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

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...
Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis. This...
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
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.
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.
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...

You might also read

Related Articles

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

Sort by
Same author

[The serotype of rotavirus].

Uirusu·1992
Same author

[A case of exceedingly low serum leucine aminopeptidase--evaluation of the enzymological significance].

Nihon Shokakibyo Gakkai zasshi = The Japanese journal of gastro-enterology·1992
Same author

Serial changes in myocardial beta-adrenergic receptor after experimental brain death in dogs.

The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation·1992
Same author

[Pulsed Doppler echocardiographic observation of left ventricular filling dynamics after aortic valve replacement in patients with chronic aortic regurgitation].

Kyobu geka. The Japanese journal of thoracic surgery·1992
Same author

Global left ventricular performance and regional systolic function after suture annuloplasty for chronic mitral regurgitation.

Circulation·1992
Same author

[Coagulation changes during liver resection].

Masui. The Japanese journal of anesthesiology·1992

Related Experiment Video

Updated: Jul 15, 2026

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Published on: April 12, 2019

Orbital ordering and magnetic field effect in MnV2O4.

T Suzuki1, M Katsumura, K Taniguchi

  • 1Department of Physics, Waseda University, Tokyo 169-8555, Japan.

Physical Review Letters
|May 16, 2007
PubMed
Summary

We investigated MnV2O4, finding a structural phase transition linked to orbital ordering. This transition, occurring at 57 K, also involves ferrimagnetic ordering and is influenced by magnetic fields.

More Related Videos

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

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 15, 2026

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates
06:49

Radio Frequency Magnetron Sputtering of GdBa2Cu3O7−δ/ La0.67Sr0.33MnO3 Quasi-bilayer Films on SrTiO3 (STO) Single-crystal Substrates

Published on: April 12, 2019

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
08:25

Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene

Published on: July 3, 2015

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:

  • Condensed Matter Physics
  • Materials Science
  • Crystallography

Background:

  • Spinel oxides exhibit complex interplay between orbital, spin, and lattice degrees of freedom.
  • Understanding these couplings is crucial for designing materials with novel electronic and magnetic properties.

Purpose of the Study:

  • To elucidate the structural properties and phase transitions in the orbital-spin-coupled spinel oxide MnV2O4.
  • To investigate the relationship between structural changes, magnetic ordering, and orbital behavior.

Main Methods:

  • Single-crystal X-ray diffraction was employed to precisely determine structural characteristics.
  • Magnetic susceptibility measurements were performed to identify magnetic ordering temperatures.

Main Results:

  • A structural phase transition from cubic to tetragonal symmetry was observed at 57 K.
  • Ferrimagnetic ordering was found to occur simultaneously with the structural transition (Ts,TN=57 K).
  • The structural transition is driven by antiferro-type ordering of Vanadium (V) t2g orbitals.
  • Magnetic fields were shown to induce the structural transition above Ts and align tetragonal domains below Ts, leading to significant magnetostriction.

Conclusions:

  • The study confirms that the structural phase transition in MnV2O4 is intimately linked to the ordering of V t2g orbitals.
  • The simultaneous occurrence of structural and magnetic transitions highlights strong magneto-structural coupling.
  • The material exhibits significant magnetostriction, suggesting potential applications in magnetic field-responsive devices.