Better Resolution of High-Spin Cobalt Hyperfine at Low Frequency: Co-Doped Ba(Zn_1/3Ta_2/3)O₃ as a Model Complex

Abstract

Low-frequency electron paramagnetic resonance (EPR) is used to extract the EPR parameter A-mid and support the approximate X-band value of g-mid for Ba(CoyZn1/3−yTa2/3)O3. Although the cobalt hyperfine structure for the |±1/2〉 state is often unresolved at X-band or S-band, it is resolved in measurements on this compound. This allows for detailed analysis of the molecular orbital for the |±1/2〉 state, which is often the ground state. Moreover, this work shows that the EPR parameters for Co substituted into Zn compounds give important insight into the properties of zinc binding sites.

Keywords

• electron paramagnetic resonance
• EPR
• multifrequency EPR
• high-spin cobalt complex
• resolution of <b><i>A</i></b>-mid