Aging rate of cerium doped Ba(Ti 0.99 Mn 0.01 )O 3
Ceramics International, ISSN: 0272-8842, Vol: 43, Page: S70-S74
2017
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- 7Captures
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Article Description
In the present study, Ce-doped Ba(Ti 0.99 Mn 0.01 )O 3 (BT-1Mn-xCe, x= 2, 5, 8, 10 mol%) lead-free ceramics were prepared by using the conventional solid state method. The morphologies, phase structures, dielectric properties and aging behaviors of the Ce-doped Ba(Ti 0.99 Mn 0.01 Ce)O 3 samples were investigated to reveal the effects of cerium doping on their aging behaviors. The results show that all the samples have a single perovskite structure. With the cerium content increasing, the two transition temperatures (the Curie temperature T C and the tetragonal to orthorhombic structural transition temperature T 1 ) gradually merged into one. Moreover, the dielectric permittivity shows a broad and diffuse peak with the cerium content increasing. The measurement of polarization-electric field (P-E) hysteresis loops shows a more and more obvious constricted tendency with the aging time increasing. For BT-1Mn-2Ce sample, the aging is fast and then slows down to a stable condition. While for x≥5 mol% samples, the aging is slow and then fast and does not reach a stable condition during the measured time. The relation between the aging rate and crystal structure was discussed. This may help us on controlling the aging behavior of other lead-free ferroelectric ceramics.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0272884217310398; http://dx.doi.org/10.1016/j.ceramint.2017.05.218; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85019969337&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0272884217310398; https://dx.doi.org/10.1016/j.ceramint.2017.05.218
Elsevier BV
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