| Autor: |
Renbing Sun, Jinzhi Wang, Fang Wang, Tangfu Feng, Yanlong Li, Zhenhua Chi, Xiangyong Zhao, Haosu Luo |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 2014, Vol. 115 Issue 7, p1-4, 4p, 1 Chart, 4 Graphs |
| Abstrakt: |
We investigated the pyroelectric properties of <001>, <110>, and <111>-oriented Mn doped 94.6Na0.5Bi0.5TiO3-5.4BaTiO3 (94.6NBT-5.4BT) crystals. Among the above three crystallographic orientations, the <111>-oriented crystals possess the highest pyroelectric coefficients and the largest figures of merit. At 20 °C, the values of p, Fv, and Fd reach as high as 5.88 x 10-4 °C/m² K, 29.8 µPa-1/2, and 0.08 m²/C for <111>-oriented crystals, respectively, which are superior to other lead-free ferroelectric materials. The crystals also demonstrate a high depolarization temperature and relatively stable thermal pyroelectric property. These results indicate the potential of Mn-doped 94.6NBT-5.4BT crystals for lead-free infrared pyroelectric detectors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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