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...
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.
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
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.
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...

You might also read

Related Articles

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

Sort by
Same author

Mpox Vaccine Hesitancy Among Sexually Active People with HIV in Care at Risk for mpox.

AIDS and behavior·2026
Same author

Racial Inequity in Prescription of Semaglutide Among Eligible People With HIV.

Diabetes care·2025
Same author

Shock measurements of alternative tamper materials YAG and GGG.

Optics letters·2025
Same author

Flooded with potential: urban drainage science as seen by early-career researchers.

Water science and technology : a journal of the International Association on Water Pollution Research·2025
Same author

A COVID-19 monitoring process for healthcare workers utilizing occupational health.

Occupational medicine (Oxford, England)·2023
Same author

Adult life-course trajectories of psychological distress and economic outcomes in midlife during the COVID-19 pandemic: evidence from the 1958 and 1970 British birth cohorts.

Social psychiatry and psychiatric epidemiology·2023

Related Experiment Video

Updated: Jul 18, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

Tunable dipolar magnetism in high-spin molecular clusters.

M Evangelisti1, A Candini, A Ghirri

  • 1National Research Center on nanoStructures and bioSystems at Surfaces (S3), INFM-CNR, Modena, Italy. evange@unimore.it

Physical Review Letters
|December 13, 2006
PubMed
Summary

We report on Fe17 high-spin molecular clusters, demonstrating nanostructured dipolar magnetism. These molecules exhibit tunable magnetic behaviors, from superparamagnetism to magnetic order, driven by dipolar interactions and anisotropy.

More Related Videos

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

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

Related Experiment Videos

Last Updated: Jul 18, 2026

Spatial Separation of Molecular Conformers and Clusters
10:37

Spatial Separation of Molecular Conformers and Clusters

Published on: January 9, 2014

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

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

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • High-spin molecular clusters are key to understanding nanoscale magnetism.
  • Dipolar interactions play a crucial role in determining magnetic ordering.
  • Controlling magnetic properties at the molecular level is a significant challenge.

Purpose of the Study:

  • To investigate the magnetic properties of the Fe17 high-spin molecular cluster.
  • To demonstrate Fe17 as a model system for nanostructured dipolar magnetism.
  • To explore how chemical arrangement influences macroscopic magnetic behavior.

Main Methods:

  • Synthesis and characterization of Fe17 molecular clusters.
  • Experimental investigation of magnetic properties at low temperatures.
  • Theoretical analysis of spin correlations and magnetic interactions.

Main Results:

  • Fe17 clusters exhibit a high spin ground state (S=35/2) and weak axial anisotropy.
  • Molecular spins are correlated solely by dipolar interactions.
  • Different crystal packing arrangements lead to diverse magnetic behaviors, including superparamagnetism and long-range magnetic order below 1 K.

Conclusions:

  • Fe17 molecular clusters exemplify nanostructured dipolar magnetism.
  • The interplay between dipolar energy and anisotropy dictates macroscopic magnetic properties.
  • Precise chemical arrangement of magnetic units offers a route to engineer novel magnetic materials.