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Related Concept Videos

Phase Diagrams02:39

Phase Diagrams

A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
Phase Diagram01:19

Phase Diagram

The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
Phase Diagram01:24

Phase Diagram

A phase diagram is a graphical representation of the physical states of a substance under different conditions of temperature and pressure. It shows the boundaries between solid, liquid, and gas phases and the conditions at which these phases coexist in equilibrium. An area in a phase diagram represents a single phase, whereas lines or phase boundaries represent the equilibrium between two phases.In the phase diagram of water, the boundary line between the solid and liquid states illustrates...
Phase Transitions02:31

Phase Transitions

Whether solid, liquid, or gas, a substance's state depends on the order and arrangement of its particles (atoms, molecules, or ions). Particles in the solid pack closely together, generally in a pattern. The particles vibrate about their fixed positions but do not move or squeeze past their neighbors. In liquids, although the particles are closely spaced, they are randomly arranged. The position of the particles are not fixed—that is, they are free to move past their neighbors to occupy...
Phase Transitions01:21

Phase Transitions

A phase transition is the process in which a substance changes from one state of matter to another, like from a solid to a liquid, liquid to gas, or vice versa, at a specific temperature and under given pressure conditions. This change is spontaneous and is affected by alterations in temperature and pressure. These parameters impact the strength of the forces between molecules (intermolecular forces) in the substance.During a phase transition, both the initial and final phases of the substance...
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...

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Related Experiment Video

Updated: Jun 28, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
12:37

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

A map for phase-change materials.

Dominic Lencer1, Martin Salinga, Blazej Grabowski

  • 1RWTH Aachen University, I. Physikalisches Institut (IA), 52056 Aachen, Germany.

Nature Materials
|November 18, 2008
PubMed
Summary
This summary is machine-generated.

This study introduces a new "treasure map" for phase-change materials, crucial for data storage. It uses bonding characteristics to predict material properties based on composition, aiding in the discovery of new materials.

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Last Updated: Jun 28, 2026

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers
12:37

Phase Diagram Characterization Using Magnetic Beads as Liquid Carriers

Published on: September 4, 2015

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

Published on: May 15, 2017

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Area of Science:

  • Materials Science
  • Solid-State Chemistry
  • Data Storage Technology

Background:

  • Phase-change materials possess unique properties ideal for data storage.
  • Understanding their fundamental bonding characteristics is key to optimizing their performance.

Purpose of the Study:

  • To present a predictive framework, or
  • treasure map
  • , for phase-change materials based on bonding.
  • To enable prediction of physical property trends by altering material composition.

Main Methods:

  • Developed a coordinate system based on the composition of phase-change materials.
  • Quantified bonding characteristics using ionicity and hybridization (covalency) as coordinates.
  • Correlated these coordinates with material properties.

Main Results:

  • A novel "treasure map" for phase-change materials has been established.
  • The map utilizes ionicity and covalency as predictive coordinates.
  • A small magnitude of both ionicity and covalency is characteristic of effective phase-change materials.

Conclusions:

  • The presented coordinate scheme effectively predicts trends in physical properties.
  • This fundamental understanding facilitates the rational design of new phase-change materials for data storage.
  • The "treasure map" offers a novel approach to material discovery.