Evidence map›Paper›PMID 41682589›Full record

ArticleSensors (Basel, Switzerland)2026

Scanning Magnetic Microscopy Using a High-Sensitivity Room-Temperature Tunnel Magnetoresistance Sensor for Geological Applications.

Hirokuni Oda, Kosuke Fujiwara, Naoto Fukuyo, Hitoshi Kubota, Tomohiro Ichinose, Mikihiko Oogane, Seiji Kumagai, Hitoshi Matsuzaki, Taizo Uchida, Miki Kawabata and 1 more

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Sensors (Basel, Switzerland), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Hirokuni OdaResearch Institute of Geology and Geoinformation, Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba 305-8567, Ibaraki, Japan.ORCID 0000-0001-7142-9208
Kosuke FujiwaraSpin Sensing Factory Corp., Sendai 980-0845, Miyagi, Japan.ORCID 0009-0002-7873-9393
Naoto FukuyoResearch Institute of Geology and Geoinformation, Geological Survey of Japan (GSJ), National Institute of Advanced Industrial Science and Technology (AIST), Central 7, 1-1-1 Higashi, Tsukuba 305-8567, Ibaraki, Japan.ORCID 0000-0003-2718-2943
Hitoshi KubotaResearch Institute for Hybrid Functional Integration, National Institute of Advanced Industrial Science and Technology (AIST), Central 2, 1-1-1 Umezono, Tsukuba 305-8568, Ibaraki, Japan.ORCID 0000-0002-2362-3505
Tomohiro IchinoseResearch Institute for Hybrid Functional Integration, National Institute of Advanced Industrial Science and Technology (AIST), Central 2, 1-1-1 Umezono, Tsukuba 305-8568, Ibaraki, Japan.ORCID 0000-0002-8158-1606
Mikihiko OoganeDepartment of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Miyagi, Japan.ORCID 0000-0001-8056-2051
Seiji KumagaiSpin Sensing Factory Corp., Sendai 980-0845, Miyagi, Japan.ORCID 0000-0003-3552-9628
Hitoshi MatsuzakiSpin Sensing Factory Corp., Sendai 980-0845, Miyagi, Japan.
Taizo UchidaApplied Science Program, Graduate School of Integrated Arts and Sciences, Kochi University, 2-5-1 Akebonocho, Kochi 780-8520, Kochi, Japan.ORCID 0000-0001-9927-7103
Miki KawabataApplied Electronics Laboratory, Kanazawa Institute of Technology, Kanazawa 920-1331, Ishikawa, Japan.
Jun KawaiApplied Electronics Laboratory, Kanazawa Institute of Technology, Kanazawa 920-1331, Ishikawa, Japan.ORCID 0000-0002-1402-2652

Funding

Cabinet Office, Government of Japan Quantum Spin Sensor μ‑Module Integration and Use‑Case Creation Project (BRIDGE Program)Cabinet Office, Government of Japan SIP3 quantumFY2025 Matching Research Support Project between Tohoku University and AIST Development of a Room‑Temperature Operable Magnetic Microscope and Its Applications to Resource Science and Earth and Planetary SciencesJapan Society for the Promotion of Science 21H04523
6 · The paper itself

Abstract

This paper reports magnetic microscopy using high-sensitivity room-temperature tunnel magnetoresistance (TMR) devices for thin geological sections. The sensitivity region of the TMR sensor has dimensions of 178 µm (L) × 0.1 µm (W) × 100 µm (H), consisting of two TMR devices. Magnetic images were obtained for a vertically magnetized Hawaii basalt thin section in two sensor configurations, with the sensor length aligned parallel to the X- (lift-off = 174 μm) and Y-axes (lift-off = 200 μm), without introducing anisotropic distortion in the magnetic images. Although the magnetic images obtained with a scanning SQUID microscope (SSM) were similar, slight discrepancies were observed in the high-spatial-resolution region. A magnetic point source (50 μm × 50 μm) with a perpendicular magnetization film was prepared for evaluation. The SSM measurements showed a clear magnetic dipole at an angle of approximately 1° from the vertical direction. The FWHMs for both the SSM and TMR sensors increased linearly with lift-off. However, the peak magnetic fields, magnetic moments, and dipole tilts of the TMR sensor were significantly larger than those of the SSM sensor. This discrepancy may be due to the vertical extent of the active region of the TMR sensor, as well as due to sensor noise and drift.

Indexed as

calibrationfrequency responsegeological thin sectionmagnetic point sourcescanning magnetic microscopysensor characteristicssuperconducting quantum interference device (SQUID)tunnel magnetoresistance (TMR) sensor

Identifiers

PMID41682589
PMCPMC12900083

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.