High room-temperature pyroelectric response of MgO-modified Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3 ceramics |
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| Institution: | 1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China;3. Laboratory for Shock Wave and Detonation Physics Research, Institute of Fluid Physics, CAEP, Mianyang 621900, China;1. Physics Department, College of Sciences, Shiraz University, Shiraz 71454, Iran;2. Faculty of Advanced Technologies, Shiraz University, Shiraz, Iran;1. Université François-Rabelais de Tours, GREMAN UMR 7347 CNRS, Tours, France;2. Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France;1. LSI/PSI/USP, University of Sao Paulo, Av. Prof. Luciano Gualberto, trav. 3, n. 158, 05508-010 Sao Paulo, Brazil;2. imec, Kapeldreef 75, B-3001 Leuven, Belgium;3. E.E. Department KU Leuven, Kasteelpark Arenberg 10, B-3001 Leuven, Belgium |
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| Abstract: | The dielectric and pyroelectric responses of MgO-modified Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3 ceramics were investigated near FR(LT)–FR(HT) phase transition. It was found that MgO additive reduced the FR(LT)–FR(HT) phase transition temperature from 41 °C to room temperature (24 °C). Superior room-temperature pyroelectric properties were obtained in the composition of 0.10 wt% MgO addition without DC bias. The largest pyroelectric coefficient, 65 × 10?8 C cm?2 K?1, was detected. Accordingly, the detectivity figures of merit Fd had maximum values of 20 × 10?5 Pa?1/2, and especially the voltage responsivity Fv = 0.91 m2C?1 is the highest value reported so far among all pyroelectric materials. It shows promising potential for application in uncooled pyroelectric infrared detector. |
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| Keywords: | PZT 95/5 Pyroelectric property MgO |
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