of Hts and Their Integrationmentioning

confidence: 99%

“…HTS allows for more compact and cheaper cryostats; hence, nondestructive testing based on high‐ T c scanning SQUID microscope for spatial imaging has been demonstrated. Examples for such nondestructive testing can be found in localization of buried defects in semiconductors, features in weld seams, and wear tracks . HTS SQUIDs were also found to be useful in performing AC impedance analysis.…”

Section: Recent Progress In Applications Of Hts and Their Integrationmentioning

confidence: 99%

Thin‐Film‐Based Integrated High‐Transition‐Temperature Superconductor Devices

Balasubramanian

Xing

Strugo

et al. 2019

Adv Funct Materials

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Since the discovery of superconductivity at temperatures above the technologically promising liquid nitrogen temperatures, applications based on superconductors have expanded and are being put to commercial use. However, superconductivity at higher temperatures typically occurs in complex materials requiring stringent material and environmental constraints. Such restraints make the realization and integration of these materials with normal materials a nontrivial aspect. In this progress report, unique features of these superconductors in terms of their synthesis, physical properties determining interface electrical transport, and their applications are discussed. A detailed progress report on these applications with remarks on efforts taken to integrate these devices with traditional platforms and semiconducting materials is provided.

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From colossal magnetoresistance to solar cells: An overview on 66 years of research into perovskites

Wagner

Wackers

Cardinaletti

et al. 2017

Phys. Status Solidi A

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Perovskites are a huge family of compounds to which the natural titanium mineral CaTiO 3 is the common ancestor. The cubic structure looks apparently simple, but the variety of metal ions and mixtures thereof that fit into a perovskite lattice is tremendous. Even in the case that the ionic radii do not allow for a perfect cubic ordering, there are various superstructures and orbital-ordering effects to cope elegantly with distortions. The compositional and structural flexibility offers a large toolbox to design and synthesize perovskites with tailored properties searched for by physicists, chemists, materials scientists and device engineers. These materials are equally of interest for fundamental studies and for applied research while both viewpoints cross-fertilize each other regularly. Our overview starts with the discovery of ferromagnetism in manganites in 1950 and ranges until 2016: Today, halide perovskites are fully in focus for their potential in photovoltaic applications. This is certainly not an endpoint, but another milestone in a long series of often-unexpected discoveries on an 'evergreen material'.Ball-and-stick model of the ideal cubic perovskite structure. The cation at the central position or 'B site' (small black dot) defines the group name (e.g., titanates) and plays a key role for the physical properties of the material.

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Nondestructive Evaluation Using a High-<italic>T</italic>_cSQUID Microscope

Cited by 7 publications

References 18 publications

Superconducting Quantum Interferometers for Nondestructive Evaluation

Superconducting Quantum Interferometers for Nondestructive Evaluation

Thin‐Film‐Based Integrated High‐Transition‐Temperature Superconductor Devices

From colossal magnetoresistance to solar cells: An overview on 66 years of research into perovskites

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Nondestructive Evaluation Using a High-<italic>T</italic>cSQUID Microscope

Cited by 7 publications

References 18 publications

Superconducting Quantum Interferometers for Nondestructive Evaluation

Superconducting Quantum Interferometers for Nondestructive Evaluation

Thin‐Film‐Based Integrated High‐Transition‐Temperature Superconductor Devices

From colossal magnetoresistance to solar cells: An overview on 66 years of research into perovskites

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Nondestructive Evaluation Using a High-<italic>T</italic>_cSQUID Microscope