Journal
JOURNAL OF APPLIED PHYSICS
Volume 115, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4866327
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Funding
- National Natural Science Foundation of China [11204147, 61164006, 60837003, 50777065, 61001041, 11090332]
- Science and Technology Commission of Shanghai Municipality [10520712700, 10JC1415900, 10dz0583400]
- Innovation Fund of Shanghai Institute of Ceramics [O99ZC4140G, O99ZC1110G]
- Shanghai Rising-Star Program [11QA1407500]
- Zhejiang and Ningbo Natural Science Foundation [LY13A040002, 2013A610130]
- Qianjiang River Talents Program of Zhejiang Province [2010R10027]
- Ningbo University of technology, China
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We investigated the pyroelectric properties of < 001 >, < 110 >, and < 111 >-oriented Mn doped 94.6Na(0.5)Bi(0.5)TiO(3)-5.4BaTiO(3) (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 degrees C, the values of p, F-v, and F-d reach as high as 5.88 x 10(-4) C/m(2) K, 29.8 mu Pa-1/2, and 0.08 m(2)/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. (C) 2014 AIP Publishing LLC.
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