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Spectroscopic Determination of Crystal‐Field Levels of Pr3+in the Paramagnetic Metallic Compound PrBi

 

作者: R. J. Birgeneau,   E. Bucher,   L. Passell,   D. L. Price,   K. C. Turberfield,  

 

期刊: Journal of Applied Physics  (AIP Available online 1970)
卷期: Volume 41, issue 3  

页码: 900-901

 

ISSN:0021-8979

 

年代: 1970

 

DOI:10.1063/1.1659009

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The Pr3+4f23H4manifold is split by an octahedral crystal field into four levels &Ggr;1, &Ggr;3, &Ggr;4, and &Ggr;5. Transitions between these levels in PrBi have been measured using neutron time‐of‐flight spectrometry. Peaks in the observed spectra corresponding to crystal‐field transitions are identified both by their temperature dependence and by comparison with corresponding data from (nonmagnetic) LaBi. Well resolved crystal‐field transitions are observed at 11.7 and 5.8±0.6 meV at 90°K. Additional scattering observed at room temperature is consistent with unresolved transitions at 7.6 and 4.1 meV. As it is known from magnetic measurements that the &Ggr;1singlet lies lowest, these four transitions may be identified as &Ggr;5to &Ggr;4, &Ggr;4to &Ggr;1, &Ggr;5to &Ggr;3and &Ggr;3to &Ggr;4respectively, thus accounting for all transitions allowed by magnetic‐dipole selection rules. These data give the parametersA40⟨r4⟩=6.89±0.30 meVandA60⟨r6⟩=0.24±0.10 meV.

 

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