Resonant nuclear Bragg diffraction from epitaxial sup 57 Fe sub 2 O sub 3 on natural Fe sub 2 O sub 3

Journal Article · Sun Dec 15 04:00:00 EST 1991 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.349705· OSTI ID:6188799

Tischler, J Z; Larson, B C ^[1]

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1. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee (USA)

We have used a {sup 57}Co Moessbauer source to measure the resonant nuclear scattering properties of epitaxial {sup 57}Fe{sub 2}O{sub 3} grown on natural Fe{sub 2}O{sub 3} substrates. Isotopically enriched {sup 57}Fe{sub 2}O{sub 3} layers were grown on {l angle}111{r angle} oriented Fe{sub 2}O{sub 3} by chemical vapor transport; Mo {ital K}{alpha} rocking curve measurements showed the mosaic spread of the epitaxial layers to be {similar to}15 arcs. The resonant nuclear scattering properties were characterized by absolute integrated intensity measurements of the (electronic and nuclear resonant) 666 reflection and the (pure nuclear resonant) 777 reflection as a function of energy near the resonance. The energy widths of the diffracted intensities were found to be {similar to}40 neV ({similar to}10{Gamma}) and the integrated intensities were found to lie between the values calculated from kinematic and dynamic diffraction theories. The results indicate that epitaxial crystals such as these can be used for resonant nuclear monochromators to obtain resonant x-ray beams from synchrotron sources.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6188799
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 70:12; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
43 PARTICLE ACCELERATORS
430303 -- Particle Accelerators-- Experimental Facilities & Equipment
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BRAGG REFLECTION
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
EVEN-ODD NUCLEI
FEASIBILITY STUDIES
GAMMA RADIATION
INELASTIC SCATTERING
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
IRON 57
IRON COMPOUNDS
IRON ISOTOPES
IRON OXIDES
ISOTOPES
MOESSBAUER EFFECT
MONOCHROMATORS
NUCLEAR PHYSICS
NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICS
RADIATIONS
REFLECTION
RESONANCE SCATTERING
SCATTERING
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION