SEM and Auger studies of a PLZT thin film

1993 ◽  
Vol 8 (2) ◽  
pp. 245-248 ◽  
Author(s):  
Kwangsoo No ◽  
Dae Sung Yoon ◽  
Jae Myung Kim
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Energy Shift ◽  
Lead Lanthanum Zirconate Titanate ◽  
Cross Sectional ◽  
Lanthanum Zirconate ◽  
Lower Oxygen ◽  
Auger Spectra ◽  
Plzt Thin Film ◽  
Two Phases

The microstructure and the composition profile of lead lanthanum zirconate titanate thin film fabricated using the sol-gel method were analyzed using the scanning electron microscope and scanning Auger microscope. The PLZT thin film consists of micron-scale spheroidal perovskite grains and nano-scale pyrochlore grains. The perovskite grain has a higher lead and lower oxygen and zirconium contents than the pyrochlore grain. The Auger spectra of the two phases were similar except for energy shift and extra fine structure of oxygen peaks. The Auger depth profile and SEM observation of the cross-sectional fracture surface showed higher perovskite content near the interface between PLZT and ITO films than the surface of the PLZT film.

Sol-Gel Transparent PLZT Ferroelectric Ceramics

2006 ◽  
Vol 45 ◽  
pp. 2489-2494 ◽  
Author(s):  
M. Płońska ◽  
Wojciech A. Pisarski ◽  
Zbigniew Pędzich ◽  
Zygmunt Surowiak
Keyword(s):  
Infrared Spectroscopy ◽  
Mercury Porosimetry ◽  
Sol Gel ◽  
Ferroelectric Ceramics ◽  
Ceramic Powders ◽  
Lead Lanthanum Zirconate Titanate ◽  
Lanthanum Zirconate ◽  
Pressing Method ◽  
Fine Grained ◽  
To Receive

Lead lanthanum zirconate titanate (known as PLZT) ceramic powders have been prepared by the modified sol – gel method, and underwent consolidation by the hot uniaxial pressing method. Application of such technique of preparation permitted to receive fine-grained transparent PLZT x/65/35 ceramics, with x = 8 -10 La at.%. The present publication gives a detailed account of the relationships between technology and physical properties of obtained materials. To analyze all ceramics SEM, EDS and mercury porosimetry were performed, and dielectric properties were studied too. Quite wide light transparency from the visible to nearinfrared range for PLZT ceramics was detected using optical absorption and infrared spectroscopy.

Epitaxial growth of sol-gel PLZT thin films

1994 ◽  
Vol 9 (2) ◽  
pp. 420-425 ◽  
Author(s):  
Dae Sung Yoon ◽  
Chang Jung Kim ◽  
Joon Sung Lee ◽  
Won Jong Lee ◽  
Kwangsoo No
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Lead Lanthanum Zirconate Titanate ◽  
Lanthanum Zirconate ◽  
Heat Treated ◽  
Pole Figures ◽  
Insertion Method ◽  
Plzt Thin Films ◽  
Organic Solutions

Epitaxial lead lanthanum zirconate titanate [PLZT(9/50/50)] thin films were fabricated on various single crystal substrates using the spin coating of metallo-organic solutions. The films were heat-treated at 700 °C for 1 h using the direct insertion method. The films were epitaxially grown with (100), (100), and (110) being parallel to the SrTiO3(100), the MgO(100), and the sapphire (0112) substrates, respectively. The epitaxy of the films was investigated using x-ray diffraction, pole figures, rocking curves, and scanning electron microscopy.

Characterization of Plzt on Platinum Electrodes for High Density Fram Application

1996 ◽  
Vol 446 ◽  
Author(s):  
YongSoo Choi ◽  
SooDoo Choe ◽  
SeungHyun Kim ◽  
ChangEun Kim ◽  
DooYoung Yang
Keyword(s):  
Thin Film ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Stable State ◽  
Chelating Agent ◽  
Platinum Electrodes ◽  
Grain Sizes ◽  
Plzt Thin Film ◽  
La Doped

AbstractA new sol‐gel route to obtain PLZT thin film was developed by combining the advantage of 2‐methoxyethanol as a solvent and acetylacetone as a chelating agent. The sol maintained the same stable state as that of fresh synthesized sol even after 60 days of aging. The PLZT films spin coated onto a Pt/Ti/SiO2 substrate with 15% Pb excess and 7.5% La added sol showed well developed rosette microstructure of uniform grain sizes(0.3 ‐ 0.5 μm) and gave well behaved ferroelectric properties with the values of Ps, Pr, and Ec of 40 μC/cm2, 15 μ C/cm2, and 20 kV/cm respectively at 5V after 650 °C and above annealing. The degradation in polarization of 2.5% La doped PLZT thin film was found to be less than 20% up to 1012 cycles

Deposition of sol-gel derived lead lanthanum zirconate titanate thin films on copper substrates

2008 ◽  
Vol 92 (25) ◽  
pp. 252905 ◽  
Author(s):  
M. Narayanan ◽  
D.-K. Kwon ◽  
B. Ma ◽  
U. Balachandran
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Lead Lanthanum Zirconate Titanate ◽  
Lanthanum Zirconate ◽  
Zirconate Titanate

Growth and Structural Properties of ZnO-SWCNTs Produced by Chemical Bath Deposition and Sol-Gel Methods

2014 ◽  
Vol 895 ◽  
pp. 460-473 ◽  
Author(s):  
Azimah Omar ◽  
Abdullah Huda ◽  
M.R. Razali ◽  
S. Shaari ◽  
M.R. Taha
Keyword(s):  
Thin Film ◽  
Electron Microscopy ◽  
Thin Films ◽  
Carbon Nanotubes ◽  
Zinc Oxide ◽  
Chemical Bath Deposition ◽  
Low Cost ◽  
Sol Gel ◽  
Cross Sectional ◽  
Crystallite Sizes

Two different methods were used to synthesize and fabricate zinc oxide-carbon nanotubes (ZnO-CNTs) thin films; chemical bath deposition (CBD) and sol-gel method. Single-walled carbon nanotubes (SWCNTs) were implemented in preparing the thin films. The obtained thin films were annealed in air at different temperatures levels of 200 °C, 250 °C, 300 °C and 350 °C for 30 min. Both methods successfully grew various nanostructures of ZnO-CNTs such as nanoparticles, nanobranches and nanoflakes. The synthesized nanostructures were characterized by using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The crystallite sizes were calculated between 38.54 nm and 6.13 nm. FESEM cross sectional images indicated the thin film thicknesses varied from 164.9 μm to 5.84 μm. The TEM images estimated the diameters of the SWCNTs in the range of 3.38 nm to 16.14 nm. TEM images also proved the presence of ZnO entangled between SWCNTs. A combination of ZnO and SWCNTs in the thin film proposes a simple and low cost CBD method to produce various ZnO-CNTs nanostructures with appropriate thickness. Keywords: zinc oxide; carbon nanotubes; nanostructures; thin film ABSTRAK Dua kaedah telah digunakan untuk mensintesiskan serta memfabrikasi filem nipis zink oksida-karbon nanotiub (ZnO-CNTs); kaedah pemendapan kubang kimia (CBD) dan sol-gel. Karbon-nanotiub berdinding satu (SWCNTs) telah digunakan dalam penyediaan filem nipis. Filem nipis yang diperolehi disepuh-lindap melalui udara pada tahap suhu yang berbeza dari 200 °C, 250 °C, 300 °C dan 350 °C selama 30 minit. Kedua-dua kaedah telah berjaya menumbuhkan pelbagai struktur nanoZnO-CNTs seperti nanozarah, nanodahan dan nanokepingan. Pencirian struktur nanoitu dilakukan menggunakan mikroskop elektron imbasan (FESEM), belauan sinar-X (XRD) dan mikroskop electron pancaran (TEM). Saiz kristal yang dikira adalah antara 38.54 nm dan 6.13 nm. Analisis bagi keratan rentas FESEM imej menunjukkan ketebalan filem yang pelbagai dari 164.9 μm sehingga 5.84 μm. Imej TEM menganggarkan diameter karbon nanotiub dalam julat 3.38 nm sehingga 16.14 nm. Imej TEM turut mengesahkan kewujudan ZnO yang melekat di antara CNTs. Kombinasi ZnO dan SWCNTs di dalam filem nipis mencadangkan penggunaan kaedah CBD yang ringkas dan berkos murah untuk menghasilkan pelbagai struktur ZnO-CNTs bersaiz nanodengan ketebalan yang sesuai. Kata-kata kunci: zink oksida; karbon nanotiub; struktur bersaiz nano; filem nipis

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