Anomalous Temperature Dependence of the ESR Lines of Cr³⁺ Doped in TGS

Abstract

ESR spectrum of Cr³⁺ doped in TGS was reinvestigated. The principal values and the directions of the D-tensor for the lines which appeared at lower fields, were determined at 60°C in the paraelectric region. Each line was split into doublet in the ferroelectric region. It was ascertained from the angular dependence of the lines in the b-plane that this anomalous splitting originates from a tilting of the principal axis by the movement of the ligand atoms surrounding the Cr³⁺ ion.