Related Experiment Video
Updated: Aug 4, 2026
Chemical Vapor Deposition of an Organic Magnet, Vanadium Tetracyanoethylene
Published on: July 3, 2015
Magnetic ordering in iron tricyanomethanide
Ralf Feyerherm1, Anja Loose, Sven Landsgesell
1Hahn-Meitner-Institute and Berlin Neutron Scattering Center, Department SF2, Glienicker Strasse 100, 14109 Berlin, Germany. feyerherm@hmi.de
Iron bis(tricyanomethanide) exhibits two magnetic phase transitions, with ordering changing from incommensurate to commensurate and back under magnetic fields. This behavior is linked to its 2D triangular lattice structure.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- Fe[C(CN)3]2 is a material with potential magnetic properties due to its iron content.
- Understanding magnetic ordering in low-dimensional systems is crucial for developing new magnetic materials.
Purpose of the Study:
- To investigate the magnetic phase transitions and ordering in Fe[C(CN)3]2.
- To elucidate the role of lattice structure and external magnetic fields on magnetic behavior.
Main Methods:
- Magnetic susceptibility measurements.
- Heat capacity studies.
- Neutron diffraction analysis.
Main Results:
- Two magnetic phase transitions were identified at T(N,I) = 2.45 K and T(N,II) = 1.85 K.
- An incommensurate magnetic ordering with a temperature-dependent propagation vector exists between 1.85 K and 2.45 K.
- Below 1.85 K, a commensurate phase with a doubled unit cell and ordered moments aligned with the Fe coordination octahedron is observed; this phase transitions to an incommensurate phase under magnetic fields up to 40 kOe.
Conclusions:
- The magnetic ordering in Fe[C(CN)3]2 is influenced by its 2D triangular lattice topology, leading to partial frustration.
- The observed magnetic transitions and field-dependent behavior are characteristic of frustrated magnetic systems.
More Related Videos
09:06Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
06:53Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
Related Concept Videos
02:42Valence Bond Theory
02:58Crystal Field Theory - Octahedral Complexes
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
03:02Colors and Magnetism
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.
01:31Ferromagnetism
01:30Paramagnetism