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Updated: Dec 22, 2025

Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
Symmetry degeneration and room temperature ferroelectricity in ion-irradiated SrTiO3
F X Zhang1, Haizhou Xue2, J K Keum3
1Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America.
Abstract:
Polar phonon modes associated with room temperature ferroelectricity are observed in SrTiO3single crystals irradiated with Ti ions. Quantitative strain analysis reveals that irradiation-induced out-of-plane strain drives the centrosymmetric cubic SrTiO3to a tetragonal-like structure in the maximum damaged region. Energy transfer from ions to electrons during ion irradiation yields defects in SrTiO3that also plays an important role for the room temperature ferroelectricity. Different from thin film techniques, the ferroelectricity in the ion irradiated SrTiO3can occur for much larger thicknesses, depending on the energy and type of ion.
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