Small-Angle Neutron Scattering - Kfki
Small-Angle Neutron Scattering - Kfki
Small-Angle Neutron Scattering - Kfki
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Separation of nuclear and<br />
magnetic neutron scattering<br />
D-cyclohexane + Fe 3<br />
O 4<br />
/ OA (ϕ m ~ 1%)<br />
D-cyclohexane + Fe 3<br />
O 4<br />
/ MA (ϕ m ~ 1%)<br />
Mitglied in der Helmholtz-Gemeinschaft<br />
I(q), cm -1<br />
10<br />
1<br />
0.1<br />
fit by model “non-interacting<br />
polydisperse core-shell particles”<br />
F 2 N<br />
F 2 M<br />
Guinier<br />
approximations<br />
R g<br />
=8.0 nm<br />
R g<br />
=5.3 nm<br />
0.1 1<br />
q, nm -1<br />
I(q), cm -1<br />
10<br />
1<br />
0.1<br />
0.01<br />
1E-3<br />
R g<br />
=3.7 nm<br />
0.1 1<br />
q, nm -1<br />
R g<br />
=4 nm<br />
In contrast to correlation in particle locations, correlation in orientation of particle<br />
magnetic moments because of dipole-dipole interaction keeps its influence at small<br />
particle concentrations<br />
F 2 N<br />
F 2 M