Observation of the Jahn-Teller splitting of three-valent D7 ions via orbach relaxation

I. Morgenstern, K.A. Müller, et al.

Zeitschrift für Physik B Condensed Matter

K.W. Blazey, P. Koidlt, et al.

Ferroelectrics

O.F. Schirmer, K.A. Müller, et al.

Physik der Kondensierten Materie

K.A. Müller

Solid State Communications