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Elastic, Inelastic and Fracture Characteristics of Relaxor Ferroelectric Materials via Nanoindentation

  • 13-08-2024
  • Research paper
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Abstract

The article systematically investigates the mechanical properties of relaxor ferroelectric PMN-PT single crystal materials in their rhombohedral (R-phase) and tetragonal (T-phase) structures using nanoindentation. The study focuses on elastic modulus, hardness, and fracture characteristics, revealing significant depth dependence of the elastic modulus in the R-phase due to phase transitions. The research also highlights the elastic-inelastic deformation properties and critical stresses for transition, as well as the anisotropic fracture behaviors of both phases. SEM analysis of indentation morphologies at various depths provides insights into crack propagation and failure mechanisms, demonstrating the influence of phase structure on material reliability and service life.

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Title
Elastic, Inelastic and Fracture Characteristics of Relaxor Ferroelectric Materials via Nanoindentation
Authors
G. Man
Y. Jiang
X. Wang
Publication date
13-08-2024
Publisher
Springer US
Published in
Experimental Mechanics / Issue 9/2024
Print ISSN: 0014-4851
Electronic ISSN: 1741-2765
DOI
https://doi.org/10.1007/s11340-024-01103-8
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