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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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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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Molecule-based magnetic coolers.

Yan-Zhen Zheng1, Guo-Jun Zhou, Zhiping Zheng

  • 1Centre for Applied Chemical Research, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710054, China. zheng.yanzhen@mail.xjtu.edu.cn.

Chemical Society Reviews
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Summary
This summary is machine-generated.

Molecular magnets are increasingly used for low-temperature cooling. This review details their chemical variations and properties, highlighting new 3D materials that outperform traditional magnetic refrigerants.

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Area of Science:

  • Materials Science
  • Chemistry
  • Physics

Background:

  • Molecular magnets are gaining traction for advanced cooling technologies.
  • Traditional magnetic refrigerants face limitations in performance.

Purpose of the Study:

  • To review chemical variations and magnetothermal properties of molecular coolers.
  • To provide an overview of advancements in low-temperature magnetic refrigerants.
  • To introduce novel 3D materials with superior cooling capabilities.

Main Methods:

  • Literature review of reported molecular coolers.
  • Categorization based on structural dimensions, metal ions, and ligands.
  • Analysis of magnetothermal properties.

Main Results:

  • Detailed examination of chemical diversity in molecular magnets for cooling.
  • Identification of new 3D materials exhibiting enhanced cooling performance.
  • Comparison of molecular coolers with traditional magnetic refrigerants.

Conclusions:

  • Molecular magnets offer a promising avenue for efficient low-temperature cooling.
  • Novel 3D materials represent a significant advancement in magnetic refrigeration.
  • This review serves as a guide for new researchers and a progress summary for experts.