PREPARATION AND FERROELECTRIC PROPERTIES OF LEAD-FREE A0.5Bi0.5TiO3 (A = Na OR K) THIN FILMS
2011 ◽
Vol 18
(03n04)
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pp. 121-125
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Keyword(s):
Both ferroelectric Na0.5Bi0.5TiO3 (NBT) and K0.5Bi0.5TiO3 (KBT) are considered as the best known lead-free materials. In this experiment, we prepared NBT and KBT thin films on Pt/TiO2/SiO2/Si substrates by metalorganic solution deposition. The structural properties and surface morphologies were measured using X-ray diffraction and atomic force microscopy. The NBT and KBT films show higher leakage currents due to the oxygen vacancies in the films. The remanent polarization and coercive field of NBT (KBT) thin film are 9 (5.2) μC/cm2 and 50 (25) kV/cm at an applied electric field of 150 kV/cm. The relative dielectric constants of NBT and KBT are 340 and 316 at 1 MHz, respectively.
1998 ◽
Vol 13
(5)
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pp. 1318-1326
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Keyword(s):
2021 ◽
Vol 21
(4)
◽
pp. 2681-2686
2013 ◽
Vol 446-447
◽
pp. 306-311
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Keyword(s):
2006 ◽
Vol 306-308
◽
pp. 1295-1300