Abstract
Covalent contributions to the optical splitting of rare-earth ions are discussed. Tm2+ in CaF2, the system studied by Bleaney, Axe, and Burns, and others, was chosen because it is an outstanding example of the breakdown of the traditional electrostatic theory when applied to rare-earth ions in cubic environments. Upon separating out overlap from covalent contributions, overlap effects are found to dominate. The role of the closed 5p shell in covalent mixing is shown to be as important as, or more important than, that due to the 4f shell alone.
| Original language | English |
|---|---|
| Pages (from-to) | 251-258 |
| Number of pages | 8 |
| Journal | Physical Review |
| Volume | 156 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1967 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Covalent effects in rare-earth crystal-field splittings. / Watson, R. E.; Freeman, Arthur J.
In: Physical Review, Vol. 156, No. 2, 1967, p. 251-258.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Covalent effects in rare-earth crystal-field splittings
AU - Watson, R. E.
AU - Freeman, Arthur J
PY - 1967
Y1 - 1967
N2 - Covalent contributions to the optical splitting of rare-earth ions are discussed. Tm2+ in CaF2, the system studied by Bleaney, Axe, and Burns, and others, was chosen because it is an outstanding example of the breakdown of the traditional electrostatic theory when applied to rare-earth ions in cubic environments. Upon separating out overlap from covalent contributions, overlap effects are found to dominate. The role of the closed 5p shell in covalent mixing is shown to be as important as, or more important than, that due to the 4f shell alone.
AB - Covalent contributions to the optical splitting of rare-earth ions are discussed. Tm2+ in CaF2, the system studied by Bleaney, Axe, and Burns, and others, was chosen because it is an outstanding example of the breakdown of the traditional electrostatic theory when applied to rare-earth ions in cubic environments. Upon separating out overlap from covalent contributions, overlap effects are found to dominate. The role of the closed 5p shell in covalent mixing is shown to be as important as, or more important than, that due to the 4f shell alone.
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UR - http://www.scopus.com/inward/citedby.url?scp=0039633296&partnerID=8YFLogxK
U2 - 10.1103/PhysRev.156.251
DO - 10.1103/PhysRev.156.251
M3 - Article
VL - 156
SP - 251
EP - 258
JO - Physical Review
JF - Physical Review
SN - 0031-899X
IS - 2
ER -