Comparison of random field strengths in (1-x)SrTiO3-xBiFeO3 and (1-x)SrTiO3-xBaTiO3 relaxor ferroelectrics by means of acoustic emission

Autor:	Evgeniy Dul'kin, Michael Roth
Rok vydání:	2020
Předmět:	Physics Random field Condensed matter physics Field (physics) External bias Condensed Matter Physics Electronic Optical and Magnetic Materials Maxima and minima Acoustic emission visual_art Electric field visual_art.visual_art_medium Ceramic Bias field Instrumentation
Zdroj:	The European Physical Journal Applied Physics. 92:20401
ISSN:	1286-0050 1286-0042
DOI:	10.1051/epjap/2020200075
Popis:	In relaxor (1-x)SrTiO3-xBiFeO3 ferroelectrics ceramics (x = 0.2, 0.3 and 0.4) both intermediate temperatures and Burns temperatures were successfully detected and their behavior were investigated in dependence on an external bias field using an acoustic emission. All these temperatures exhibit a non-trivial behavior, i.e. attain the minima at some threshold fields as a bias field enhances. It is established that the threshold fields decrease as x increases in (1-x)SrTiO3-xBiFeO3, as it previously observed in (1-x)SrTiO3-xBaTiO3 (E. Dul'kin, J. Zhai, M. Roth, Phys. Status Solidi B 252, 2079 (2015)). Based on the data of the threshold fields the mechanisms of arising of random electric fields are discussed and their strengths are compared in both these relaxor ferroelectrics.
Databáze:	OpenAIRE
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