Open AccessОсобенности формирования и структуры ленгмюровских пленок титаната бария
Author(s) -
А.П. Кузьменко,
И.В. Чухаева,
П.В. Абакумов
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2019.08.47898.2454
Subject(s) - barium titanate , materials science , x ray photoelectron spectroscopy , scanning electron microscope , dynamic light scattering , colloid , scattering , ferroelectricity , analytical chemistry (journal) , nanoparticle , titanate , optics , chemical engineering , nanotechnology , chemistry , optoelectronics , dielectric , composite material , physics , ceramic , chromatography , engineering
With the use of the Langmuir-Blodgett (LB) method on the KSV NIMA 2002 plant, ferro-electric films of the stabilized barium titanate (ST BTO) from colloidal system of sodium oleate aqueous solution have been produced, which were studied with small angle X-ray scattering and dynamic light scattering techniques. Coagulants with the most characteristic hydrodynamic diameter ~ 200 nm are found and the physical model of their formation from barium titanate nanoparticles (~ 20 nm) in this colloidal system is proposed.By means of compression-expansion isotherms with the use of a MicroBAM micro-scope and the device for measurement of surface potential SPOT, optimum parameters of sedimentation are determined, which made it possible to produce uniform ferroelectric films with ST BTO particles of ~ 20 nm in size and a forbidden band width of 3.6 eV.With scanning probe and electron microscopy, vibrational and X-ray photoelectron spectroscopy, and also X-ray diffractometry, topological and structural features and distri-bution of chemical elements in the produced films on different substrates have been stud-ied.