NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2018, 9 (5), P. 676–687
Formation mechanism, thermal and magnetic properties of (Bi1-xSrx)m+1Fem-3Ti3O3(m+1)-δ (m = 4 – 7) ceramics
N. A. Lomanova – Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg 194021, Russian Federation; natus@mail.ioffe.ru
M.V. Tomkovich – Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg 194021, Russian Federation
V. L. Ugolkov – Grebenshchikov Institute of Silicates Chemistry RAS, Adm. Makarova emb. 2, St. Petersburg, 199034, Russian Federation
M. P. Volkov – Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg 194021, Russian Federation
I.V. Pleshakov – Ioffe Institute, 26 Polytekhnicheskaya Str., St. Petersburg 194021, Russian Federation
V.V. Panchuk – St. Petersburg State University, 79 Universitetskaya Emb., St. Petersburg, 199034; Institute for Analytical Instrumentation of RAS, St. Petersburg, ul. Ivana Chernykh, 3133, lit. A., 198095, Russian Federation
V. G. Semenov – – St. Petersburg State University, 79 Universitetskaya Emb., St. Petersburg, 199034; Institute for Analytical Instrumentation of RAS, St. Petersburg, ul. Ivana Chernykh, 3133, lit. A., 198095, Russian Federation
Specific features of the formation of Aurivillius phases (Bi1-xSrx)m+1Fem-3Ti3O3(m+1)-δ (m = 4 – 7, x=0.0 – 0.7) with a perovskite-like block having a nanometric thickness (h) of 2 – 3 nm are described. It has been established that the degree of isomorphous substitution in the bismuth sublattice and thermal stability of phases tend to reduce with the increasing h. It has been demonstrated that the magnetic ions inside the perovskite-like block can have antiferromagnetic interaction exchange that influences magnetic properties of the Aurivillius phases.
Keywords: aurivillius phases, nanolayers, perovskite-like nanoblocks, formation mechanism, thermal properties, magnetic properties.
DOI 10.17586/2220-8054-2018-9-5-676-687
