Suppression of temperature hysteresis in negative thermal expansion compound BiNi1-xFexO3 and zero-thermal expansion composite

K. Nabetani, Y. Muramatsu, K. Oka, K. Nakano, H. Hojo, M. Mizumaki, A. Agui, Y. Higo, N. Hayashi, M. Takano, M. Azuma

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Negative thermal expansion (NTE) of BiNi1-xFexO3 is investigated. All x=0.05, 0.075, 0.10, and 0.15 samples shows large NTE with the coefficient of linear thermal expansion (CTE) αL exceeding -150ppm K-1 induced by charge transfer between Bi5+ and Ni2+ in the controlled temperature range near room temperature. Compared with Bi1-xLnxNiO3 (Ln: rare-earth elements), the thermal hysteresis that causes a problem for practical application is suppressed because random distribution of Fe in the Ni site changes the first order transition to second order-like transition. The CTE of BiNi0.85Fe0.15O3 reaches -187ppm K-1 and it is demonstrated that 18 vol. % addition of the present compound compensates for the thermal expansion of epoxy resin.

Original languageEnglish
Article number061912
JournalApplied Physics Letters
Issue number6
Publication statusPublished - Feb 9 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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