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

Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

Tetrahedral 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,...
Imperfections in Crystal Structure: Non-Stoichiometric Defects01:29

Imperfections in Crystal Structure: Non-Stoichiometric Defects

Non-stoichiometric defects refer to a type of defect in the crystal structure of a compound where the ratio of its constituent elements deviates from the ideal stoichiometric ratio. There are two main types of non-stoichiometric defects: metal excess defects and metal deficiency defects.Metal excess defects occur when there is a slight surplus of metal ions than what is required by the stoichiometric ratio of the compound. For example, heating a sodium chloride crystal in sodium vapor results...
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...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

Crystal Field Theory
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...
Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

You might also read

Related Articles

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

Sort by
Same author

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh<sub>3</sub>Si<sub>7</sub>.

Physical review. X·2024
Same author

Avoided Quantum Tricritical Point and Emergence of a Canted Magnetic Phase in LaCr_{1-x}Fe_{x}Sb_{3}.

Physical review letters·2024
Same author

Elucidating Individual Magnetic Contributions in Bi-Magnetic Fe<sub>3</sub> O<sub>4</sub> /Mn<sub>3</sub> O<sub>4</sub> Core/Shell Nanoparticles by Polarized Powder Neutron Diffraction.

Small methods·2023
Same author

Non-magnetic ion site disorder effects on the quantum magnetism of a spin-1/2 equilateral triangular lattice antiferromagnet.

Journal of physics. Condensed matter : an Institute of Physics journal·2022
Same author

Field-induced vortex-like textures as a probe of the critical line in reentrant spin glasses.

Scientific reports·2021
Same author

Spin-valley locking and bulk quantum Hall effect in a noncentrosymmetric Dirac semimetal BaMnSb<sub>2</sub>.

Nature communications·2021
Same journal

Interplay of Anisotropy, Dzyaloshinskii Moriya Interaction and Symmetry breaking Fields in a 2D XY Ferromagnet.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Single-molecule electron transport near a charge-trapping orbital-level alignment.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Δ<sub>T</sub>Noise as a Robust Diagnostic for Chiral, Helical and Trivial Edge Modes.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

A Quantum Framework for Negative Magnetoresistance in Multi-Weyl Semimetals.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Magnetic anisotropy and electronic structure in surface-supported single rare-earth atom magnets: a topical review.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
Same journal

Modeling thermal transport in AlN/GaN superlattices and heterostructures with machine-learned force fields.

Journal of physics. Condensed matter : an Institute of Physics journal·2026
See all related articles

Related Experiment Video

Updated: May 30, 2026

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

Anisotropic exchange in frustrated pyrochlore Yb(2)Ti(2)O(7).

H B Cao1, A Gukasov, I Mirebeau

  • 1CEA, Centre de Saclay, Laboratoire Léon Brillouin, F-91191 Gif-sur-Yvette, France.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|August 13, 2011
PubMed
Summary
This summary is machine-generated.

Researchers reinterpreted powder susceptibility data for Yb(2)Ti(2)O(7), revealing that anisotropic magnetic properties prevent strict adherence to the Curie-Weiss law at low temperatures. This finding impacts understanding of magnetic interactions and the exotic ground state in this frustrated pyrochlore.

More Related Videos

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
08:00

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
11:17

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

Related Experiment Videos

Last Updated: May 30, 2026

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

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
08:00

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
11:17

Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals

Published on: February 9, 2017

Area of Science:

  • Condensed Matter Physics
  • Magnetism
  • Materials Science

Background:

  • The frustrated pyrochlore compound Ytterbium titanate (Yb(2)Ti(2)O(7)) exhibits complex magnetic behavior.
  • Understanding the magnetic interactions and ground state of such materials is crucial for developing new magnetic technologies.

Purpose of the Study:

  • To reinterpret powder susceptibility data for Yb(2)Ti(2)O(7) using a recently derived anisotropic exchange tensor.
  • To investigate the validity of the Curie-Weiss law for materials with anisotropic magnetic properties at low temperatures.
  • To discuss the implications for the paramagnetic Curie temperature and the exotic ground state of Yb(2)Ti(2)O(7).

Main Methods:

  • In-field polarized neutron scattering on a single crystal of Yb(2)Ti(2)O(7) to determine the local Yb(3+) magnetic susceptibility tensor.
  • Derivation of an anisotropic effective exchange tensor for the Yb(3+) ion.
  • Reinterpretation of powder susceptibility data using the derived anisotropic exchange tensor.

Main Results:

  • A highly anisotropic effective exchange tensor was determined for the Yb(3+) ion in Yb(2)Ti(2)O(7).
  • The study demonstrates that for a Kramers doublet with anisotropic g and exchange tensors, powder susceptibility does not strictly follow the Curie-Weiss law at low temperatures.
  • The reinterpretation challenges conventional understanding of the paramagnetic Curie temperature as a direct measure of interactions in such systems.

Conclusions:

  • The anisotropic nature of the Yb(3+) ion's magnetic properties in Yb(2)Ti(2)O(7) significantly influences its bulk magnetic response.
  • Deviations from the Curie-Weiss law in powder samples highlight the importance of considering anisotropy in magnetic materials.
  • This work provides new insights into the exotic 'slow fluctuation' ground state of Yb(2)Ti(2)O(7) and the interpretation of magnetic interaction parameters.