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

2.4K
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...
2.4K
Valence Bond Theory02:42

Valence Bond Theory

8.5K
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...
8.5K
Diamagnetism01:26

Diamagnetism

2.4K
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....
2.4K
Colors and Magnetism03:02

Colors and Magnetism

11.6K
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...
11.6K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

26.2K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
26.2K
Paramagnetism01:30

Paramagnetism

2.5K
Paramagnets are materials with unpaired electrons that possess a finite magnetic moment. In the absence of a magnetic field, these moments are randomly oriented, and thus the net moment is zero. Under an external field, a torque acting on the moments tends to align them along the field's direction. However, the random thermal motion of electrons produces a torque opposite to the external field and tries to disorient the moments. These two competing effects align only a few moments along the...
2.5K

You might also read

Related Articles

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

Sort by
Same author

Putative muscle stem cells promote <i>Xenopus</i> tail regeneration by modifying macrophage function via <i>c1qtnf3</i>.

Proceedings of the National Academy of Sciences of the United States of America·2025
Same author

Modeling-Making-Modulating High-Entropy Alloy with Activated Water-Dissociation Centers for Superior Electrocatalysis.

Journal of the American Chemical Society·2025
Same author

Noncollinear Magnetism in Fe<sub>3</sub>O<sub>4</sub> Induced via Site-Selective Rare-Earth Substitution Boosting Its Saturation Magnetization.

Small (Weinheim an der Bergstrasse, Germany)·2025
Same author

Colossal Magnetoresistive Switching Induced by d<sup>0</sup> Ferromagnetism of MgO in a Semiconductor Nanochannel Device with Ferromagnetic Fe/MgO Electrodes.

Advanced materials (Deerfield Beach, Fla.)·2024
Same author

Evidence-based recommender system for high-entropy alloys.

Nature computational science·2024
Same author

Insight into Scattering Mechanisms and Transport Properties of AgCuS for Flexible Thermoelectric Applications.

ACS applied materials & interfaces·2023

Related Experiment Video

Updated: Jun 11, 2025

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

Published on: March 24, 2019

8.1K

Optimizing the composition of (Ce,La)(Co,Fe)5for permanent magnet applications using density functional theory.

Haruki Okumura1, Tetsuya Fukushima1, Taro Fukazawa1

  • 1CD-FMat, National Institute of Advanced Industrial Science and Technology Tsukuba, 1-1-1 Umezono, Tsukuba, Ibaraki, Tsukuba, 305-8560, JAPAN.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|September 27, 2024
PubMed
Summary

We identified CeCo4.7Fe0.3 as an optimal composition for high-performance permanent magnets. This material exhibits enhanced magnetic anisotropy and a higher Curie temperature compared to CeCo5, improving high-temperature magnetic properties.

Keywords:
Curie temperatureFirst-principle calculationKKR Green’s function methodPermanent magnetmagnetocrystalline anisotropy

More Related Videos

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Published on: April 12, 2019

7.6K
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

4.2K

Related Experiment Videos

Last Updated: Jun 11, 2025

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

Published on: March 24, 2019

8.1K
Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7âˆ'ÃŽ ´/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 STO Single-crystal Substrates

Published on: April 12, 2019

7.6K
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

4.2K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Computational Materials Science

Background:

  • Disordered (Ce,La)(Co,Fe)5 systems are candidates for permanent magnets.
  • Understanding the impact of La and Fe doping on magnetic properties is crucial.

Purpose of the Study:

  • To calculate key physical quantities for disordered (Ce,La)(Co,Fe)5 systems.
  • To identify an optimal composition for high-performance permanent magnets.

Main Methods:

  • Full-potential Korringa-Kohn-Rostoker Green's function method.
  • Coherent potential approximation for compositional disorder.
  • Mean-field approximation for Curie temperature estimation.

Main Results:

  • CeCo4.7Fe0.3 exhibits the highest magnetic anisotropy (Ku = 15.14 MJ/m³).
  • La doping reduces Ku at 0 K but increases Curie temperature (TC).
  • CeCo4.7Fe0.3 has an estimated TC of 1005 K, exceeding CeCo5 (965 K).
  • CeCo4.7Fe0.3 is stable against decomposition despite Fe doping.

Conclusions:

  • CeCo4.7Fe0.3 is a promising composition for high-performance permanent magnets.
  • The study provides valuable data for the exploration of new magnetic materials.