1. INVESTIGATION OF LEAKAGE CURRENT BEHAVIOR OF Pt/Bi0.975La0.025Fe0.975Ni0.025O3/Pt CAPACITOR MEASURED AT DIFFERENT TEMPERATURES.
- Author
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XIU HONG DAI, HONG DONG ZHAO, LEI ZHANG, HUI JUAN ZHU, XIAO HONG LI, YA JUN ZHAO, JIAN XIN GUO, QING XUN ZHAO, YING LONG WANG, BAO TING LIU, and LIAN XI MA
- Subjects
STRAY currents ,CAPACITORS ,TEMPERATURE effect ,POLYCRYSTALS ,SOL-gel processes ,DOPING agents (Chemistry) - Abstract
Polycrystalline Bi
0.975 La0.025 Fe0.975 Ni0.025 O3 (BLFNO) film is fabricated on Pt/Ti/SiO2 /Si(111) substrate by sol-gel method. It is found that the well-crystallized BLFNO film is polycrystalline, and the Pt/BLFNO/Pt capacitor possesses good ferroelectric properties with remnant polarization of 74 μC/cm2 at electric field of 833 kV/cm. Moreover, it is also found measurement temperature ranging from 100 to 300 K. The leakage density of the Pt/BLFNO/Pt capacitor satisfies space-charge-limited conduction (SCLC) at that the leakage current density of the Pt/BLFNO/Pt capacitor increases with the increase of higher electric field and shows little dependence on voltage polarity and temperature, but shows polarity and temperature dependence at lower applied electric field. With temperature increasing from 100 to 300 K at lower applied electric field, the most likely conduction mechanism is from Ohmic behavior to SCLC for positive biases, but no clear dominant mechanism for negative biases is shown. [ABSTRACT FROM AUTHOR]- Published
- 2014
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