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

Metallic Solids02:37

Metallic Solids

19.5K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
19.5K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

28.4K
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...
28.4K
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

25.1K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
25.1K
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

10.3K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
10.3K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

45.3K
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,...
45.3K
Ladder Diagrams: Complexation Equilibria01:07

Ladder Diagrams: Complexation Equilibria

448
Ladder diagrams are useful for evaluating equilibria involving metal-ligand complexes. The vertical scale of the ladder diagram represents the concentration of unreacted or free ligand, pL. The horizontal lines on the scale depict the log of stepwise formation constants for metal-ligand complexes and indicate the dominant species in all the regions.
The formation constant, K1, for the formation of Cd(NH3)2+ complex from cadmium and ammonia is 3.55 × 102. Log K1 (i.e. pNH3) is 2.55, and...
448

You might also read

Related Articles

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

Sort by
Same author

Development of a magnetic interatomic potential for cubic antiferromagnets: The case of NiO.

The Journal of chemical physics·2026
Same author

Elucidation of the structural and magnetic properties of the anion-radical salt (Et-3,5-diMe-Pz)(TCNQ)<sub>2</sub>.

Physical chemistry chemical physics : PCCP·2026
Same author

Corrigendum to "Effect of the ratio of water to rice on the molecular dynamics of cooked rice starch during retrogradation: Implications for amorphous structure in gelatinized state" [Int. J. Biol. Macromol., 306 (2025) 141668].

International journal of biological macromolecules·2026
Same author

WBCAtt+: Fine-grained pixel-level morphological annotations for white blood cell images.

Medical image analysis·2026
Same author

In-Plane Electronic Metal-Support Interaction Enables Efficient Sulfur Catalysis on Ni Single-Atom Catalysts.

Journal of the American Chemical Society·2026
Same author

Emergence of a Fluctuating Ground State in Y-Kapellasite under Pressure.

Physical review letters·2026

Related Experiment Video

Updated: Oct 15, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.9K

Lattice dynamics in CePd2Al2 and LaPd2Al2.

Petr Doležal1, Petr Cejpek2, Satoshi Tsutsui3,4

  • 1Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 121 16, Prague 2, Czech Republic. Petr.Dolezal@karlov.mff.cuni.cz.

Scientific Reports
|October 23, 2021
PubMed
Summary

Lattice dynamics in CePd2Al2 are crucial for understanding quantum states formed by phonon-electron interactions. This study maps phonon dispersion curves, revealing insights into magneto-elastic coupling.

More Related Videos

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.0K
Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.9K

Related Experiment Videos

Last Updated: Oct 15, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

8.9K
Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
11:14

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope

Published on: May 28, 2016

14.0K
Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

7.9K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • Phonon-electron interactions can form novel quantum states beyond the Born-Oppenheimer approximation.
  • Cerium palladium aluminum (CePd2Al2) is a key material exhibiting prominent phonon-4f electron interactions.
  • Experimental evidence for such interactions is scarce, highlighting the significance of studying materials like CePd2Al2.

Purpose of the Study:

  • To investigate phonon dispersion curves in (Ce,La)Pd2Al2 across various temperatures (1.5, 7.5, 80, and 300 K).
  • To analyze phonon mode symmetries and their behavior in relation to magneto-elastic interactions.
  • To compare experimental findings with theoretical calculations and other cerium compounds.

Main Methods:

  • Inelastic X-ray scattering (IXS) was employed to map phonon modes.
  • Measurements were conducted at specific crystallographic points (X, Z) and directions (Λ, Δ).
  • Phonon dispersion curves were reconstructed by measurements across multiple Brillouin zones.

Main Results:

  • Experimental phonon dispersion curves were obtained and compared with theoretical calculations, showing good agreement.
  • The study identified the A1g phonon mode symmetry as unaffected by the electron-phonon interaction.
  • Results provide insights into magneto-elastic coupling in CePd2Al2.

Conclusions:

  • The study confirms the significant role of lattice dynamics in CePd2Al2 for understanding electron-phonon interactions.
  • The observed behavior of the A1g phonon mode contrasts with prior assumptions, necessitating revised theoretical models.
  • Findings contribute to the broader understanding of quantum phenomena in intermetallic compounds.