Evidence for the suppression of intermediate anti-ferroelectric ordering and observation of hardening mechanism in Na{sub 1/2}Bi{sub 1/2}TiO{sub 3} ceramics through cobalt substitution

Journal Article · Wed Jan 15 00:00:00 EST 2014 · AIP Advances

DOI:https://doi.org/10.1063/1.4862169· OSTI ID:22251701

Thangavelu, Karthik ^[1]; Ramadurai, Ranjith ^[2]; Asthana, Saket ^[1]

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1. Advanced Functional Materials Laboratory, Department of Physics, Indian Institute of Technology Hyderabad, Andhra Pradesh - 502 205, India. (India)
2. Department of Materials Science and Engineering, Indian Institute of Technology Hyderabad, Andhra Pradesh - 502 205, India. (India)

Co-ion (5 mol %) substitution in Na{sub 1/2}Bi{sub 1/2}TiO{sub 3} (NBT) host lattice and their effects on the structural, ferroelectric and dielectric behavior has been investigated thoroughly in this present study. The substituted Co-ion at Ti-site acts an acceptor type doping and hardens (i.e., increase in coercivity) the system without any noticeable change in the remanent polarization values. However, the intermediate antiferroelectric (AFE) ordering which exists between 200 °C–280 °C in NBT system has been suppressed due to Co-ion substitution, which is an interesting feature for device applications.

• OSTI ID: 22251701
• Journal Information: AIP Advances, Vol. 4, Issue 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
COBALT
COBALT IONS
COERCIVE FORCE
EQUIPMENT
FERROELECTRIC MATERIALS
HARDENING
INHIBITION
POLARIZATION