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https://hdl.handle.net/10316/112087
Title: | Local piezo- and ferroelectric properties of γ-glycine single crystal observed via piezoresponse force microscopy | Authors: | Ivanov, Maxim Buryakov, Arseniy Khusyainov, Dinar Silibin, Maxim Vilarinho, Paula M. Paixão, José António |
Keywords: | organic piezo- and ferroelectrics; γ-phase glycine single crystal; piezoresponse force microscopy (PFM) | Issue Date: | 2023 | Publisher: | Institute of Physics Publishing | Project: | UIDB/50011/2020 UIDP/50011/2020 LA/P/0006/2020 |
Serial title, monograph or event: | Physica Scripta | Volume: | 98 | Issue: | 8 | Abstract: | In this work, we demonstrate an approach of local mechanical polishing processing to modify the type of intrinsic piezoelectric activity of γ-glycine polymorph grown in a form of a single crystal. By using the piezoresponse force microscopy, the increase in intensity for both out-of-plane (3 times) and inplane (5 times) piezoelectric tensor components is demonstrated. Application of local switching spectroscopy reveals the piezoelectric behavior of non-polished and the ferroelectric behavior of polished areas being related to the local mechanical polishing-assistant rearrangement ofNH3+ tails of zwitterions in polymorph molecular chain of γ-glycine. These rearrangements were demonstrated to facilitate the switching behavior of the local dipole moment at the applied electric field surpassing the internal coercive field of about Ec∼3GV/m . | URI: | https://hdl.handle.net/10316/112087 | ISSN: | 0031-8949 1402-4896 |
DOI: | 10.1088/1402-4896/ace861 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais I&D CFis - Artigos em Revistas Internacionais |
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