Influence of nickel (Ni7+) Swift Heavy Ion (SHI) irradiation on the optical, topological, dielectric, piezoelectric and ferroelectric properties of 011 oriented ferroelectric triglycine sulphate single crystals

Highlights: • 0 1 1 oriented room temperature ferroelectric Triglycine sulphate (TGS) single crystal have been irradiated with Ni⁷⁺ Swift heavy Ions (SHI) for the first time. • Upon irradiation, its band gap energy (E_g) has got modified. • Due to dispersive effects, SHI has greatly influenced its ferroelectric, Dielectric and piezoelectric properties of 0 1 1 TGS. • T_c was also found to have shifted towards higher temperature over the pristine one. Nickel (Ni⁷⁺) Swift Heavy Ion (SHI) irradiation effects on the optical, topological, dielectric, piezo- electric and ferroelectric properties of 0 1 1 oriented ferroelectric Triglycine sulphate (TGS) single crystals have been investigated. Dielectric constant found to have increased more than 9 fold upon irradiation. A marginal shift in T_c (325–332 K) has been noted upon irradiation. A significant improvement in the piezoelectric coefficient has been observed for irradiated samples when compared to the 0 1 1 pristine TGS. Ferroelectric studies reveal the decrease in coercive field due to the irradiation with Ni⁷⁺ ions. The results obtained from all studies have been discussed in detail.