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Due to its magnetic dipole moment, the neutron can be affected by a variation of the local magnetic field inside materials. This magnetic field often originates from atomic magnetic moments. On this page, we treat the basic interaction and magnetic scattering theory. Main topics in elastic magnetic scattering is explained on the [[Elastic magnetic scattering]] page, while the [[Inelastic magnetic scattering]] page is devoted to magnetic excitations and inelastic magnetic scattering. Magnetic scattering can also be performed with spin-polarised neutrons, where additional information on magnetic properties can be obtained. This is, however, outside the scope of these notes.

To simplify the presentation, we initially consider only magnetic fields arising from the spins of electrons in unpaired atomic orbitals. Later, we will describe the results from other types of magnetic fields, ''e.g.'' from orbital magnetic moments. A more complete treatment of magnetic neutron scattering theory is given in a number of textbooks, ''e.g.'' by Marshall and Lovesey<ref name="marshall">W. Marshall and S.W. Lovesey. ''Theory of Thermal Neutron Scattering'' (Oxford, 1971)</ref>.

The study of the orientation of magnetic moments in materials is a rich and diverse field,
in which neutron scattering is a key technique.
We will in this chapter turn to the study of magnetic structures by magnetic neutron diffraction,
while [[Inelastic magnetic scattering]] is devoted to the treatment of
inelastic magnetic scattering, e.g. from magnetic excitations.

Magnetic scattering can also be performed with spin-polarised neutrons,
where additional information on magnetic properties can be obtained.
This will be covered by a later version of these notes.

<references/>

{{TOC limit|3}}

= [[Magnetic ions]] =

{{:Magnetic ions}}


= [[Scattering of neutrons from magnetic ions]] =

{{:Scattering of neutrons from magnetic ions}}












 

[[Scattering from lattice vibrations|←]]   Previous page: [[Scattering from lattice vibrations]] 
[[Exercises in Magnetic neutron scattering|→]]   Exercises: [[Exercises in Magnetic neutron scattering]] 
[[Elastic magnetic scattering|→]]   Next page: [[Elastic magnetic scattering]]

Magnetic neutron scattering - Revision history

Wikiadmin: 1 revision imported

ucph>Tommy at 14:38, 29 August 2019