In:
Applied Physics Letters, AIP Publishing, Vol. 106, No. 15 ( 2015-04-13)
Abstract:
A zero thermal expansion in a wide temperature range including room temperature has been achieved in a cubic perovskite oxide SrCu3Fe4−xMnxO12 for x = 1.5. Partial substitution of Mn for Fe in SrCu3Fe4O12 systematically changes the linear thermal expansion coefficient from negative [−6.4(2), −5.7(5), and −1.88(11) ppm/K for x = 0.5, 1, and 1.25, respectively] to almost zero [0.67(15) ppm/K for x = 1.5] to positive [2.97(17) ppm/K for x = 1.75] and the operational temperature window shifts to higher temperature ranges above room temperature. Crystal structure analysis and Mössbauer spectroscopy reveal that the zero thermal expansion for x = 1.5 composition is induced by intermetallic charge transfer between Cu and (Fe,Mn) ions. These results display the high potential of SrCu3Fe4−xMnxO12 for the development of zero thermal expansion materials.
Type of Medium:
Online Resource
ISSN:
0003-6951
,
1077-3118
Language:
English
Publisher:
AIP Publishing
Publication Date:
2015
detail.hit.zdb_id:
211245-0
detail.hit.zdb_id:
1469436-0
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