Electron Paramagnetic Resonance of Gd3+ in Single Crystals of Various Rare-Earth Ethyl Sulfates at Room Temperature and at 77°K
1972; American Institute of Physics; Volume: 57; Issue: 7 Linguagem: Inglês
10.1063/1.1678648
ISSN1520-9032
AutoresRoger E. Gerkin, David L. Thorsell,
Tópico(s)Luminescence Properties of Advanced Materials
ResumoElectron paramagnetic resonance studies of Gd3+ in single crystals of Ln(C2H5SO4)3· 9 H2O (where Ln3+ denotes La3+, Pr3+, Nd3+, Sm3+, Tb3+, Dy3+, Ho3+, Er3+, Yb3+, and Lu3+) have been carried out at X band at room temperature and at 77°K. The spin Hamiltonian parameters b20, b40, and b60 and g‖ have been evaluated at both temperatures for each host except terbium ethyl sulfate at 77°K. The absorption linewidths for each transition have been measured at both temperatures. The present results are compared with previous results. A principal conclusion is that the magnitude of b20 for Gd3+ in the various rare-earth ethyl sulfates is more nearly a linear function of the ionic radius of the trivalent host ion than of its atomic number.
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