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Related Concept Videos

Types Of Superconductors01:28

Types Of Superconductors

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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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Metallic Solids

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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.
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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Updated: May 7, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
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Superconductivity in ordered Li-Al-B compounds.

K Hussain1, S J Donaldson1, E Karaca1,2,3

  • 1School of Physics, Engineering and Technology, University of York, York, YO10 5DD, UK.

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|January 2, 2025
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Summary
This summary is machine-generated.

New [Formula: see text] materials exhibit strong electron-phonon coupling and high superconducting critical temperatures, surpassing conventional [Formula: see text] at ambient pressure. These stable compounds show promise for practical superconducting applications.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Computational Chemistry

Background:

  • Conventional superconductors like [Formula: see text] have limitations for widespread application.
  • Discovering new superconducting materials with higher critical temperatures is a key research goal.

Purpose of the Study:

  • To investigate the superconducting properties of [Formula: see text] materials using computational methods.
  • To identify promising candidates for high-temperature superconductivity.

Main Methods:

  • First principles calculations were employed to model material properties.
  • Electron-phonon coupling strengths and superconducting critical temperatures were computed.

Main Results:

  • [Formula: see text] materials demonstrate strong electron-phonon coupling.
  • Several compounds exhibit superconducting critical temperatures exceeding that of [Formula: see text] at ambient pressure.
  • [Formula: see text] was identified as the most stable member, with a critical temperature of [Formula: see text].
  • The peak critical temperature was observed in [Formula: see text], reaching [Formula: see text].

Conclusions:

  • The studied [Formula: see text] materials are thermodynamically and dynamically stable.
  • Strong electron-phonon coupling suggests significant potential for practical superconducting applications.
  • These findings open new avenues for designing advanced superconducting materials.