Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared via bulk mechanical alloying and hot pressing

J. Yang, T. Aizawa, A. Yamamoto, T. Ohta

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

In the present paper, starting from elemental Bi, Sb and Te granules with 5 N purity and 1-5 mm diameter, p-type single phase (Bi2Te3)x(Sb2Te3)1-x (x=0.20, 0.225, 0.25, 0.275 and 0.30) thermoelectric materials with high densification (>99% theoretical density) were prepared via bulk mechanical alloying (BMA) and hot pressing (HP). Their thermoelectric properties, are less composition sensitive in the composition range of x≤0.25 and are comparable to that of those materials prepared by travelling heater method (THM); the figures of merit of (Bi2Te3)x(Sb2Te3)1-x are about 3×10-3/K. When x>0.25, the figures of merit of (Bi2Te3)x(Sb2Te3)1-x decreased rapidly with increasing x.

Original languageEnglish
Pages (from-to)225-228
Number of pages4
JournalJournal of Alloys and Compounds
Volume309
Issue number1-2
DOIs
Publication statusPublished - 2000 Sep 14
Externally publishedYes

Fingerprint

Mechanical alloying
Hot pressing
Chemical analysis
Densification

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared via bulk mechanical alloying and hot pressing. / Yang, J.; Aizawa, T.; Yamamoto, A.; Ohta, T.

In: Journal of Alloys and Compounds, Vol. 309, No. 1-2, 14.09.2000, p. 225-228.

Research output: Contribution to journalArticle

Yang, J. ; Aizawa, T. ; Yamamoto, A. ; Ohta, T. / Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared via bulk mechanical alloying and hot pressing. In: Journal of Alloys and Compounds. 2000 ; Vol. 309, No. 1-2. pp. 225-228.
@article{80a8f77957cf463aa82a0064b20792a5,
title = "Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared via bulk mechanical alloying and hot pressing",
abstract = "In the present paper, starting from elemental Bi, Sb and Te granules with 5 N purity and 1-5 mm diameter, p-type single phase (Bi2Te3)x(Sb2Te3)1-x (x=0.20, 0.225, 0.25, 0.275 and 0.30) thermoelectric materials with high densification (>99{\%} theoretical density) were prepared via bulk mechanical alloying (BMA) and hot pressing (HP). Their thermoelectric properties, are less composition sensitive in the composition range of x≤0.25 and are comparable to that of those materials prepared by travelling heater method (THM); the figures of merit of (Bi2Te3)x(Sb2Te3)1-x are about 3×10-3/K. When x>0.25, the figures of merit of (Bi2Te3)x(Sb2Te3)1-x decreased rapidly with increasing x.",
author = "J. Yang and T. Aizawa and A. Yamamoto and T. Ohta",
year = "2000",
month = "9",
day = "14",
doi = "10.1016/S0925-8388(00)01063-X",
language = "English",
volume = "309",
pages = "225--228",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Thermoelectric properties of p-type (Bi2Te3)x(Sb2Te3)1-x prepared via bulk mechanical alloying and hot pressing

AU - Yang, J.

AU - Aizawa, T.

AU - Yamamoto, A.

AU - Ohta, T.

PY - 2000/9/14

Y1 - 2000/9/14

N2 - In the present paper, starting from elemental Bi, Sb and Te granules with 5 N purity and 1-5 mm diameter, p-type single phase (Bi2Te3)x(Sb2Te3)1-x (x=0.20, 0.225, 0.25, 0.275 and 0.30) thermoelectric materials with high densification (>99% theoretical density) were prepared via bulk mechanical alloying (BMA) and hot pressing (HP). Their thermoelectric properties, are less composition sensitive in the composition range of x≤0.25 and are comparable to that of those materials prepared by travelling heater method (THM); the figures of merit of (Bi2Te3)x(Sb2Te3)1-x are about 3×10-3/K. When x>0.25, the figures of merit of (Bi2Te3)x(Sb2Te3)1-x decreased rapidly with increasing x.

AB - In the present paper, starting from elemental Bi, Sb and Te granules with 5 N purity and 1-5 mm diameter, p-type single phase (Bi2Te3)x(Sb2Te3)1-x (x=0.20, 0.225, 0.25, 0.275 and 0.30) thermoelectric materials with high densification (>99% theoretical density) were prepared via bulk mechanical alloying (BMA) and hot pressing (HP). Their thermoelectric properties, are less composition sensitive in the composition range of x≤0.25 and are comparable to that of those materials prepared by travelling heater method (THM); the figures of merit of (Bi2Te3)x(Sb2Te3)1-x are about 3×10-3/K. When x>0.25, the figures of merit of (Bi2Te3)x(Sb2Te3)1-x decreased rapidly with increasing x.

UR - http://www.scopus.com/inward/record.url?scp=0034274430&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034274430&partnerID=8YFLogxK

U2 - 10.1016/S0925-8388(00)01063-X

DO - 10.1016/S0925-8388(00)01063-X

M3 - Article

AN - SCOPUS:0034274430

VL - 309

SP - 225

EP - 228

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -