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Sol‐gel method to obtain the ferroelectromagnetic ceramics (Pb(Fe 0.5 Nb 0.5 )O 3 ) for micromechatronic applications
Author(s) -
Bochenek D.,
Zachariasz R.
Publication year - 2015
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201400350
Subject(s) - niobium , materials science , ceramic , octahedron , microstructure , dielectric , ferroelectricity , perovskite (structure) , mineralogy , ion , elastic modulus , analytical chemistry (journal) , crystallography , crystal structure , metallurgy , composite material , chemistry , optoelectronics , organic chemistry , chromatography
Lead iron niobate, Pb(Fe 0.5 Nb 0.5 )O 3 belong to a family of materials with a perovskite structure with the general formula A(B′B″)O 3 , where in positions A–Pb ions substitute themselves, and in octahedral positions B′ and B″ ions of iron Fe and niobium Nb in a random way. The Pb(Fe 0.5 Nb 0.5 )O 3 material is characterized by two ordered antiferromagnetic and ferroelectric sub‐systems. A technological process of the ferroelectromagnetic Pb(Fe 0.5 Nb 0.5 )O 3 ceramics have a significant influence on a crystalline structure and a ceramics microstructure. In the present paper, we study a sol‐gel technology of the production of the Pb(Fe 0.5 Nb 0.5 )O 3 ceramics. The obtained specimens were subjected to micro‐structural examinations and tests of mechanical and dielectric properties. Temperature dependences of mechanical loss Q – 1 (T) and Young's modulus E(T) were conducted by an automatic relaxator of acoustic frequencies of a RAK‐3 type and dielectric test were made on a capacity bridge of a QuadTech 1920 Precision LCR Meter type.