Published June 17, 2014 | Version v1
Journal article Metadata-only

Structure and temperature dependent electrical properties of lead-free Bi0.5Na0.5TiO3- SrZrO3 ceramics

Creators

  • 1. Engineering Research Center for Integrated Mechatronics Materials and Components, Changwon National University, Gyeongnam 641-773 (Korea, Republic of)
  • 2. Korea Electrotechnology Research Institute, Gyeongnam 641-773 (Korea, Republic of)

Description

Lead-free SrZrO3-modified Bi0.5Na0.5TiO3 (BNT-SZ) ceramics were fabricated by a conventional solid state reaction method. X-ray diffraction analysis reveals a pure perovskite phase without any traces of secondary phases. Scanning electron microscopy images depicts dense grain morphology. The temperature dependences of the dielectric behavior was measured in the temperature range of 50-500 °C at 100 kHz. With the increase in SZ content, the dielectric constant (εr) constantly decreased and the maximum dielectric constant temperature (Tm) shifted towards lower temperatures. In addition to this, ferroelectric hysteresis loops indicated a disruption of ferroelectric order and increase in the relaxor character of BNT ceramics with increase in SZ concentration. A maximum values of remnant polarization (32 μC/cm2) and piezoelectric constant (100 pC/N) were observed at SZ5 and SZ4, respectively

Availability note (English)

Available from http://dx.doi.org/10.1088/1757-899X/60/1/012047

Additional details

Identifiers

DOI
10.1088/1757-899X/60/1/012047;

Publishing Information

Journal Title
IOP Conference Series. Materials Science and Engineering (Online)
Journal Volume
60
Journal Issue
1
Journal Page Range
[9 p.]
ISSN
1757-899X

Conference

Title
International symposium on advanced materials
Acronym
ISAM 2013
Dates
23-27 Sep 2013
Place
Islamabad (Pakistan)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47067211
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CERAMICS; CONCENTRATION RATIO; FERROELECTRIC MATERIALS; KHZ RANGE; LEAD; PERMITTIVITY; PEROVSKITE; PIEZOELECTRICITY; POLARIZATION; SCANNING ELECTRON MICROSCOPY; SOLIDS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; DIELECTRIC MATERIALS; DIELECTRIC PROPERTIES; DIFFRACTION; DIMENSIONLESS NUMBERS; ELECTRICAL PROPERTIES; ELECTRICITY; ELECTRON MICROSCOPY; ELEMENTS; FREQUENCY RANGE; MATERIALS; METALS; MICROSCOPY; MINERALS; OXIDE MINERALS; PEROVSKITES; PHYSICAL PROPERTIES; SCATTERING