Title

Pyroelectric properties of Mn-doped Aurivillius ceramics with different pseudo-perovskite layers

RIS ID

117723

Publication Details

Tang, Y., Shen, Z., Zhao, X., Wang, F., Shi, W., Sun, D., Zhou, Z. & Zhang, S. (2018). Pyroelectric properties of Mn-doped Aurivillius ceramics with different pseudo-perovskite layers. Journal of the American Ceramic Society, 101 (4), 1592-1597.

Abstract

The pyroelectric properties of Mn-doped Aurivillius ceramics with different pseudo-perovskite layers were investigated. The pyroelectric coefficients for 0.2 wt% Mn-doped two-layer CaBi 2 Nb 2 O 9 (CBN-Mn), three-layer Bi 4 Ti 2.85 Nb 0.15 O 12 (BTN-Mn), and four-layer CaBi 4 Ti 3.95 Nb 0.05 O 15 (CBTN-Mn) ferroelectric ceramics were found to be on the order of 26.0, 54.4, 84.4 μC/m 2 K at room temperature, respectively. These values were closely associated with the number of octahedral layers in the pseudo-perovskite blocks. The high pyroelectric coefficient, together with low dielectric permittivity and loss (tan δ < 0.003), results in to high figures of merit for the current responsivity, voltage responsivity, and detectivity. The excellent pyroelectric properties and high Curie temperatures (T C > 660°C) make the Aurivillius ceramics potential candidates for pyroelectric devices over a broad temperature range.

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Link to publisher version (DOI)

http://dx.doi.org/10.1111/jace.15267