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Anti-ferromagnetic BiFeO3/Bi3.15Nd0.85Ti3O12 (BFO/BNdT) multilayer films with remnant polarization of 22.1 ??C/cm2 have been fabricated by sol-gel method on Pt (100)/Ti/SiO2/Si (100) substrate. X-ray diffraction analysis indicates high (110) orientation and a relatively degree of (111) orientation in the multilayer achieved. The dielectric constant and the dissipation factor of the multilayer are...
BIT powder is prepared by hydrothermal synthesis. It is found that the formation of BIT powder is affected by KOH concentration because the XRD intensity increases with increasing the KOH concentration less than 2.0 M. The products are yellowish gray and consist of microscopic lamellar platelets of 0.5 -1.5 mum. Treatment tempereatures are 160 -240 deg C and is decreased with increasing the holding...
0.68BiFeO3-0.32PbTiO3 (BFPT) films were prepared on SiO2/Si and Pt/Ti/SiO2/Si substrates by sol-gel method. The XRD patterns of BFPT films show that BFPT films have good crystalline properties, and there are no other peaks of impure phases except for the peaks of BFPT thin film and the substrates. The thickness of BFPT thin films that annealed at 600? for 10 min was about 860 nm when deposited 8 layers...
Polycrystalline thin films of La-substituted bismuth titanate (BLT) have been formed directly on p-type Si(100) substrates by using sol-gel and spin-coat methods. The BLT film and interfacial layer between BLT and Si were quantitatively investigated by X-ray reflectivity method. Also, crystal orientations of sub-100 nm-thick BLT thin films have been confirmed by X-ray diffraction using synchrotron...
The ferroelectric properties of Bi4-xLaxTi3O12 (BLT) thin films deposited on Pt/Ti/SiO2/Si using sol-gel method have been studied. Their crystal structure, chemical composition and vibration modes were measured using x-ray thetas-2thetas scan, Electron probe micro-scope analyzer(EPMA), and Raman spectroscopy, respectively. Their orientations were domanantly (117) and (200). Various type of grains,...
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