The piezoelectric effect in novel 1–3-type composites with lead-free components is studied in terms of the effective piezoelectric coefficients d3j* and g3j*, electromechanical coupling factors k3j* and anisotropy factors d33* / d31* and k33* / k31*. The piezoelectric component is either a domain-engineered [001]-poled single crystal or a poled ceramic, and both the single crystal and ceramic are based on ferroelectric alkali-niobate—alkali-tantalate solid solutions. In the studied composites this component represents a system of long rods that are oriented parallel to the poling axis OX3, and the rods are surrounded by a large piezo-passive polymer matrix that can be either monolithic (in 1–3 composites) or porous (in 1–3–0 composites). The high level of piezoelectric sensitivity of the lead-free 1–3 and 1–3–0 composites is noted due to the longitudinal piezoelectric coefficient g33* ~ 102–103 mV.m / N. Conditions for a large anisotropy d33∗ / | d31∗ | = g33* / | g31* | ≥ 5 and k33* / | k31* | ≥ 5 are valid in specific volume-fraction ranges of the ferroelectric component and porosity in the polymer component. The important role of the pore shape in achieving the large anisotropy of d3j* and k3j* of the 1–3–0 composite is discussed. The studied 1–3-type composites are of interest for the selection of advanced piezoelectric materials for transducer, sensor and related applications, with additional respect to the environment due to the lead-free nature of the composite components.

Original languageEnglish
Title of host publicationSpringer Proceedings in Materials
Place of PublicationU. S. A.
PublisherSpringer Nature
Number of pages16
ISBN (Electronic)9783030764814
ISBN (Print)9783030764807
Publication statusE-pub ahead of print - 11 Aug 2021

Publication series

NameSpringer Proceedings in Materials
ISSN (Print)2662-3161
ISSN (Electronic)2662-317X

Bibliographical note

Funding Information:
The authors would like to thank Prof. Dr. A. E. Panich and Prof. Dr. I. A. Parinov (Southern Federal University, Russia), and Prof. Dr. P. Bisegna (University of Rome Tor Vergata, Italy) for their research interest in the piezoelectric performance of advanced composites. Research was financially supported by Southern Federal University, grant No. VnGr-07/2020-04-IM (Ministry of Science and Higher Education of the Russian Federation).


  • Anisotropy factor
  • Composite
  • Lead-free
  • Piezoelectric coefficient
  • Piezoelectric sensitivity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Renewable Energy, Sustainability and the Environment


Dive into the research topics of 'Piezoelectric Sensitivity and Anisotropy in 1–3-Type Composites Based on Lead-Free Ferroelectrics'. Together they form a unique fingerprint.

Cite this