Phase, Dielectric and Ferroelectric Properties of Microwave Sintered La and Ca Modified BaTiO{sub 3} Ceramics

Journal Article · Tue Nov 22 04:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3644418· OSTI ID:21608501

Sonia, S; Patel, R K ^[1]; Kumar, P ^[2]; Prakash, Chandra ^[3]; Agrawal, D K ^[4]

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1. Department of Chemistry, National Institute of Technology, Rourkela - 769008 (India)
2. Department of Physics, National Institute of Technology, Rourkela - 769008 (India)
3. Directorate of IE and IPR, DRDO, DRDO Bhawan, New Delhi-110105 (India)
4. Materials Research Laboratory, Pennsylvania State University, University Park, PA 16802 (United States)

Lanthanum and calcium modified barium titanate, Ba{sub (1-x)}La{sub x}Ti{sub (1-x/4)}O{sub 3}/BLT and Ba({sub 1-x})Ca{sub x}TiO{sub 3}/BCT, where x = 0.02, ferroelectric ceramic samples were synthesized in single perovskite phase by microwave processing technique. Sintering temperature was optimized at 1100 deg. C for 1h. Presence of pore free micron size uniform grains suggested the advantage of using microwave sintering process. Transition temperature (T{sub c}) decreases with the substitution of La content in BT system. Temperature coefficient of capacitance is negligible from RT temperature to 75 deg. C for BLT ceramic samples. Polarization vs. electric field (P-E) hysteresis loop study confirms the ferroelectric nature of the modified BT ceramic samples.

• OSTI ID: 21608501
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1372; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CAPACITANCE
CERAMICS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIELECTRIC MATERIALS
ELECTRIC FIELDS
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
FABRICATION
FERROELECTRIC MATERIALS
HYSTERESIS
LANTHANUM COMPOUNDS
MATERIALS
MICROWAVE RADIATION
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
POLARIZATION
RADIATIONS
RARE EARTH COMPOUNDS
REACTIVITY COEFFICIENTS
SINTERING
TEMPERATURE COEFFICIENT
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE