Detecting the Burns temperature in Na0.5Bi0.5TiO3-xBaTiO3 lead-free relaxor ferroelectrics by means of acoustic emission. (27th December 2018)

• Record Type: Journal Article
• Authors: Dul'kin, Evgeniy; Mojaev, Evgeny; Roth, Michael
• Is Part Of: Europhysics letters. Volume 124:Number 5(2018:Dec.)
• Publication Date: 2018-12-27
• Subjects: 77.80.Jk -- 77.80.B- -- 43.40.Le; Physics -- Periodicals; Electronic journals; 530.05
• DOI: 10.1209/0295-5075/124/57001
• Languages: English
• ISSNs: 0295-5075

Abstract

Abstract: Na0.5 Bi0.5 TiO3 - x BaTiO3 ceramics samples (0 < x < 0.8) were studied by means of an acoustic emission method. The characteristic temperatures such as the Burns temperature, T B, the transition to paraelectric phase, T p, the temperature maximum of the dielectric constant, T m, and the intermediate temperature, were detected and their dependences on x were plotted. Based on the comparison of the obtained data with the previously published ones, it is shown that the Burns temperature, T B, cannot be reliably determined by the deviation of the reverse dielectric constant, , from a straight line.