Ferroelectrics as Smart Mechanical Materials

Autor: Kumara Cordero-Edwards, Gustau Catalan, Amir Abdollahi, Neus Domingo, Jordi Sort
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria
Rok vydání: 2017
Předmět:
Materials science
Field theory (Physics)
Ferroelectric memories
Ferroelectricity
74 Mechanics of deformable solids::74B Elastic materials [Classificació AMS]
media_common.quotation_subject
Flexoelectricity
Matemàtiques i estadística::Matemàtica aplicada a les ciències [Àrees temàtiques de la UPC]
Nanotechnology
Mechanical properties
02 engineering and technology
01 natural sciences
Asymmetry
Indentation
0103 physical sciences
70 Mechanics of particles and systems::70S Classical field theories [Classificació AMS]
General Materials Science
Strength of materials
Camps
Teoria dels (Física)
010306 general physics
Resistència de materials
media_common
Condensed matter physics
Matemàtiques i estadística::Anàlisi numèrica::Modelització matemàtica [Àrees temàtiques de la UPC]
Mechanical Engineering
Elasticitat
74 Mechanics of deformable solids::74E Material properties given special treatment [Classificació AMS]
Nanoindentation
021001 nanoscience & nanotechnology
Polarization (waves)
Piezoelectricity
Elasticity
Mechanical reading polarity
Mechanics of Materials
0210 nano-technology
Material properties
Zdroj: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Recercat. Dipósit de la Recerca de Catalunya
instname
ISSN: 1521-4095
Popis: This is the peer reviewed version of the following article: Cordero, K., Domingo Marimon, Neus, Abdollahi, A., Sort Viñas, Jordi, Catalan, G. Ferroelectrics as smart mechanical materials. "Advanced materials", 21 Juliol 2017, vol. 29, núm. 37, p. 1-6, which has been published in final form at DOI: 10.1002/adma.201702210. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. The mechanical properties of materials are insensitive to space inversion, even when they are crystallographically asymmetric. In practice, this means that turning a piezoelectric crystal upside down or switching the polarization of a ferroelectric should not change its mechanical response. Strain gradients, however, introduce an additional source of asymmetry that has mechanical consequences. Using nanoindentation and contact-resonance force microscopy, this study demonstrates that the mechanical response to indentation of a uniaxial ferroelectric (LiNbO3) does change when its polarity is switched, and use this mechanical asymmetry both to quantify its flexoelectricity and to mechanically read the sign of its ferroelectric domains.
Databáze: OpenAIRE
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