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

3.2K
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...
3.2K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.4K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.4K
Diamagnetism01:26

Diamagnetism

3.1K
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....
3.1K
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.5K
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...
2.5K
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current01:14

Diamagnetic Shielding of Nuclei: Local Diamagnetic Current

1.5K
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
1.5K
Metallic Solids02:37

Metallic Solids

21.0K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
21.0K

You might also read

Related Articles

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

Sort by
Same author

GmSPX5 regulates arbuscular mycorrhizal colonization and phosphate acquisition through modifying transcription profile and microbiome in soybean.

The Plant journal : for cell and molecular biology·2025
Same author

Unexpected Formation and Characterization of 1-(Alkylsulfonyl)alkyl Alkanethiosulfonates via Elimination of Alkanesulfinyl Chlorides.

Journal of agricultural and food chemistry·2025
Same author

Associations between element mixtures and biomarkers of pathophysiologic pathways related to autism spectrum disorder.

Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS)·2025
Same author

Targeting the selectivity filter to drastically alter the activity and substrate spectrum of a promiscuous metal transporter.

Chemical science·2025
Same author

Ultrasound-assisted enzymatic extraction optimization of Cistanche deserticola polysaccharides, and combined analysis of the relationship between polysaccharide structure and activity by liquid chromatography and GC-MS.

Journal of chromatography. A·2025
Same author

Electron Redistribution via LDH-to-DACs Coupling Enhances d-Band Regulation and Stability for Zinc-Air Battery Electrocatalysis.

ACS nano·2025

Related Experiment Video

Updated: Feb 23, 2026

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

4.6K

Metal-based magnetic fluids with core-shell structure FeB@SiO2 amorphous particles.

Mengchun Yu1, Xiufang Bian, Tianqi Wang

  • 1Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China. xfbian@sdu.edu.cn.

Soft Matter
|September 2, 2017
PubMed
Summary
This summary is machine-generated.

New metal-based magnetic fluids utilize iron-boron (FeB) amorphous particles coated with silica (SiO2) for enhanced high-temperature performance. These FeB@SiO2 particles offer superior magnetic properties compared to traditional iron oxide alternatives.

More Related Videos

Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

12.1K
Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

3.9K

Related Experiment Videos

Last Updated: Feb 23, 2026

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

4.6K
Simulation of the Planetary Interior Differentiation Processes in the Laboratory
06:04

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Published on: November 15, 2013

12.1K
Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks
05:26

Synthesis of Single-Crystalline Core-Shell Metal-Organic Frameworks

Published on: February 10, 2023

3.9K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Magnetism

Background:

  • Development of advanced magnetic fluids is crucial for high-temperature applications.
  • Iron-boron (FeB) amorphous particles offer potential for improved magnetic properties.
  • Silica (SiO2) coatings can enhance particle stability and modify magnetic characteristics.

Purpose of the Study:

  • To prepare and characterize novel metal-based magnetic fluids using FeB@SiO2 amorphous particles.
  • To evaluate the magnetic properties and high-temperature performance of these fluids.
  • To compare the performance of FeB@SiO2 based fluids with conventional magnetic materials.

Main Methods:

  • Synthesis of FeB amorphous particles and subsequent SiO2 coating.
  • Characterization of particle morphology, size, and core-shell structure using electron microscopy.
  • Magnetic property evaluation using Vibrating Sample Magnetometry (VSM).
  • Viscosity measurements at high temperatures using a torsional oscillation viscometer.

Main Results:

  • Spherical FeB amorphous particles with an average size of 190 nm were successfully synthesized.
  • A stable core-shell structure of FeB@SiO2 particles with ~40 nm SiO2 coating was achieved.
  • FeB amorphous particles exhibited high saturation magnetization (131.5 emu g⁻¹), significantly higher than Fe3O4.
  • FeB@SiO2 particles showed a saturation magnetization of 106.9 emu g⁻¹, a decrease attributed to the non-magnetic SiO2 layer.
  • The metal-based magnetic fluids demonstrated excellent high-temperature performance.

Conclusions:

  • FeB@SiO2 amorphous particles are suitable for creating high-performance metal-based magnetic fluids.
  • These fluids exhibit superior magnetic properties and stability at elevated temperatures.
  • The developed magnetic fluids are promising candidates for demanding high-temperature applications.