Fracture toughening and toughness asymmetry induced by flexoelectricity

Amir Abdollahi, Christian Peco, Daniel Millán, Marino Arroyo, Gustau Catalan, Irene Arias

Research output: Contribution to journalArticle

28 Scopus citations
Original languageEnglish (US)
Article number094101
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number9
Publication statusPublished - Sep 8 2015


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

title = "Fracture toughening and toughness asymmetry induced by flexoelectricity",
abstract = "Cracks generate the largest strain gradients that any material can withstand. Flexoelectricity (coupling between strain gradient and polarization) must therefore play an important role in fracture physics. Here we use a self-consistent continuum model to evidence two consequences of flexoelectricity in fracture: the resistance to fracture increases as structural size decreases, and it becomes asymmetric with respect to the sign of polarization. The latter phenomenon manifests itself in a range of intermediate sizes where piezo- and flexoelectricity compete. In BaTiO3 at room temperature, this range spans from 0.1 to 50 nm, a typical thickness range for epitaxial ferroelectric thin films.",
author = "Amir Abdollahi and Christian Peco and Daniel Mill{\'a}n and Marino Arroyo and Gustau Catalan and Irene Arias",
year = "2015",
month = "9",
day = "8",
doi = "10.1103/PhysRevB.92.094101",
language = "English (US)",
volume = "92",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "9",