Observation of magnetic structure by resonant magnetic x-ray diffraction
Inquiry number
SOL-0000000908
Beamline
BL22XU (JAEA Actinide Science I)
Scientific keywords
| A. Sample category | inorganic material |
|---|---|
| B. Sample category (detail) | magnetic material |
| C. Technique | X-ray diffraction |
| D. Technique (detail) | magnetic scattering |
| E. Particular condition | polarization (linear), low-T (~ liquid He) |
| F. Photon energy | intermediate (2-4 keV), X-ray (4-40 keV) |
| G. Target information | spin/magnetism |
Industrial keywords
| level 1---Application area | storage device |
|---|---|
| level 2---Target | HD,MO |
| level 3---Target (detail) | magnetic layer |
| level 4---Obtainable information | magnetic moment, magnetic anisotropy |
| level 5---Technique | diffraction, magnetic scattering, magnetic Compton scattering, PEEM |
Classification
A80.14 magnetic materials, M25.10 magnetic scattering
Body text
Resonant magnetic x-ray diffraction is a powerful method for measuring a magnetic structure by x-ray diffraction tuning the energy near an absorption edge.It can determine magnetic the propagation vector and direction of magnetic moments. One advantage over neutron scattering or non-resonant magnetic x-ray scattering is selectivity of element and electron shell. Especially very large resonant signals can be observed for actinide M4 and M5 edges because excitations from core to orbital electrons, which carry magnetic moments, take place in the resonant process.
Figure shows the dependence of a magnetic reflection on azimuthal angle (rotation around the scattering vector) measured for the U M4 edge of UNiGa5. Filled circles and open circles represent -' and -' polarization, respectively and solid lines are calculated curves.We can determine from the fitted results that the magnetic propagation vector is Q=(1/2,1/2,1/2) and the magnetic moments align along the c axis.
Source of the figure
Private communication/others
Description
Technique
Energy of x-ray is tuned near the absorption edge. We scan the reciprocal lattice space to find magnetic propagation vector. The direction of the magnetic moment is determined from the azimuthal angle dependence of the magnetic Bragg reflection with the polarization analysis.
Source of the figure
No figure
Required time for experimental setup
1 day(s)
Instruments
| Instrument | Purpose | Performance |
|---|---|---|
| Experimental hutch 3 | resonant x-ray diffraction | Energy above 3.5 keV |
References
| Document name |
|---|
| S. W. Lovesey and S. P. Collins, "X-ray Scattering and Absorption by Magnetic Materials" (Oxford Science Publications, 1996) |
Related experimental techniques
Questionnaire
This solution is an application of a main instrument of the beamline.
Ease of measurement
With a great skill
Ease of analysis
With a great skill
How many shifts were needed for taking whole data in the figure?
Four-nine shifts