Synthesis, Structure, and Rigid Unit Mode-like Anisotropic Thermal Expansion of BaIr2In9

Nicholas P. Calta, Fei Han, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This Article reports the synthesis of large single crystals of BaIr2In9 using In flux and their characterization by variable-temperature single-crystal and synchrotron powder X-ray diffraction, resistivity, and magnetization measurements. The title compound adopts the BaFe2Al9-type structure in the space group P6/mmm with room temperature unit cell parameters a = 8.8548(6) Å and c = 4.2696(4) Å. BaIr2In9 exhibits anisotropic thermal expansion behavior with linear expansion along the c axis more than 3 times larger than expansion in the ab plane between 90 and 400 K. This anisotropic expansion originates from a rigid unit mode-like mechanism similar to the mechanism of zero and negative thermal expansion observed in many anomalous thermal expansion materials such as ZrW2O8 and ScF3. (Graph Presented).

Original languageEnglish
Pages (from-to)8794-8799
Number of pages6
JournalInorganic Chemistry
Volume54
Issue number17
DOIs
Publication statusPublished - Sep 8 2015

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Thermal expansion
thermal expansion
expansion
synthesis
Single crystals
single crystals
Synchrotrons
X ray powder diffraction
Magnetization
synchrotrons
Fluxes
Temperature
magnetization
electrical resistivity
room temperature
cells
diffraction
x rays
temperature
Negative thermal expansion

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry

Cite this

Synthesis, Structure, and Rigid Unit Mode-like Anisotropic Thermal Expansion of BaIr2In9. / Calta, Nicholas P.; Han, Fei; Kanatzidis, Mercouri G.

In: Inorganic Chemistry, Vol. 54, No. 17, 08.09.2015, p. 8794-8799.

Research output: Contribution to journalArticle

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