Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5461455 | Journal of Alloys and Compounds | 2017 | 12 Pages |
Abstract
Ferroelectric single crystals Mn-doped 0.29Pb(In1/2Nb1/2)O3-0.31Pb(Mg1/3Nb2/3)O3-0.40PbTiO3 (Mn-PIMNT) have been grown by a modified Bridgman technique. The as-grown ternary tetragonal Mn-PIMNT (29/31/40) single crystals exhibit ultra-high Curie temperature TC of 216 °C, 110 °C higher than that of Mn-PMNT(72/28) single crystals(Td â¼Â 105 °C). In addition, the permittivity εr of tetragonal Mn-PIMNT(29/31/40) is 350 at 1 kHz, approximately less than that of Mn-PMNT(72/28)(εr â¼Â 640) in half. Moreover, as a core parameter of pyroelectric material, the figure of merits for detectivity (Fd) for Mn-PIMNT(29/31/40) is 23.5 Ã 10â5Paâ1/2, close to that of Mn-PMNT(72/28)(Fd â¼Â 28.5). Finally, outstanding Mn-PIMNT(29/31/40) based pyroelectric detectors were fabricated, of which the specific detectivity (D*) (room temperature, 10 Hz) is up to 1.74 Ã 109 cmHz1/2/W for current-mode detectors, and 1.15 Ã 109 cmHz1/2/W for voltage-mode detectors, 3 times higher than that of commercial LiTaO3 based detectors. All of these results make these ternary tetragonal Mn-PIMNT single crystals a promising candidate for infrared detector applications.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Linrong Yang, Long Li, Xiangyong Zhao, Qing Xu, Jiashuai Ma, Sheng Wang, Xiaobing Li, Wenning Di, Haiqing Xu, Haosu Luo,