Low-temperature structural transitions in the phonon-glass thermoelectric material β-Zn4Sb3:: Ordering of Zn interstitials and defects

被引：89

作者：

Nylen, Johanna

Lidin, Sven

Andersson, Magnus

Iversen, Bo Brummerstedt

Liu, Hongxue

Newman, Nate

Haussermann, Ulrich

机构：

[1] Arizona State Univ, Sch Mat, Tempe, AZ 85287 USA

[2] Aarhus Univ, Dept Chem, DK-8000 Aarhus, Denmark

[3] KTH Electrum, Royal Inst Technol, IMIT, SE-16440 Kista, Sweden

[4] Univ Stockholm, SE-10691 Stockholm, Sweden

[5] Arizona State Univ, Dept Chem & Biochem, Tempe, AZ 85287 USA

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 04期

关键词：

D O I：

10.1021/cm062384j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The low-temperature phase transitions of thermoelectric Zn4Sb3 have been characterized using single-crystal X-ray diffraction, electrical resistance, and thermal conductivity measurements. Room-temperature stable, disordered beta-Zn4Sb3 undergoes a phase transition at 254 K to ordered alpha-Zn4Sb3, which has an ideal composition Zn13Sb10. Below 235 K, a second low-temperature phase (alpha'-Zn4Sb3) can be detected. The sequence of phase transitions beta-alpha-alpha' is reversible. The alpha-alpha' transformation originates from a slight Zn deficiency with respect to Zn13Sb10. The actual composition of Zn4Sb3 is Zn13-delta Sb10.

引用

页码：834 / 838

页数：5

共 21 条

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