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

High-frequency EPR spectra of

Barra1, Gatteschi, Sessoli

  • 1High Magnetic Field Laboratory, CNRS, Grenoble, France.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 6, 2000
PubMed
Summary
This summary is machine-generated.

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

Bellessa et al. reply:

Physical review letters·2000
Same author

Observation of quantum coherence in mesoscopic molecular magnets

Physical review letters·2000
Same author

Nonlinear Schrodinger flow in a periodic potential

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics·2000
Same author

Integer-Spin Multifrequency EPR Spectroscopy of a Ferromagnetically Coupled, Oxo-Bridged Mn(IV)Mn(IV) Model Complex We thank Dr. S. Gambarelli for the Q-band EPR spectrum.

Angewandte Chemie (International ed. in English)·2000
Same author

Effects of nuclear spins on the quantum relaxation of the magnetization for the molecular nanomagnet Fe8

Physical review letters·2000
Same author

Measurement of the relaxation rate of the magnetization in Mn12O12-acetate using proton NMR echo

Physical review letters·2000

This study used high-frequency EPR spectroscopy to investigate the [Fe8O2(OH)12(tacn)6]Br8 x 9H2O single-molecule magnet. Results indicate that single-ion anisotropy is the primary driver of magnetic anisotropy in this complex.

Area of Science:

  • Molecular Magnetism
  • Electron Paramagnetic Resonance (EPR) Spectroscopy
  • Quantum Magnetism

Background:

  • Single-molecule magnets (SMMs) are promising for high-density data storage and quantum computing.
  • Understanding magnetic anisotropy is crucial for SMM performance.
  • The [Fe8O2(OH)12(tacn)6]Br8 x 9H2O complex is a well-studied Fe8 SMM.

Purpose of the Study:

  • To precisely determine the magnetic anisotropy parameters of the [Fe8O2(OH)12(tacn)6]Br8 x 9H2O single-molecule magnet.
  • To elucidate the contributions of single-ion anisotropy versus intra-cluster dipolar interactions to the overall magnetic anisotropy.
  • To investigate the influence of transverse magnetic anisotropy on the magnetization reversal barrier.

Main Methods:

  • Multifrequency (95-285 GHz) high-field Electron Paramagnetic Resonance (EPR) spectroscopy.

Related Experiment Videos

  • Analysis of polycrystalline powder EPR spectra to estimate zero-field splitting parameters up to fourth order.
  • Analysis of single-crystal EPR spectra to determine the principal directions of magnetic anisotropy.

    • Main Results:

    • Zero-field splitting parameters up to fourth order were estimated from powder spectra.
    • Principal directions of magnetic anisotropy for the cluster were identified using single-crystal spectra.
    • Comparison with intra-cluster dipolar contributions suggests single-ion anisotropy is the dominant factor in magnetic anisotropy.
    • The role of transverse magnetic anisotropy in the magnetization reversal barrier was discussed.

    Conclusions:

    • Single-ion anisotropy plays a more significant role than intra-cluster dipolar interactions in the magnetic anisotropy of this Fe8 SMM.
    • The findings provide crucial insights into the magnetic properties of [Fe8O2(OH)12(tacn)6]Br8 x 9H2O.
    • Further understanding of anisotropy contributions can guide the design of improved single-molecule magnets.