Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine

Dishon, Shiri; Ushakov, Andrei; Nuraeva, Alla; Ehre, David; Lahav, Meir; Shur, Vladimir; Kholkin, Andrei; Lubomirsky, Igor

doi:10.3390/ma13204663

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Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine

¹,

²,

¹,

¹,

^2,3,*

and

Igor Lubomirsky

^1,*

Department of Materials and Interfaces, Weizmann Institute of Science, Herzl St 234, Rehovot 7610001, Israel

School of Natural Sciences and Mathematics, Ural Federal University, Lenin Ave. 51, 620000 Ekaterinburg, Russia

CICECO-Aveiro Institute of Materials, Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal

Authors to whom correspondence should be addressed.

Materials 2020, 13(20), 4663; https://doi.org/10.3390/ma13204663

Received: 27 September 2020 / Revised: 12 October 2020 / Accepted: 15 October 2020 / Published: 19 October 2020

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Abstract

Surface pyroelectricity and piezoelectricity induced by water incorporation during growth in α-glycine were investigated. Using the periodic temperature change technique, we have determined the thickness (~280 µm) of the near surface layer (NSL) and its pyroelectric coefficient (160 pC/(K × cm²) at 23 °C) independently. The thickness of NSL remains nearly constant till 60 °C and the pyroelectric effect vanishes abruptly by 70 °C. The piezoelectric effect, 0.1 pm/V at 23 °C measured with an interferometer, followed the same temperature dependence as the pyroelectric effect. Abrupt disappearance of both effects at 70 °C is irreversible and suggests that water incorporation to α-glycine forms a well defined near surface phase, which is different form α-glycine because it is polar but it too close to α-glycine to be distinguished by X-ray diffraction (XRD). The secondary pyroelectric effect was found to be <14% of the total, which is unexpectedly small for a material with a large thermal expansion coefficient. This implies that water incorporation infers minimal distortions in the host lattice. This finding suggests a path for the control of the piezoelectric and pyroelectric effects of the crystals using stereospecific incorporation of the guest molecules. View Full-Text

Keywords: surface pyroelectricity; surface piezoelectricity; α-glycine

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MDPI and ACS Style

Dishon, S.; Ushakov, A.; Nuraeva, A.; Ehre, D.; Lahav, M.; Shur, V.; Kholkin, A.; Lubomirsky, I. Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine. Materials 2020, 13, 4663. https://doi.org/10.3390/ma13204663

AMA Style

Dishon S, Ushakov A, Nuraeva A, Ehre D, Lahav M, Shur V, Kholkin A, Lubomirsky I. Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine. Materials. 2020; 13(20):4663. https://doi.org/10.3390/ma13204663

Chicago/Turabian Style

Dishon, Shiri, Andrei Ushakov, Alla Nuraeva, David Ehre, Meir Lahav, Vladimir Shur, Andrei Kholkin, and Igor Lubomirsky. 2020. "Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine" Materials 13, no. 20: 4663. https://doi.org/10.3390/ma13204663

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Surface Piezoelectricity and Pyroelectricity in Centrosymmetric Materials: A Case of α-Glycine

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