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Controllable thermal expansion properties of In 2 − x Cr x Mo 3 O 12
Author(s) -
Wu M. M.,
Zu Y.,
Peng J.,
Liu R. D.,
Hu Z. B.,
Liu Y. T.,
Chen D. F.
Publication year - 2012
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201200080
Subject(s) - monoclinic crystal system , orthorhombic crystal system , thermal expansion , negative thermal expansion , crystallography , solid solution , crystal structure , materials science , diffraction , thermal , x ray crystallography , solid state , chemistry , thermodynamics , physics , metallurgy , optics
Solid solutions In 2 − x Cr x Mo 3 O 12 have been prepared via the solid state reaction method. The structural and thermal expansion properties have been characterized using X‐ray diffraction. All compounds exhibit monoclinic structure with space group P2 1 /a at room temperature, and transform to orthorhombic structure at higher temperature. Compounds In 2 − x Cr x Mo 3 O 12 ( x = 0.7, 1.0 and 1.3) possess strong positive thermal expansion in the monoclinic structure, while their thermal expansion coefficients of orthorhombic structure vary from negative to positive with increasing Cr content. It is worthwhile to note that In 1.3 Cr 0.7 Mo 3 O 12 and InCrMo 3 O 12 have near zero thermal expansion properties.