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

Diamagnetism01:26

Diamagnetism

Materials consisting of paired electrons have zero net magnetic moments. However, when these materials are placed under an external magnetic field, the moments opposite to the field are induced. Such materials are called diamagnets. Diamagnetism is the response of the diamagnets when placed in an external magnetic field.
Diamagnetism was discovered by Anton Brugmans in 1778 when he observed that bismuth gets repelled by magnetic fields, thus theorizing that diamagnets get repelled by magnets.
Magnetic Field of a Solenoid01:18

Magnetic Field of a Solenoid

A solenoid is a conducting wire coated with an insulating material, wound tightly in the form of a helical coil. The magnetic field due to a solenoid is the vector sum of the magnetic fields due to its individual turns. Therefore, for an ideal solenoid, the magnetic field within the solenoid is directly proportional to the number of turns per unit length and the current. Conversely, the magnetic field outside the solenoid is zero.
Consider a solenoid with 100 turns wrapped around a cylinder of...
Ferromagnetism01:31

Ferromagnetism

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...
Divergence and Curl of Magnetic Field01:26

Divergence and Curl of Magnetic Field

The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows:
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

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...

You might also read

Related Articles

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

Sort by
Same author

Search for long-lived doubly charged Higgs bosons in pp collisions at sqrt[s] = 1.96 TeV.

Physical review letters·2005
Same author

Measurement of B(t --> Wb)/B(t--> Wq) at the collider detector at fermilab.

Physical review letters·2005
Same author

Multiple primary digital apocrine sweat gland carcinosarcoma in a cat.

The Veterinary record·2005
Same author

Measurement of the W(+)W(-) production cross section in pp collisions at square root[s]=1.96 TeV using dilepton events.

Physical review letters·2005
Same author

Search for anomalous kinematics in tt dilepton events at CDF II.

Physical review letters·2005
Same author

Measurement of the cross section for prompt diphoton production in pp collisions at square root of s=1.96 TeV.

Physical review letters·2005

Related Experiment Video

Updated: Jul 28, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Structural and magnetic properties of multi-core nanoparticles analysed using a generalised numerical inversion

P Bender1, L K Bogart2, O Posth3

  • 1Department CITIMAC, Faculty of Science, University of Cantabria, 39005 Santander, Spain.

Scientific Reports
|April 12, 2017
PubMed
Summary

This study reveals the structure and magnetic behavior of multi-core magnetic particles. Iron oxide nanoparticle cores are concentrated in poly(styrene) spheres, showing interactions beyond simple models.

More Related Videos

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

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

Related Experiment Videos

Last Updated: Jul 28, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition
10:45

Stable Aqueous Suspensions of Manganese Ferrite Clusters with Tunable Nanoscale Dimension and Composition

Published on: February 5, 2022

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

Area of Science:

  • Materials Science
  • Nanotechnology
  • Magnetism

Background:

  • Magnetic multi-core particles combine magnetic nanoparticles with polymer spheres.
  • Understanding their structure and magnetic interactions is crucial for applications.

Purpose of the Study:

  • To determine the structural and magnetic properties of iron oxide/polystyrene multi-core particles.
  • To investigate the distribution of magnetic cores within the polymer spheres.
  • To analyze magnetic interactions between the cores.

Main Methods:

  • Numerical inversion of small angle scattering (SAS) and isothermal magnetization data.
  • Indirect Fourier transform (IFT) of static light scattering (SLS), small-angle X-ray scattering (SAXS), and small-angle neutron scattering (SANS) data.
  • Transmission electron microscopy (TEM), X-ray diffraction (XRD), and asymmetrical flow field-flow fractionation (AF4) for physical characterization.

Main Results:

  • Pair distance distribution functions revealed iron oxide cores concentrated in the outer layers of polystyrene spheres.
  • Apparent moment distributions, derived using the same numerical approach as IFT, correlated with intrinsic core moments.
  • Deviations from non-interacting behavior, indicated by additional peaks, suggest weak dipolar interactions.

Conclusions:

  • The study successfully characterized the structure and magnetic properties of magnetic multi-core particles.
  • The findings provide insights into core distribution and inter-particle magnetic interactions.
  • This methodology offers a unified approach for analyzing structural and magnetic data.