skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Ferroelectric-like response from the surface of SrTiO₃ crystals at high temperatures

Abstract

Since SrTiO₃ has a high dielectric constant, it is used as a substrate for a large number of complex physical systems for electrical characterization. Since SrTiO₃ crystals are known to be non-ferroelectric/non-piezoelectric at room temperature and above, SrTiO₃ has been believed to be a good choice as a substrate/base material for PFM (Piezoresponse Force Microscopy) on novel systems at room temperature. In this paper, from PFM-like measurement using an atomic force microscope on bare crystals of (110) SrTiO₃ we show that ferroelectric and piezoelectric-like response may originate from bare SrTiO₃ at remarkably high temperatures up to 420 K. Electrical domain writing and erasing are also possible using a scanning probe tip on the surface of SrTiO₃ crystals. This observation indicates that the role of the electrical response of SrTiO₃ needs to be revisited in the systems where signature of ferroelectricity/piezoelectricity has been previously observed with SrTiO₃ as a substrate/base material.

Authors:
; ; ;  [1]
  1. Department of Physical Sciences, Indian Institute of Science Education and Research Mohali (IISER M), Sector 81, S. A. S. Nagar, Manauli PO 140306 (India)
Publication Date:
OSTI Identifier:
22305972
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMIC FORCE MICROSCOPY; CRYSTALS; FERROELECTRIC MATERIALS; PERMITTIVITY; PIEZOELECTRICITY; STRONTIUM TITANATES; SUBSTRATES; SURFACES; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Jyotsna, Shubhra, Arora, Ashima, Sekhon, Jagmeet S., and Sheet, Goutam, E-mail: goutam@iisermohali.ac.in. Ferroelectric-like response from the surface of SrTiO₃ crystals at high temperatures. United States: N. p., 2014. Web. doi:10.1063/1.4895484.
Jyotsna, Shubhra, Arora, Ashima, Sekhon, Jagmeet S., & Sheet, Goutam, E-mail: goutam@iisermohali.ac.in. Ferroelectric-like response from the surface of SrTiO₃ crystals at high temperatures. United States. doi:10.1063/1.4895484.
Jyotsna, Shubhra, Arora, Ashima, Sekhon, Jagmeet S., and Sheet, Goutam, E-mail: goutam@iisermohali.ac.in. Sun . "Ferroelectric-like response from the surface of SrTiO₃ crystals at high temperatures". United States. doi:10.1063/1.4895484.
@article{osti_22305972,
title = {Ferroelectric-like response from the surface of SrTiO₃ crystals at high temperatures},
author = {Jyotsna, Shubhra and Arora, Ashima and Sekhon, Jagmeet S. and Sheet, Goutam, E-mail: goutam@iisermohali.ac.in},
abstractNote = {Since SrTiO₃ has a high dielectric constant, it is used as a substrate for a large number of complex physical systems for electrical characterization. Since SrTiO₃ crystals are known to be non-ferroelectric/non-piezoelectric at room temperature and above, SrTiO₃ has been believed to be a good choice as a substrate/base material for PFM (Piezoresponse Force Microscopy) on novel systems at room temperature. In this paper, from PFM-like measurement using an atomic force microscope on bare crystals of (110) SrTiO₃ we show that ferroelectric and piezoelectric-like response may originate from bare SrTiO₃ at remarkably high temperatures up to 420 K. Electrical domain writing and erasing are also possible using a scanning probe tip on the surface of SrTiO₃ crystals. This observation indicates that the role of the electrical response of SrTiO₃ needs to be revisited in the systems where signature of ferroelectricity/piezoelectricity has been previously observed with SrTiO₃ as a substrate/base material.},
doi = {10.1063/1.4895484},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 10,
volume = 116,
place = {United States},
year = {2014},
month = {9}
}