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Related Concept Videos

Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Magnetic Fields01:27

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
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...
Magnetic Vector Potential01:15

Magnetic Vector Potential

In electrostatics, the electric field can be written as the negative gradient of the potential. In magnetostatics, the zero divergence of the magnetic field ensures that the magnetic field can be expressed as the curl of a vector potential. This potential is known as the magnetic vector potential.
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Magnetic Field Due To A Thin Straight Wire01:27

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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.
Magnetic Force01:18

Magnetic Force

In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...

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Updated: Jun 10, 2026

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
13:58

Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

Published on: September 28, 2016

Magnetic silicon fullerene.

Jing Wang1, Ying Liu, You-Cheng Li

  • 1Department of Physics, and Hebei Advanced Thin Film Laboratory, Hebei Normal University, Shijiazhuang 050016, Hebei, China.

Physical Chemistry Chemical Physics : PCCP
|August 18, 2010
PubMed
Summary
This summary is machine-generated.

A novel europium-encapsulating silicon fullerene, Eu@Si(20), is the most stable silicon structure. This fullerene and its derived nanowires exhibit significant magnetic properties for spintronics and data storage applications.

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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

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Fabrication of Magnetic Nanostructures on Silicon Nitride Membranes for Magnetic Vortex Studies Using Transmission Microscopy Techniques
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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
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All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

Area of Science:

  • Materials Science
  • Computational Chemistry
  • Condensed Matter Physics

Background:

  • Fullerene-like silicon structures are of interest for novel material properties.
  • Encapsulating metal atoms within silicon cages can significantly alter electronic and magnetic characteristics.

Purpose of the Study:

  • To predict and characterize a stable metal-encapsulating silicon fullerene.
  • To investigate the magnetic properties of the proposed structure and its potential for applications.

Main Methods:

  • Density Functional Theory (DFT) calculations were employed to predict and analyze the structure and properties.
  • Symmetry analysis (D(2h)) was used to describe the Eu@Si(20) fullerene geometry.

Main Results:

  • Europium-encapsulating silicon fullerene, Eu@Si(20), identified as the most stable fullerene-like silicon structure.
  • The central europium atom possesses a large magnetic moment (approx. 7.0 Bohr magnetons).
  • A stable "pearl necklace" nanowire formed by Eu@Si(20) units retains high spin magnetic moments.

Conclusions:

  • Eu@Si(20) represents a highly stable silicon fullerene with significant magnetic properties.
  • The magnetic nanowire structure shows promise for spintronics and high-density magnetic storage applications.