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

Thermal Expansion01:22

Thermal Expansion

5.4K
The expansion of alcohol in a thermometer is one of many commonly encountered examples of thermal expansion, which is the change in size or volume of a given system as its temperature changes. The most visible example is the expansion of hot air. When air is heated, it expands and becomes less dense than the surrounding air, which then exerts an upward force on the hot air to, for example, make steam and smoke rise, and hot air balloons float. The same behavior happens in all liquids and gases,...
5.4K
Thermal Strain01:19

Thermal Strain

2.7K
Thermal strain is a concept that arises when we consider how temperature changes affect structures. Unlike the conventional assumption that structures remain constant under load, real-world scenarios often involve temperature fluctuations that can significantly impact these structures. Consider a homogeneous rod with a uniform cross-section resting freely on a flat horizontal surface. If the rod's temperature increases, the rod elongates. This elongation is proportional to the temperature...
2.7K
Thermal expansion and Thermal stress: Problem Solving01:27

Thermal expansion and Thermal stress: Problem Solving

2.0K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.0K
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

322
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...
322
Expansion and Contraction in Masonry Walls01:19

Expansion and Contraction in Masonry Walls

1.2K
Masonry walls are subject to slight expansion and contraction due to variations in temperature and moisture. Thermal movement in masonry is relatively straightforward to measure and plan for. On the other hand, moisture movement poses more of a challenge. New clay masonry units typically absorb water and expand over time under normal environmental conditions. Conversely, new concrete masonry units tend to shrink as they lose the excess moisture acquired during their production process.
To...
1.2K
Heat and Free Expansion01:24

Heat and Free Expansion

2.7K
The work done by a thermodynamic system depends not only on the initial and final states but also on the intermediate states—that is, on the path. Like work, when heat is added to a thermodynamic system, it undergoes a change of state, and the state attained depends on the path from the initial state to the final state. Consider an ideal gas cylinder fitted with a piston. When the cylinder is heated at a constant temperature, the gas molecules absorb energy and expand slowly in a...
2.7K

You might also read

Related Articles

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

Sort by
Same author

Field-Induced Magnon Decay, Magnon Shadows, and Rotonlike Excitations in the Honeycomb Antiferromagnet YbBr_{3}.

Physical review letters·2025
Same author

Microscopic Origin of Reduced Magnetic Order in a Frustrated Metal.

Physical review letters·2025
Same author

Absence of Altermagnetic Magnon Band Splitting in MnF_{2}.

Physical review letters·2025
Same author

Complete field-induced spectral response of the spin-1/2 triangular-lattice antiferromagnet CsYbSe<sub>2</sub>.

npj quantum materials·2024
Same author

Fate of charge order in overdoped La-based cuprates.

npj quantum materials·2024
Same author

A microscopic Kondo lattice model for the heavy fermion antiferromagnet CeIn<sub>3</sub>.

Nature communications·2023

Related Experiment Video

Updated: Dec 24, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.5K

Kondo-Induced Giant Isotropic Negative Thermal Expansion.

D G Mazzone1,2, M Dzero3, Am M Abeykoon1

  • 1National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA.

Physical Review Letters
|April 14, 2020
PubMed
Summary
This summary is machine-generated.

Researchers discovered a new way to control negative thermal expansion in Y-doped SmS. This unusual property, driven by a Kondo lattice state, shows potential for advanced material applications.

More Related Videos

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

8.0K
Trapping of Micro Particles in Nanoplasmonic Optical Lattice
07:20

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

6.9K

Related Experiment Videos

Last Updated: Dec 24, 2025

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.5K
High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings
09:01

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

8.0K
Trapping of Micro Particles in Nanoplasmonic Optical Lattice
07:20

Trapping of Micro Particles in Nanoplasmonic Optical Lattice

Published on: September 5, 2017

6.9K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid State Chemistry

Background:

  • Negative thermal expansion (NTE) is a rare phenomenon with significant technological potential.
  • Understanding the mechanisms behind NTE is crucial for material design and application.
  • Samarium sulfide (SmS) exhibits intriguing electronic and volume phase transitions.

Purpose of the Study:

  • To investigate the 4f-electronic properties of Y-doped SmS using advanced spectroscopic and diffraction techniques.
  • To elucidate the relationship between electronic structure and negative thermal expansion in this material.
  • To explore the influence of Yttrium (Y) doping and chemical disorder on NTE properties.

Main Methods:

  • X-ray spectroscopy and diffraction were employed to probe the electronic and structural characteristics.
  • The Kondo volume collapse model was utilized for theoretical interpretation of experimental results.
  • Systematic variation of Yttrium concentration allowed for tuning of material properties.

Main Results:

  • An unprecedented decrease in bulk Samarium (Sm) valence exceeding 20% was observed at low temperatures.
  • A strong coupling between an emergent Kondo lattice state and significant isotropic volume change was identified as the cause.
  • The magnitude and temperature range of NTE were found to be tunable based on Y concentration and chemical disorder.

Conclusions:

  • Y-doped SmS exhibits tunable, giant, and isotropic negative thermal expansion.
  • The findings highlight the role of the Kondo lattice state in driving NTE.
  • This research opens new pathways for designing advanced materials with controlled NTE for diverse applications.