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Related Concept Videos

Range00:59

Range

14.3K
The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
14.3K
Phase Diagrams02:39

Phase Diagrams

50.3K
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...
50.3K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.7K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.7K
Phase Transitions02:31

Phase Transitions

23.2K
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...
23.2K
Electron Carriers01:24

Electron Carriers

91.9K
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons.
Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
91.9K
Electron Affinity03:07

Electron Affinity

43.4K
The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion).
43.4K

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Related Experiment Video

Updated: Feb 7, 2026

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
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Long range electronic phase separation in CaFe3O5.

Ka H Hong1, Angel M Arevalo-Lopez2, James Cumby1

  • 1Centre for Science at Extreme Conditions and School of Chemistry, University of Edinburgh, Mayfield Road, Edinburgh, EH9 3JZ, UK.

Nature Communications
|August 1, 2018
PubMed
Summary
This summary is machine-generated.

Paramagnetic CaFe3O5 spontaneously separates into two distinct electronic and spin ordered phases below 302 K. This discovery in complex oxides opens new avenues for controlling electronic phase separation in materials.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid-State Chemistry

Background:

  • Phase separation in manganite perovskites is linked to colossal magnetoresistance.
  • The possibility of spontaneous electronic phase separation, distinct from the high-temperature state, remains an open question.

Purpose of the Study:

  • To investigate spontaneous electronic phase separation in paramagnetic CaFe3O5.
  • To understand the nature of the coexisting electronic and spin ordered phases.

Main Methods:

  • Experimental investigation of CaFe3O5 below its magnetic transition temperature.
  • Analysis of electronic and spin ordering in the separated phases.

Main Results:

  • CaFe3O5 separates into two phases with distinct electronic and spin orders below 302 K.
  • One phase exhibits charge, orbital, and trimeron ordering, analogous to magnetite (Fe3O4).
  • The other phase shows averaged Fe2+/Fe3+ charges, with lattice symmetry remaining unchanged.

Conclusions:

  • Electronic phase separation can occur spontaneously in materials like CaFe3O5.
  • Differing lattice strains from electronic orders likely drive this separation.
  • Complex oxides with charge redistribution capabilities are promising for generating and controlling electronic phase-separated nanostructures.