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Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures

Magneto-piezoelectric effect (MPE) refers to generation of strain in response to electric currents in magnetic metals which lack both time-reversal and space-inversion symmetries. A recent experimental paper demonstrated the MPE in the antiferromagnetic metal EuMnBi(2) at 77 K, but the limited tempe...

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Autores principales: Shiomi, Yuki, Masuda, Hidetoshi, Takahashi, Hidefumi, lshiwata, Shintaro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200733/
https://www.ncbi.nlm.nih.gov/pubmed/32372015
http://dx.doi.org/10.1038/s41598-020-64530-2
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author Shiomi, Yuki
Masuda, Hidetoshi
Takahashi, Hidefumi
lshiwata, Shintaro
author_facet Shiomi, Yuki
Masuda, Hidetoshi
Takahashi, Hidefumi
lshiwata, Shintaro
author_sort Shiomi, Yuki
collection PubMed
description Magneto-piezoelectric effect (MPE) refers to generation of strain in response to electric currents in magnetic metals which lack both time-reversal and space-inversion symmetries. A recent experimental paper demonstrated the MPE in the antiferromagnetic metal EuMnBi(2) at 77 K, but the limited temperature range of the MPE measurement hampered detailed discussion on the MPE. Here we extend the measurement temperature range down to liquid He temperature, and studied the dependences of the MPE on the laser position, frequency and amplitude of electric currents, and temperature in the very low temperature range. We show that the MPE signal is enhanced at low temperatures and reaches a maximum magnitude in the antiferromagnetically ordered states of both Eu and Mn ions. An effective piezoelectric coefficient for the MPE at 4.5 K is estimated to be as large as 3500 pC/N, which is much larger than piezoelectric coefficients of typical piezoelectric ceramics, although the magnitude of real MPE displacements should be limited due to strong Joule heating at high electric currents. The present results may open up a new strategy to realize new lead-free piezoelectric materials.
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spelling pubmed-72007332020-05-12 Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures Shiomi, Yuki Masuda, Hidetoshi Takahashi, Hidefumi lshiwata, Shintaro Sci Rep Article Magneto-piezoelectric effect (MPE) refers to generation of strain in response to electric currents in magnetic metals which lack both time-reversal and space-inversion symmetries. A recent experimental paper demonstrated the MPE in the antiferromagnetic metal EuMnBi(2) at 77 K, but the limited temperature range of the MPE measurement hampered detailed discussion on the MPE. Here we extend the measurement temperature range down to liquid He temperature, and studied the dependences of the MPE on the laser position, frequency and amplitude of electric currents, and temperature in the very low temperature range. We show that the MPE signal is enhanced at low temperatures and reaches a maximum magnitude in the antiferromagnetically ordered states of both Eu and Mn ions. An effective piezoelectric coefficient for the MPE at 4.5 K is estimated to be as large as 3500 pC/N, which is much larger than piezoelectric coefficients of typical piezoelectric ceramics, although the magnitude of real MPE displacements should be limited due to strong Joule heating at high electric currents. The present results may open up a new strategy to realize new lead-free piezoelectric materials. Nature Publishing Group UK 2020-05-05 /pmc/articles/PMC7200733/ /pubmed/32372015 http://dx.doi.org/10.1038/s41598-020-64530-2 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shiomi, Yuki
Masuda, Hidetoshi
Takahashi, Hidefumi
lshiwata, Shintaro
Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title_full Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title_fullStr Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title_full_unstemmed Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title_short Large Magneto-piezoelectric Effect in EuMnBi(2) Single Crystal at Low Temperatures
title_sort large magneto-piezoelectric effect in eumnbi(2) single crystal at low temperatures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7200733/
https://www.ncbi.nlm.nih.gov/pubmed/32372015
http://dx.doi.org/10.1038/s41598-020-64530-2
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