Magnetic spectroscopy at high pressures using x-ray magnetic circular dichroism.
The imbalance in the electronic density of states between spin-up and spin-down electrons characteristic of ferro(ferri)-magnetic materials gives rise to X-ray magnetic circular dichroism (XMCD) in the absorption of circularly polarized X-rays with opposite helicity. These dichroic effects are largest near element-selective atomic resonances and can be used to probe ferro(ferri)-magnetic ordering with element- and electronic orbital-selectivity. We describe recent developments at the Advanced Photon Source that allow measurements of XMCD in a diamond anvil cell. We discuss the challenges associated with these measurements as well as their potential to further our understanding of complex magnetic materials.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 973775
- Report Number(s):
- ANL/XSD/JA-61087
- Journal Information:
- High Pressure Res., Journal Name: High Pressure Res. Journal Issue: 3 ; 2008 Vol. 28; ISSN 0895-7959; ISSN HPRSEL
- Country of Publication:
- United States
- Language:
- ENGLISH
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