Open AccessDestruction phenomena in ferroactive materials
Author(s) -
С. В. Хасбулатов,
Alexander V. Cherpakov,
Ivan A. Parinov,
K. P. Andryushin,
Л. А. Шилкина,
V. A. Aleshin,
I. N. Andryushina,
Balabek Mardaliev,
David Gordienko,
И. А. Вербенко,
Л. А. Резниченко
Publication year - 2020
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x20500125
Subject(s) - materials science , ceramic , multiferroics , bismuth , ferrite (magnet) , sintering , bismuth ferrite , crystal structure , solid solution , rare earth , composite number , grain size , composite material , metallurgy , crystallography , dielectric , ferroelectricity , chemistry , optoelectronics
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 ([Formula: see text] Å) 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.