Local electromethanical properties of the CaCu3Ti 4O12 ceramics

Ronald Tararam; Igor Bdikin; José Arana Varela; Paulo Roberto Bueno; José Gracio; Andrei Kholkin

Local electromethanical properties of the CaCu₃Ti ₄O₁₂ ceramics

Ronald Tararam^*
, Igor Bdikin
, José Arana Varela
, Paulo Roberto Bueno
, José Gracio
, Andrei Kholkin

^*Corresponding author for this work

Universidade Estadual Paulista Júlio de Mesquita Filho
University of Aveiro

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research › peer-review

7 Citations (Scopus)

Abstract

Scanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu₃Ti₄O₁₂ (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO in both vertical (out-of-plane) and lateral (in-plane) modes and depended on the grain orientation varying in sign and amplitude. The piezoelectric contrast is shown to be controlled by the electrical bias (local poling) and displayed a ferroelectric-like reversible hysteresis accompanied with a change of the phase of piezoelectric signal. Flexoelectric effect (strain-gradient-induced polarization) due to surface relaxation was invoked to explain the observed contrast inside the grains.

Original language	English
Title of host publication	Structure-Function Relations at Perovskite Surfaces and Interfaces
Pages	6-10
Number of pages	5
Publication status	Published - 2010
Externally published	Yes
Event	2010 MRS Spring Meeting - San Francisco, CA, United States Duration: 5 Apr 2010 → 9 Apr 2010

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1255
ISSN (Print)	0272-9172

Conference

Conference	2010 MRS Spring Meeting
Country/Territory	United States
City	San Francisco, CA
Period	5/04/10 → 9/04/10

Cite this

@inproceedings{a53a3bd6d3d54944a702288a30fdd38e,

title = "Local electromethanical properties of the CaCu3Ti 4O12 ceramics",

abstract = "Scanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu3Ti4O12 (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO in both vertical (out-of-plane) and lateral (in-plane) modes and depended on the grain orientation varying in sign and amplitude. The piezoelectric contrast is shown to be controlled by the electrical bias (local poling) and displayed a ferroelectric-like reversible hysteresis accompanied with a change of the phase of piezoelectric signal. Flexoelectric effect (strain-gradient-induced polarization) due to surface relaxation was invoked to explain the observed contrast inside the grains.",

author = "Ronald Tararam and Igor Bdikin and Varela, \{Jos{\'e} Arana\} and Bueno, \{Paulo Roberto\} and Jos{\'e} Gracio and Andrei Kholkin",

year = "2010",

language = "English",

isbn = "9781617822193",

series = "Materials Research Society Symposium Proceedings",

pages = "6--10",

booktitle = "Structure-Function Relations at Perovskite Surfaces and Interfaces",

note = "2010 MRS Spring Meeting ; Conference date: 05-04-2010 Through 09-04-2010",

}

Local electromethanical properties of the CaCu₃Ti ₄O₁₂ ceramics. / Tararam, Ronald; Bdikin, Igor; Varela, José Arana et al.
Structure-Function Relations at Perovskite Surfaces and Interfaces. 2010. p. 6-10 (Materials Research Society Symposium Proceedings; Vol. 1255).

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › Research › peer-review

TY - GEN

T1 - Local electromethanical properties of the CaCu3Ti 4O12 ceramics

AU - Tararam, Ronald

AU - Bdikin, Igor

AU - Varela, José Arana

AU - Bueno, Paulo Roberto

AU - Gracio, José

AU - Kholkin, Andrei

PY - 2010

Y1 - 2010

N2 - Scanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu3Ti4O12 (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO in both vertical (out-of-plane) and lateral (in-plane) modes and depended on the grain orientation varying in sign and amplitude. The piezoelectric contrast is shown to be controlled by the electrical bias (local poling) and displayed a ferroelectric-like reversible hysteresis accompanied with a change of the phase of piezoelectric signal. Flexoelectric effect (strain-gradient-induced polarization) due to surface relaxation was invoked to explain the observed contrast inside the grains.

AB - Scanning probe microscopy (SPM) was used to probe piezoelectric vibrations and local conductivity in CaCu3Ti4O12 (CCTO) ceramics at room temperature. Piezoelectric contrast was observed on the polished surfaces of CCTO in both vertical (out-of-plane) and lateral (in-plane) modes and depended on the grain orientation varying in sign and amplitude. The piezoelectric contrast is shown to be controlled by the electrical bias (local poling) and displayed a ferroelectric-like reversible hysteresis accompanied with a change of the phase of piezoelectric signal. Flexoelectric effect (strain-gradient-induced polarization) due to surface relaxation was invoked to explain the observed contrast inside the grains.

UR - https://www.scopus.com/pages/publications/79952000954

M3 - Conference paper

AN - SCOPUS:79952000954

SN - 9781617822193

T3 - Materials Research Society Symposium Proceedings

SP - 6

EP - 10

BT - Structure-Function Relations at Perovskite Surfaces and Interfaces

T2 - 2010 MRS Spring Meeting

Y2 - 5 April 2010 through 9 April 2010

ER -

Local electromethanical properties of the CaCu₃Ti ₄O₁₂ ceramics

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