How we measure magnetisation in antiferromagnetics?

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Discussion Overview

The discussion centers on methods for measuring magnetisation in antiferromagnetic materials, particularly focusing on the magnetisation of two sublattices, A and B. Various techniques such as neutron scattering, NMR, SQUID devices, and muon spin rotation are explored.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants propose using neutron scattering to measure magnetisation in sublattices A and B, questioning how this method works.
  • Others suggest that a SQUID device could be built onto the material for measurement.
  • One participant mentions that both neutron scattering and NMR are viable methods for measuring magnetisation.
  • A later reply introduces muon spin rotation as another potential measurement technique.
  • One participant inquires about references for NMR as a measurement technique.
  • Another participant explains that the magnetic structure factor, S(q), can be measured using elastic neutron scattering, which can then be used to propose a magnetic structure.

Areas of Agreement / Disagreement

Participants express multiple competing views on the best methods for measuring magnetisation in antiferromagnetic materials, with no consensus reached on a single preferred technique.

Contextual Notes

Some methods mentioned may depend on specific experimental conditions or definitions, and the discussion does not resolve the effectiveness or applicability of each proposed technique.

Petar Mali
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Suppose that antiferromagnetic material have two sublattice. How can we measure magnetisation in sublattice A and in sublattice B? Maybe neutron scattering? How that work? Is NMR good solution maybe?
 
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A SQUID device built right onto the material?

Zz.
 
ZapperZ said:
A SQUID device built right onto the material?

Zz.

Thanks for your answer. Is there some source on the internet where I could read more about it?
 
Petar Mali said:
Suppose that antiferromagnetic material have two sublattice. How can we measure magnetisation in sublattice A and in sublattice B? Maybe neutron scattering? How that work? Is NMR good solution maybe?

Yes, both certainly viable. Another one is muon spin rotation.
 
Do you have some reference for NMR?
 
You can measure the magnetic structure factor, S(q) using elastic neutron scattering. You then can propose a magnetic structure that will match S(q). It works just like measuring the lattice structure.
 

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