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

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Elastic Strain Energy for Normal Stresses01:22

Elastic Strain Energy for Normal Stresses

Strain energy quantifies the energy stored within a material due to deformation under loading conditions, a fundamental concept in materials science and engineering. The strain energy can be modeled when a material is subjected to axial loading with uniformly distributed stress. In this scenario, the stress experienced by the material is the internal force divided by the cross-sectional area, and the strain induced is directly proportional to this stress through the modulus of elasticity.
If...
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...
Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

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:
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity01:15

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...

You might also read

Related Articles

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

Sort by
Same author

Perovskite phase formation in pure and Sm- and La-substituted BiFeO<sub>3</sub> thin films in isothermal and non-isothermal regimes.

Physical chemistry chemical physics : PCCP·2025
Same author

Structural phase transition and dynamical properties of PbTiO<sub>3</sub> simulated by molecular dynamics.

Journal of physics. Condensed matter : an Institute of Physics journal·2020
Same author

Charge carriers and small-polaron migration as the origin of intrinsic dielectric anomalies in multiferroic TbMnO3 polycrystals.

Journal of physics. Condensed matter : an Institute of Physics journal·2013
Same author

An effective interaction potential for gallium phosphide.

Journal of physics. Condensed matter : an Institute of Physics journal·2011
Same author

Design and acoustic characterization of limited diffraction ultrasonic devices.

The Journal of the Acoustical Society of America·2010
Same author

X-ray powder diffraction structural characterization of Pb1-xBaxZr0.65Ti0.35O3 ceramic.

Acta crystallographica. Section B, Structural science·2007

Related Experiment Video

Updated: May 17, 2026

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
07:44

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Published on: April 27, 2016

Low-temperature elastic anomalies in CaTiO3: dynamical characterization.

R Placeres-Jiménez1, L G V Gonçalves, J P Rino

  • 1Grupo de Simulação Computacional, Departamento de Física, Universidade Federal de São Carlos, São Carlos-SP, Brazil. rplaceres@df.ufscar.br

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|October 24, 2012
PubMed
Summary
This summary is machine-generated.

Calcium titanate (CaTiO3) exhibits unusual elastic properties near 200 K. Molecular dynamics simulations reveal anomalous hardening in poly-domain configurations, possibly due to domain wall dynamics, not structural changes.

More Related Videos

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Related Experiment Videos

Last Updated: May 17, 2026

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
07:44

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Published on: April 27, 2016

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Computational Materials Science

Background:

  • Pulse-echo ultrasonic measurements reveal anomalous elastic behavior in Calcium Titanate (CaTiO3) around 200 K.
  • A significant rise in the attenuation coefficient suggests underlying dynamic processes.

Purpose of the Study:

  • To investigate the anomalous elastic behavior of CaTiO3 using molecular dynamics simulations.
  • To compare the elastic response of mono-domain (MDm) and poly-domain (PDm) configurations.
  • To explore the underlying mechanisms, such as structural transitions or domain dynamics.

Main Methods:

  • Molecular dynamics simulations employing the Vashishta-Raman interatomic potential.
  • Simulation of elastic behavior across a temperature range of 300 K to 20 K.
  • Analysis of pressure fluctuations and time-series data using time-delay reconstruction techniques.

Main Results:

  • Mono-domain CaTiO3 shows a linear temperature dependence of bulk modulus.
  • Poly-domain CaTiO3 exhibits anomalous hardening around 210 K with fluctuating bulk modulus.
  • No structural phase transition was detected; dynamical instability associated with domain walls is proposed.
  • Pressure fluctuations in both configurations follow a power law distribution.

Conclusions:

  • The anomalous elastic behavior in poly-domain CaTiO3 is attributed to domain wall dynamics rather than a structural phase transition.
  • Low-dimension dynamics were observed in the polycrystalline configuration, diminishing at higher temperatures.
  • The study provides insights into the complex mechanical response of poly-domain materials.