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Related Concept Videos

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...
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...
Colors and Magnetism03:02

Colors and Magnetism

Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
Types Of Superconductors01:28

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
Fermi Level01:18

Fermi Level

The Fermi-Dirac function is represented by an S-shaped curve indicating the probability of an energy state being occupied by an electron at a given temperature. The Fermi level is the energy level at which there is a fifty percent chance of finding an electron, and it is positioned between the lower-energy valence band and the higher-energy conduction band.
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
Magnetic Field due to Moving Charges01:23

Magnetic Field due to Moving Charges

A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...

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Updated: May 17, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

Multiferroic-like Quasiparticles in Ferroelectrics.

Ping Tang1, Gerrit E W Bauer2

  • 1Tohoku University, Institute for Materials Research, 2-1-1 Katahira, Sendai 980-8577, Japan.

Physical Review Letters
|May 15, 2026
PubMed
Summary
This summary is machine-generated.

Pure ferroelectrics can host novel "multiferrons," quasiparticles with coupled electric and magnetic dipoles. This discovery offers a new path for multiferroic functionalities in simple ferroelectric materials.

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

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Last Updated: May 17, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

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Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Materials

Background:

  • Multiferroics, materials with coexisting electric and magnetic orders, are crucial for research and technology.
  • Room-temperature intrinsic multiferroics are rare due to the incompatibility between ferroelectricity and magnetism.

Purpose of the Study:

  • To predict the existence of multiferroic-like quasiparticles, termed "multiferrons," in pure ferroelectrics.
  • To explore the properties and potential applications of these multiferrons.

Main Methods:

  • Theoretical prediction of multiferrons arising from ferroelectric dynamics.
  • Analysis of electric dipole origin from parity-odd anharmonicity.
  • Investigation of magnetic moment origins from transverse polarization fluctuations.

Main Results:

  • Multiferrons possess simultaneous static electric and magnetic dipoles.
  • These quasiparticles exhibit a linear dc Stark response and tunable nonlinear THz second-harmonic generation.
  • A significant magnetoelectric cross-coupling is observed.

Conclusions:

  • Multiferrons offer a novel pathway to achieve multiferroic functionalities in simple ferroelectrics.
  • This finding opens new avenues for nonlinear THz optical applications.
  • The study challenges the perceived incompatibility between ferroelectricity and magnetism at the quasiparticle level.