Cited 18 time in webofscience Cited 19 time in scopus

Fabrication and thermoelectric properties of crystal-aligned nano-structured Bi2Te3

Title
Fabrication and thermoelectric properties of crystal-aligned nano-structured Bi2Te3
Authors
Kim, Dong-HwanKim, ChamHa, Dong-WooKim, Hoyoung
DGIST Authors
Kim, Dong-HwanKim, ChamKim, Hoyoung
Issue Date
2011-04-28
Citation
Journal of Alloys and Compounds, 509(17), 5211-5215
Type
Article
Article Type
Article
Keywords
AlignmentCarrier ConcentrationCarrier MobilityCrystal AlignmentCrystalsElectric ConductivityElectric SparksElectrical ResistivityHigh Magnetic FieldHigh Magnetic FieldsMagnetic Field EffectsMagnetismNano-StructuredNano-StructuresNanostructureSintered BodySlip-Casting MethodSpark Plasma SinteringThermo-ElectricThermo-Electric PerformanceThermo-Electric Properties
ISSN
0925-8388
Abstract
With a view to experimental demonstration for an improved thermoelectric performance, a slip casting method under high magnetic field for uni-directionally aligned crystals has been investigated. The sintered body of Bi2Te3 powder, its size between 300 and 500 nm, green-bodied under 6 T magnetic field showed a 33% variation in the fraction of the directionally aligned crystals. According to increasing this fraction, electrical resistivity was reduced with keeping thermal conductivity and Seebeck coefficient unchanged. This could be explained from the fact that the aligned crystals by magnetic field has increased the carrier mobility keeping carrier concentration unchanged. © 2011 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/5393
DOI
10.1016/j.jallcom.2011.02.059
Publisher
Elsevier
Related Researcher
Files:
There are no files associated with this item.
Collection:
Magnet-Controlled Materials Research Group1. Journal Articles


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