Elastic deformations during phase transition in freestanding BaTiO3 thin films

Jaya P. Nair, Natalie Stavitski, Ilya Zon, Konstantin Gartsman, Igor Lubomirsky

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Elastic deformations during phase transition in freestanding BaTiO3 thin films were investigated. BaTiO3 films were prepared by sol-gel technique or RF magnetron sputtering on silicon substrates, covered by randomly oriented 120 nm thick Al2O3. The as-deposited films were under tensile stress of 100-170 MPa and did not show neither pyroelectric nor piezoelectric properties. Partial substrate removal caused the freestanding films to expand laterally by 0.3-0.5% and corrugate. Dielectric constant of the freestanding films (620±10) was found to be significantly higher than that of the substrate supported films (110±20). The freestanding films showed detectable piezoelectric effect, which indicated that the lateral expansion was originated from the substrate-suppressed cubic-tetragonal phase transition.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium - Proceedings
EditorsR Wentzcovitch, A Navrotsky, K Poeppelmeier
Pages245-250
Number of pages6
Volume718
Publication statusPublished - 2002
EventPerovskite Materials - San Francisco, CA, United States
Duration: Apr 1 2002Apr 5 2002

Other

OtherPerovskite Materials
CountryUnited States
CitySan Francisco, CA
Period4/1/024/5/02

Fingerprint

Elastic deformation
Phase transitions
Thin films
Substrates
Piezoelectricity
Silicon
Tensile stress
Magnetron sputtering
Sol-gels
Permittivity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Nair, J. P., Stavitski, N., Zon, I., Gartsman, K., & Lubomirsky, I. (2002). Elastic deformations during phase transition in freestanding BaTiO3 thin films. In R. Wentzcovitch, A. Navrotsky, & K. Poeppelmeier (Eds.), Materials Research Society Symposium - Proceedings (Vol. 718, pp. 245-250)

Elastic deformations during phase transition in freestanding BaTiO3 thin films. / Nair, Jaya P.; Stavitski, Natalie; Zon, Ilya; Gartsman, Konstantin; Lubomirsky, Igor.

Materials Research Society Symposium - Proceedings. ed. / R Wentzcovitch; A Navrotsky; K Poeppelmeier. Vol. 718 2002. p. 245-250.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nair, JP, Stavitski, N, Zon, I, Gartsman, K & Lubomirsky, I 2002, Elastic deformations during phase transition in freestanding BaTiO3 thin films. in R Wentzcovitch, A Navrotsky & K Poeppelmeier (eds), Materials Research Society Symposium - Proceedings. vol. 718, pp. 245-250, Perovskite Materials, San Francisco, CA, United States, 4/1/02.
Nair JP, Stavitski N, Zon I, Gartsman K, Lubomirsky I. Elastic deformations during phase transition in freestanding BaTiO3 thin films. In Wentzcovitch R, Navrotsky A, Poeppelmeier K, editors, Materials Research Society Symposium - Proceedings. Vol. 718. 2002. p. 245-250
Nair, Jaya P. ; Stavitski, Natalie ; Zon, Ilya ; Gartsman, Konstantin ; Lubomirsky, Igor. / Elastic deformations during phase transition in freestanding BaTiO3 thin films. Materials Research Society Symposium - Proceedings. editor / R Wentzcovitch ; A Navrotsky ; K Poeppelmeier. Vol. 718 2002. pp. 245-250
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