Structural And Electrical Properties oF (La{sub 0.5-x}Pr{sub x}Ba{sub 0.5})(Mn{sub 0.5}Ti{sub 0.5})O{sub 3} Perovskite

Journal Article · Tue Jan 05 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3295598· OSTI ID:21366880

Alias, Nor Hayati ^[1]; Shaari, Abdul Halim; Mahmood, Che Seman ^[1]

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1. Materials Technology Group, Malaysian Nuclear Agency, 43000, Kajang, Selangor Darul Ehsan (Malaysia)

A single phase monoclinic new perovskite based titano-manganite (La{sub 0.5-x}Pr{sub x}Ba{sub 0.5})(Mn{sub 0.5}Ti{sub 0.5})O{sub 3} has been successfully prepared by ceramic solid-state technique at sintering temperature of 1300 deg. C. The concentration of Pr (Praseodymium), x, in molar proportion in A site has been varied as x = 0, 0.02 and 0.2. Analysis has been carried out to determine the electrical properties of the synthesized material at frequency ranging from 5 Hz to 1 MHz; and at temperature range between 25 deg. C to 200 deg. C. It is found that Pr addition promoted liquid phase sintering diffusion, porosity and agglomeration formation at 1300 deg. C. Dual relaxation is observed in unsubstituted Pr sample x = 0 and high Pr substituted sample x = 0.2. This phenomenon was a combinational contribution from a quasi dc (QDC) or low frequency dispersion (LFD), two cole-cole relaxational responses and a resistor. While low concentrated Pr substituted sampled x = 0.02 shows a combinational contribution from a quasi dc (QDC) or low frequency dispersion (LFD), single cole-cole relaxational response and a resistor at room temperature. Pr substitution at x = 0(max 12000) and x = 0.2(max 16000) showed high dielectric values compared to low substituted sample x = 0.02. Variation of dielectric loss tangent (tan delta) are observed for all samples at temperature ranged studied.

• OSTI ID: 21366880
• Journal Information: AIP Conference Proceedings, Vol. 1202, Issue 1; Conference: International conference on neutron and X-ray scattering - 2009, Kuala Lumpur (Malaysia), 29 Jun - 1 Jul 2009; Other Information: DOI: 10.1063/1.3295598; (c) 2009 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGGLOMERATION
BARIUM COMPOUNDS
CERAMICS
DIELECTRIC MATERIALS
DIFFUSION
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
MANGANATES
MONOCLINIC LATTICES
PEROVSKITE
POROSITY
PRASEODYMIUM
PRASEODYMIUM COMPOUNDS
RESISTORS
SCANNING ELECTRON MICROSCOPY
SINTERING
TEMPERATURE RANGE 0273-0400 K
TITANATES
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRICAL EQUIPMENT
ELECTRON MICROSCOPY
ELEMENTS
EQUIPMENT
FABRICATION
MANGANESE COMPOUNDS
MATERIALS
METALS
MICROSCOPY
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
RARE EARTHS
SCATTERING
TEMPERATURE RANGE
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS