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https://doi.org/10.1016/j.matlet.2004.04.029
Title: | Pulsed laser deposition and characterization of Bi3.25Nd 0.75Ti3O12 thin films buffered with La 0.7Sr0.3MnO3 electrode | Authors: | Yan, L. Kong, L.B. Ong, C.K. |
Keywords: | Ferroelectric materials Pulsed laser deposition Thin films |
Issue Date: | Sep-2004 | Citation: | Yan, L., Kong, L.B., Ong, C.K. (2004-09). Pulsed laser deposition and characterization of Bi3.25Nd 0.75Ti3O12 thin films buffered with La 0.7Sr0.3MnO3 electrode. Materials Letters 58 (24) : 2953-2957. ScholarBank@NUS Repository. https://doi.org/10.1016/j.matlet.2004.04.029 | Abstract: | Bi3.25Nd0.75Ti3O12 (BNT) ferroelectric thin films with a thickness of ∼0.5 μm, on substrates of Pt/Ti/SiO2/Si, (100) SrTiO3 and (100) MgO, with a 0.4-μm-thick La0.7Sr0.3MnO3 (LSMO) layer as bottom electrode, were deposited via pulsed laser deposition. The multilayer thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrical measurement. The LSMO layers on Pt/Ti/SiO 2/Si were polycrystalline, while those on SrTiO3 and MgO single crystal substrates were highly c-oriented. The BNT films were polycrystalline on LSMO covered Pt/Ti/SiO2/Si and MgO, and c-axis oriented on LSMO/SrTiO3. Dielectric constant and loss tangent (at 1 kHz) of the BNT thin films on LSMO buffered Pt/Ti/SiO2/Si, STO and MgO substrates were 224, 263 and 204, and 0.03, 0.04 and 0.05, respectively. They had a remnant polarization of 25.4, 29.5 and 19.1 μC/cm2, and a coercive field of 133, 176, 134 kV/cm, respectively. No fatigue was found for all the three BNT thin films up to 3×1010 switching cycles. © 2004 Elsevier B.V. All rights reserved. | Source Title: | Materials Letters | URI: | http://scholarbank.nus.edu.sg/handle/10635/115892 | ISSN: | 0167577X | DOI: | 10.1016/j.matlet.2004.04.029 |
Appears in Collections: | Staff Publications |
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