ESR Observation of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>Γ</mi></mrow><mrow><mn>6</mn></mrow></msub></mrow></math> Excited State of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Er</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow></math> in the Dilute Alloy PdEr

W. Zingg; H. Bill; J. Buttet; M. Peter

doi:10.1103/PhysRevLett.32.1221

ESR Observation of the $Γ_{6}$ Excited State of ${Er}^{3 +}$ in the Dilute Alloy PdEr

W. Zingg, H. Bill, J. Buttet, and M. Peter

Phys. Rev. Lett. 32, 1221 – Published 3 June 1974

Abstract

We report the first ESR signal of an excited crystalline state ( $Γ_{6}$ ) in a metal (PdEr). The intensity of the $Γ_{6}$ isotropic resonance compared to the $Γ_{8}^{(3)}$ resonances of the ground-state quarter allows the determination of the energy scaling parameter $W$ of the crystalline field. A more precise value is deduced from the splitting of the transitions 1 → 2 and 3 → 4 of the $Γ_{8}^{(3)}$ ground state: $W = - 0.163 \pm 0.015$ K, in accordance with the work of Praddaude.