By X-ray diffraction and dielectric spectroscopy,the crystal structure,phase composition,and properties of Sr_(0.6)Ba_(0.4)Nb_(2)O_(6)/Ba_(2)NdFeNb_(4)O_(15)/Sr_(0.6)Ba_(0.4)Nb_(2)/Ba_(2)NdFeNb_(4)O_(15)/SrRuO_(3)/MgO...By X-ray diffraction and dielectric spectroscopy,the crystal structure,phase composition,and properties of Sr_(0.6)Ba_(0.4)Nb_(2)O_(6)/Ba_(2)NdFeNb_(4)O_(15)/Sr_(0.6)Ba_(0.4)Nb_(2)/Ba_(2)NdFeNb_(4)O_(15)/SrRuO_(3)/MgO and Ba_(2)NdFeNb_(4)O_(15)/Sr_(0.6)Ba_(0.4)Nb_(2)O_(6)/Sr_(0.6)Ba_(0.4)-Nb_(2)O/SrRuOg/MgO multilayer heterostructures were studied.The heterostructures were manufactured under identical conditions but differing in the layer deposition sequence.It is shown that the orientation domains are formed in each Ba_(2)NdFeNb_(4)O_(15)(BNFN)and Sr_(0.6)Ba_(0.4)Nb_(2)O(SBN)layers.BNFN and SBN layers have tetragonal unit cells with tensile out-of-plane strain and compression in-plane strain.At T=-100...100℃both heterostructures are characterized by fairly high relative permittivity values.The reasons for the revealed regularities are discussed.展开更多
基金supported by the Ministry of Science and Higher Education of the Russian Federation in the framework of the state task in the field of scientific activity,Grant No.FENW-2022-0001prepared as part of a government assignment Southern Scientific Centre of the Russian Academy of Sciences under Project Number 122020100294-9(FMRE-2025-0051).
文摘By X-ray diffraction and dielectric spectroscopy,the crystal structure,phase composition,and properties of Sr_(0.6)Ba_(0.4)Nb_(2)O_(6)/Ba_(2)NdFeNb_(4)O_(15)/Sr_(0.6)Ba_(0.4)Nb_(2)/Ba_(2)NdFeNb_(4)O_(15)/SrRuO_(3)/MgO and Ba_(2)NdFeNb_(4)O_(15)/Sr_(0.6)Ba_(0.4)Nb_(2)O_(6)/Sr_(0.6)Ba_(0.4)-Nb_(2)O/SrRuOg/MgO multilayer heterostructures were studied.The heterostructures were manufactured under identical conditions but differing in the layer deposition sequence.It is shown that the orientation domains are formed in each Ba_(2)NdFeNb_(4)O_(15)(BNFN)and Sr_(0.6)Ba_(0.4)Nb_(2)O(SBN)layers.BNFN and SBN layers have tetragonal unit cells with tensile out-of-plane strain and compression in-plane strain.At T=-100...100℃both heterostructures are characterized by fairly high relative permittivity values.The reasons for the revealed regularities are discussed.
