Difference between Zero-Field Cooling and Field Cooling

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SUMMARY

The discussion focuses on the differences between Zero-Field Cooling (ZFC) and Field Cooling (FC) in the context of studying the properties of FeTeSe, a type-II superconductor. ZFC involves cooling the sample without an applied magnetic field before measuring magnetization, while FC entails applying a magnetic field during the cooling process. This distinction is crucial as it affects the formation of magnetic vortices within the superconductor, influencing its magnetic properties and behavior under varying temperatures.

PREREQUISITES
  • Understanding of superconductivity and type-II superconductors
  • Familiarity with magnetization measurement techniques
  • Knowledge of magnetic vortex formation in superconductors
  • Basic concepts of Zero-Field Cooling and Field Cooling methods
NEXT STEPS
  • Research the principles of superconductivity in type-II superconductors
  • Study the effects of magnetic fields on superconducting materials
  • Examine the formation and behavior of magnetic vortices in superconductors
  • Read Tinkham's book on superconductivity for in-depth theoretical insights
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Researchers and students in condensed matter physics, experimental physicists studying superconductors, and anyone interested in the magnetic properties of materials like FeTeSe.

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I am currently doing a experimental project work on superconductors. I am supposed to study properties of FeTeSe.
I am having trouble understanding the difference between Zero-Field Cooling and Field Cooling. In both cases, I am measuring magnetization with varying temperature (from lower to higher) while a non-zero magnetic field is applied. Why does it make a difference whether I cool after applying field or apply field after the temperature has been lowered as required.
 
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FeTeSe is presumably a type-II superconductor, right?
What does that mean in terms of how it reacts to an applied magnetic field?

Hint: Look up some information about the formation of vortices in a textbook (see e.g. Tinkham's book)
 

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