$sup 160$Dy and $sup 166$Er Moessbauer studies of concentrated and dilute rare earth dihydrides: Single-line compounds and crystal-field effects
Mossbauer-effect measurements on the cubic intermetallic rare-earth dihydrides are reported utilizing the 86.8-keV and the 80.6-keV 2$sup +$ $Yields$ 0$sup +$ $gamma$ transitions of $sup 160$Dy and $sup 166$Er, respectively. All studies were carried out at liquid-helium temperatures on pure and dilute (with Y or Sc) paramagnetic samples. In the more concentrated alloys spin-spin (4f-4f) relaxation rates at 4.2 K are sufficiently fast to allow for the use of these systems as narrow-single-line Mossbauer sources and absorbers. Measurements on highly dilute $sup 160$Dy and $sup 166$Er impurities in YH$sub 2$ reveal the resolved paramagnetic hyperfine structure of a GAMMA$sub 7$ crystalline electric field (CEF) ground state in both cases. The results are discussed in terms of CEF theory. (AIP)
- Research Organization:
- Physik Department, Technische Universitat Munchen, D-8046 Garching, Germany
- NSA Number:
- NSA-33-017646
- OSTI ID:
- 4118643
- Journal Information:
- Phys. Rev., B, v. 12, no. 11, pp. 4805-4811, Other Information: Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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