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 Experiment Videos

Magnetite, a model system for mixed-valence oxides, does not show charge ordering.

Gloria Subías1, Joaquín García, Javier Blasco

  • 1Instituto de Ciencia de Materiales de Aragón, CSIC-Universidad de Zaragoza, Pza. San Francisco s/n 50009 Zaragoza, Spain.

Physical Review Letters
|November 5, 2004
PubMed
Summary

The Verwey transition in magnetite is not caused by charge ordering (CO). New x-ray scattering data show no evidence for CO, suggesting electron-phonon interactions drive this transition.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Fracture-driven weakening amplifies projected ice loss from West Antarctica.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Acute Effects of Transcutaneous Tibial Nerve Stimulation on Autonomic Nervous System Activity in Healthy Volunteers: An Exploratory Study.

Neurourology and urodynamics·2026
Same author

De-escalated adjuvant radiotherapy versus standard adjuvant treatment for human papillomavirus-associated oropharyngeal squamous cell carcinoma (MC1675): a phase 3, open-label, randomised controlled trial.

The Lancet. Oncology·2025
Same author

Identification of clinical and pathologic features associated with extranodal extension in patients with HPV-mediated oropharyngeal squamous cell carcinoma.

Oral oncology·2025
Same author

Symmetry, magnetic transitions and multiferroic properties of B-site-ordered A<sub>2</sub>MnB'O<sub>6</sub> perovskites (B' = [Co, Ni]).

Acta crystallographica Section B, Structural science, crystal engineering and materials·2024
Same author

Mechanism Behind the Enhanced Ferromagnetic Contributions Upon Ru Substitution in Ca<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> from X-Ray Absorption Spectroscopies.

ACS omega·2024

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid State Chemistry

Background:

  • Magnetite (Fe3O4) exhibits a metal-insulator transition at the Verwey transition temperature (Tv).
  • Charge ordering (CO) has been proposed as the mechanism driving this transition.
  • Understanding the Verwey transition is crucial for applications in electronics and spintronics.

Purpose of the Study:

  • To investigate the presence and nature of charge ordering (CO) in magnetite below the Verwey transition.
  • To determine the driving mechanism of the Verwey transition in magnetite.
  • To analyze superlattice reflections using advanced x-ray scattering techniques.

Main Methods:

  • X-ray resonant scattering was employed to study the low-temperature phase of magnetite.

Related Experiment Videos

  • Analysis of half-integer and mixed-integer superlattice reflections was performed.
  • The periodicity of potential charge ordering along the c-axis was specifically examined.

    • Main Results:

    • No superlattice reflections with features characteristic of charge ordering (CO) were observed.
    • The absence of CO was demonstrated along the c-axis with cubic lattice periodicity (q=(001)) and doubled periodicity (q=(001/2)).
    • Experimental data did not support an electronic ordering model for the Verwey transition.

    Conclusions:

    • The Verwey transition in magnetite is likely driven by strong electron-phonon interactions, not charge ordering.
    • The proposed electronic ordering model on octahedral Fe atoms is inconsistent with the experimental findings.
    • This research provides critical insights into the fundamental physics of magnetite.