Destruction phenomena in ferroactive materials

查看全文 作　　者：Sidek [1,2]Khasbulatov;Aleksander [3]Cherpakov;Ivan [3]Parinov;Konstantin [1]Andryushin;Lidiya [1]Shilkina;Vladimir [1]Aleshin;Inna [1]Andryushina;Balabek [4]Mardaliev;David [4]Gordienko;Iliya [1]Verbenko;Larisa [1]Reznichenko 机构地区：[1]Research Institute of Physics Southern Federal University Rostov-on-Don 344090,Stachki str.194,Russia;[2]Faculty of Physics and Information-Communication Technologies Grozny 364024,Sultan Dudaev Boulevard,17A Russia;[3]Institute of Mathematics Mechanics and Computer Science named after of I.I.Vorovich Southern Federal University 344090 Rostov-on-Don,Stachki str.200/1,Russia;[4]Faculty of Physics,Southern Federal University 344090 Rostov-on-Don,Zorge 5,Russia 出　　处：《Journal of Advanced Dielectrics》索引2020年第10卷第4期,共9页 基　　金：Research was financially supported by the Ministry of Sci-ence and Higher Education of the Russian Federation(State assignment in the field of scientific activity,Southern Federal University,2020). 摘　　要：The results of a comprehensive study of the crystal structure,grain structure,and strength properties of ceramic bismuth ferrite with rare earth elements(REE)obtained by two-stage solid-phase synthesis followed by sintering using conventional ceramic technology are presented.The reasons for the formation of low mechanical strength and the development of destruction phenomena in solid solutions with small REE(
R<0:94Å)are considered:Tb,Dy,Ho,Er,Tm,Yb,Lu.The causes of the observed phenomena associated with the composite-like structure of the studied media and,as a consequence,the occurrence of local stresses of structural elements that provoke crack formation are established.A source of the latter are also the structural features of the grain landscape.The conclusion is made about the appropriateness of taking into account the information obtained when developing devices based on BiFeO_(3)/REE multiferroics. 关 键 词：STRUCTURE MICROSTRUCTURE DESTRUCTION MULTIFERROICS