Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Ferromagnetism01:31

Ferromagnetism

2.9K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.9K
Magnetic Field Due To A Thin Straight Wire01:28

Magnetic Field Due To A Thin Straight Wire

6.0K
Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
6.0K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.2K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.2K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

4.3K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
4.3K
Magnetic Damping01:17

Magnetic Damping

973
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
973
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

6.2K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
6.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Robust magneto-optical temperature sensing using harmonics of magnetic loop characteristics.

The Review of scientific instruments·2026
Same author

Experimental Distributed Quantum Sensing in a Noisy Environment.

Physical review letters·2025
Same author

Read My Leads: Subject-Specific RF Hazard Assessment and Mitigation for DBS Implants in MRI.

Magnetic resonance in medicine·2025
Same author

Photon-Interfaced Ten-Qubit Register of Trapped Ions.

Physical review letters·2025
Same author

Access to Primary Healthcare by Ukrainian Beneficiaries of Temporary Protection in Rural Communities.

Irish medical journal·2025
Same author

Thin-film NiTi intrasaccular implant with flaps for aneurysm treatments.

Biomaterials advances·2025

Related Experiment Video

Updated: Jan 4, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.9K

Converse Magnetoelectric Composite Resonator for Sensing Small Magnetic Fields.

P Hayes1, M Jovičević Klug1, S Toxværd2

  • 1Institute for Materials Science, Kiel University, Kiel, 24143, Germany.

Scientific Reports
|November 10, 2019
PubMed
Summary

This study presents magnetoelectric thin film composites for passive magnetic field measurements. These composites achieve high sensitivity for DC and low-frequency fields without a bias field, enabling new biomagnetic applications.

More Related Videos

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.2K

Related Experiment Videos

Last Updated: Jan 4, 2026

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
07:01

Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples

Published on: June 9, 2016

9.9K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.6K
Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
07:42

Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

Published on: July 20, 2022

3.2K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Magnetoelectric (ME) thin film composites utilize piezoelectric (PE) and magnetostrictive (MS) layers for passive magnetic field detection.
  • Achieving high sensitivity typically requires a magnetic bias field to operate at the MS phase's maximum piezomagnetic coefficient.
  • Mechanical resonances enhance the direct ME effect but limit bandwidth and DC field detection.

Purpose of the Study:

  • To demonstrate converse ME modulation in mesoscopic Si cantilever composites.
  • To achieve high magnetic field sensitivity, particularly for DC and low-frequency fields.
  • To explore potential biomagnetic applications enabled by the novel sensor capabilities.

Main Methods:

  • Fabrication of thin film Si cantilever composites (25mm x 2.45mm x 0.35mm) with piezoelectric AlN and magnetostrictive FeCoSiB layers (2µm thickness each).
  • Utilizing a high-frequency mechanical resonance (approx. 515 kHz) for enhanced voltage induction.
  • Employing a surrounding pickup coil with matched self-resonance for signal detection.

Main Results:

  • Achieved strong induced voltages due to mechanical resonance, leading to field sensitivities up to 64 kV/T.
  • Demonstrated a DC limit of detection of 210 pT/Hz1/2.
  • Obtained a sensitivity of approximately 70 pT/Hz1/2 at 10 Hz without requiring a magnetic bias field.

Conclusions:

  • The developed converse ME composites offer high sensitivity for DC and low-frequency magnetic fields.
  • The absence of a bias field requirement simplifies device operation and broadens application scope.
  • These findings pave the way for advanced biomagnetic sensing and measurement technologies.