2018/04/17 by M. A. Hosain, Hosain, M. A.
Chemistry · Materials Science · #Molecular spectroscopy and chirality #Glass properties and applications #Advanced NMR Techniques and Applications
paper · pdf · doi:10.48550/arxiv.1804.06320
Ultrasnsitive multi-mode electron spin resonance spectroscopy in the SrLaAlO4 dielectric resonator at 20~mK reveals ferromagnetic states of Mn4+ impurity ion. The formation of ferromagnetic states in the MnO6 complex implies to oxygen deficiency of this multi-valence Mn4+ ion. Experiment results supports that an intricate electronic hybridization in MnO6 structural instability is related to Pseudo Jahn-Teller effect. Measured dipolar hyperfine structure parameter of nucleus is P\scriptscriptstyle∥ =-3.7× 10-4~cm-1. Mean inverse third power of the electron distance is ⟨ rq-3⟩=3.325~a.u. assuming nuclear electric quadruple moment Q=+0.33(1)~barn. In such a state, giant g-factor is observed due to magneto (ferromagnetic) impedance taking in to account a two-level system on the adiabatic-potential-energy-surface. The spins exhibited parity is opposite in the interaction of highest-occupied-molecular-orbital and lowest-unoccupied-molecular-orbital coupling.