Vibronic interaction effects constitute a new field of investigation in the physics and
chemistry of molecules and crystals that combines all the phenomena and laws originating …

A detailed account is given of the theory of the Jahn-Teller effect in crystals containing (3d) n
paramagnetic impurity ions. The importance of using a complete lattice phonon system is …

The different oxidation states of chromium allow its bulk oxide form to be reducible,
facilitating the oxygen vacancy formation process, which is a key property in applications …

A novel type of sub-lattice of the Jahn-Teller (JT) centers was arranged in Ti-doped barium
hexaferrite BaFe12O19. In the un-doped crystal all iron ions, sitting in five different …

Abstract Analysis of the electron paramagnetic resonance spectra of Ni 3+ in Al 2 O 3 proves
conclusively that the Jahn-Teller effect for Ni 3+ is dynamic. The Ni 3+ ion occupies the …

A detailed investigation of the phonon-spin interaction in the system Ni 3+: Al 2 O 3 has
been carried out by low-temperature thermal conductivity measurements on single crystals …

Resonance ultrasound attenuation, albeit broadened, is observed in doped cubic crystal
ZnSe with a part of the Zn2+ ions substituted by magnetic anisotropic Cr2+ ions. In the …

The optical absorption spectrum of Ni doped Na2Zn (SO4) 2· 4 H2O shows that nickel enters
the lattice in its divalent state. ESR spectra of X‐irradiated sample show two doublets …

Abstract The dynamic Jahn-Teller model for the Ni 3+: Al 2 O 3 system is applied to new
EPR results with and without uniaxial stress. The experimental EPR data are fitted to an …

Elastic exchange between two nearest Jahn-Teller (JT) centers in two or three dimensional
dense crystals, can give an ordered macroscopic distortion known as cooperative JT effect …