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

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.
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...
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.
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...
Paramagnetism01:30

Paramagnetism

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...
Magnetism01:30

Magnetism

Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...

You might also read

Related Articles

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

Sort by
Same author

The role of 3d electrons in the appearance of ferromagnetism in the antiferromagnetic Ru2MnGe Heusler compound: a magnetic Compton scattering study.

Journal of physics. Condensed matter : an Institute of Physics journal·2012
Same author

Magnetic ground states of CaRu(1-x)Mn(x)O(3)(0.2 ≤ x ≤ 0.9): a magnetic Compton scattering study.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Variation of the Ru moment in the Ca(0.3)Sr(0.7)Ru(1-x)Mn(x)O3 system.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

In vivo gene transfer of endothelial nitric oxide synthase to carotid arteries from hypercholesterolemic rabbits enhances endothelium-dependent relaxations.

Stroke·2001
Same author

Activation of intestinal mucosal immunity in tumor-bearing mice by lactoferrin.

Japanese journal of cancer research : Gann·2000
Same author

Starvation increases the amount of pyruvate dehydrogenase kinase in several mammalian tissues.

Archives of biochemistry and biophysics·2000

Related Experiment Video

Updated: May 31, 2026

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

Ferromagnetism in CaMn(1-x)Ir(x)O(3).

S Mizusaki1, J Sato, T Taniguchi

  • 1College of Science and Engineering, Aoyama Gakuin University, Fuchinobe, Sagamihara, Kanagawa 157-8572, Japan.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|June 23, 2011
PubMed
Summary

This study on CaMn(1-x)Ir(x)O(3) reveals a transition from antiferromagnetism to ferromagnetism with increasing iridium content. Mixed valence states of manganese and iridium ions explain the observed magnetic properties.

More Related Videos

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

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

Related Experiment Videos

Last Updated: May 31, 2026

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

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

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

Area of Science:

  • Materials Science
  • Solid State Physics
  • Magnetism

Background:

  • Perovskite manganites exhibit complex magnetic and electric properties.
  • Tuning properties via doping is crucial for materials development.

Purpose of the Study:

  • Investigate the crystallographic, magnetic, and electric properties of CaMn(1-x)Ir(x)O(3) for 0≤x≤0.6.
  • Understand the influence of iridium doping on the magnetic phase transitions and properties.

Main Methods:

  • Synthesis and characterization of CaMn(1-x)Ir(x)O(3) samples.
  • Crystallographic analysis using lattice constants.
  • Magnetic property measurements including Néel temperature (T(N)), Curie temperature (T(C)), and effective moment (μ(eff)).

Main Results:

  • Lattice constants increase with increasing iridium content.
  • Antiferromagnetic behavior observed for 0.05≤x≤0.2, transitioning to ferromagnetism for 0.3≤x≤0.6.
  • Néel temperature decreases, while Curie temperature increases with iridium content.
  • Effective moment and Weiss temperature show composition dependence, explained by mixed valence states of Mn and Ir ions.
  • Evidence suggests coexistence of antiferromagnetic and ferromagnetic phases.

Conclusions:

  • Iridium doping induces a magnetic phase transition in CaMn(1-x)Ir(x)O(3).
  • The observed properties are attributed to mixed valence states of Mn and Ir ions.
  • Ferromagnetism emerges when the ferromagnetic phase fraction dominates the antiferromagnetic phase.