English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Multiscale characterization of damage tolerance in barium titanate thin films

Mathews, N. G., Saxena, A. K., Venkataramani, N., Dehm, G., & Jaya, B. N. (2022). Multiscale characterization of damage tolerance in barium titanate thin films. Journal of Applied Physics, 132(4): 045302. doi:10.1063/5.0095139.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files
hide Files
:
5.0095139.pdf (Publisher version), 3MB
Name:
5.0095139.pdf
Description:
Open Access
OA-Status:
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
2022
Copyright Info:
The Author(s)

Locators

show

Creators

show
hide
 Creators:
Mathews, Nidhin George1, Author           
Saxena, Ashish Kumar2, Author           
Venkataramani, Narayanan1, Author
Dehm, Gerhard3, Author           
Jaya, Balila Nagamani1, Author           
Affiliations:
1Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Mumbai 400076, Maharashtra, India, ou_persistent22              
2Nano-/ Micromechanics of Materials, Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863401              
3Structure and Nano-/ Micromechanics of Materials, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863398              

Content

show
hide
Free keywords: -
 Abstract: Barium titanate is a brittle, lead free ferroelectric and piezoelectric ceramic used in patterned and thin film forms in micro- and nano-scale electronic devices. Both during deposition and eventually during service, this material system develops stresses due to different loads acting on the system, which can lead to its failure due to cracking in the films and/or interface delamination. In situ microcantilever bending based fracture experiments and tensile tests based on shear lag tests in combination with digital image correlation were used to understand the cracking behavior of barium titanate films when deposited on flexible substrates. For the first time, the fracture behavior of these nanocrystalline barium titanate films has been quantified in terms of fracture toughness, fracture strength, and interface shear stresses for different film thicknesses. Critical defect size is estimated using the above information as a function of film thickness. It is found that damage tolerance in terms of fracture strength depends on film thickness. Furthermore, compared to a bulk single crystal, barium titanate fracture resistance of the nanocrystalline thin films is reduced. Both effects need to be considered in engineering design of reliable devices employing micro- and nano-scale barium titanate thin film structures.

Details

show
hide
Language(s): eng - English
 Dates: 2022-07-262022-07
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1063/5.0095139
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Applied Physics
  Abbreviation : J. Appl. Phys.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: New York, NY : AIP Publishing
Pages: - Volume / Issue: 132 (4) Sequence Number: 045302 Start / End Page: - Identifier: ISSN: 0021-8979
CoNE: https://pure.mpg.de/cone/journals/resource/991042723401880