Influence of Sintering Temperature on Microstructure and Electrical Properties of La{sub 0.67}Ba{sub 0.33}MnO{sub 3} Ceramic

Journal Article · Wed Jul 07 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3469734· OSTI ID:21410554

Ng, S W; Lim, K P; Halim, S A; Chen, S K; Wong, J K ^[1]

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1. Physics Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia)

In this study we report the effect of the sintering temperature of polycrystalline La{sub 0.67}Ba{sub 0.33}MnO{sub 3}(LBMO) manganites synthesized via solid state reaction method. LBMO have been sintered at 900 to 1200 deg. C in intervals of 100 deg. C. X-ray diffraction spectrum confirms that LBMO phase formation starts at 900 deg. C accompany by a minor second phase of BaMnO{sub 3} and fully forms into single phase of LBMO at 1200 degree sign C. SEM images showed that, the grain size increased with sintering temperature and leading to densifications or lower porosity. The T{sub p} was not affected by the sintering temperature. However, the electrical resistances of samples were decreased with the sintering temperature. At higher sintering temperature, due to grain growth and reduction of insulating BaMnO{sub 3} phase, the intergrain connectivity has been improved and the resistance drops.

• OSTI ID: 21410554
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1250; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CERAMICS
CHEMICAL REACTIONS
COHERENT SCATTERING
CRYSTALS
DIELECTRIC MATERIALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
FABRICATION
FERROELECTRIC MATERIALS
GRAIN GROWTH
GRAIN SIZE
IMAGES
LANTHANUM COMPOUNDS
MANGANATES
MANGANESE COMPOUNDS
MATERIALS
MICROSCOPY
MICROSTRUCTURE
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLYCRYSTALS
POROSITY
RARE EARTH COMPOUNDS
REDUCTION
SCANNING ELECTRON MICROSCOPY
SCATTERING
SINTERING
SIZE
SOLIDS
SPECTRA
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION