Intermultiplet transitions in optically opaque EuBa{sub 2}Cu{sub 3}O{sub 7}: An inelastic neutron scattering study
Conference
·
OSTI ID:10158727
- Argonne National Lab., IL (United States)
- Laboratory for Neutron Scattering, Villigen, (Switzerland)
- St. Petersburg Nuclear Physics Institutel, Gatchina (Russia)
We report the results of inelastic neutron scattering (INS) studies of the J=0 to J=1 magnetic transitions in EuBa{sub 2}Cu{sub 3}O{sub 7}. The low J values of these multiplets restrict our crystal field analysis to the second order crystalline electric field (CEF) parameters B{sub o}{sup 2} and B{sub 2}{sup 2} obtained by fitting the splitting of the J=l multiplet, and the spin-orbit coupling parameter, which is used to fit the energy of the J=0 to J=l multiplet splitting. We compare our results to those derived from other INS studies on different rare earths, as well as with B{sub o}{sup 2} and B{sub 2}{sup 2} derived from Moessbauer studies. The J=O to J=l splitting observed here is smaller than previously seen by optical spectroscopic studies on a variety of transparent, ionic compounds, necessitating the inclusion of a free-ion parameter in the fitting procedure. This work represents the first time that a complete excited multiplet has been seen for R in RBa{sub 2}CU{sub 3}O{sub 7}. These results are particularly germane to crystal field analyses of the light rare earth ions in optically opaque materials, where assumptions about free-ion parameters are essential for a meaningful analysis.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10158727
- Report Number(s):
- ANL/CHM/CP--83030; CONF-9408111--1; ON: DE94013429
- Country of Publication:
- United States
- Language:
- English
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