Low-Temperature Structural Transitions in the Phonon-Glass Thermoelectric Material β-Zn4Sb3: Ordering of Zn Interstitials and Defects
Source abstract
Abstract
The low-temperature phase transitions of thermoelectric Zn 4 Sb 3 have been characterized using single-crystal X-ray diffraction, electrical resistance, and thermal conductivity measurements. Room-temperature stable, disordered β-Zn 4 Sb 3 undergoes a phase transition at 254 K to ordered α-Zn 4 Sb 3, which has an ideal composition Zn 13 Sb 10 . Below 235 K, a second low-temperature phase (α‘-Zn 4 Sb 3 ) can be detected. The sequence of phase transitions β−α−α‘ is reversible. The α−α‘ transformation originates from a slight Zn deficiency with respect to Zn 13 Sb 10 . The actual composition of Zn 4 Sb 3 is Zn 13 - δ Sb 10 .
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Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Thermal properties of materials · Thermal Radiation and Cooling Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Inorganic Chemistry, Stockholm University, SE-10691 Stockholm, Sweden, Solid State Physics, IMIT, Royal Institute of Technology, KTH Electrum 229, SE-16440 Kista, Sweden, Department of Chemistry, University of Aarhus, DK-8000 Aarhus, Denmark, School of Materials, Arizona State University, P.O. Box 876006, Tempe, Arizona 85287-6006 and Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604 Tempe, Arizona 85287-1604
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