Enhanced ferroelectricity, piezoelectricity and ferromagnetism in (Ba0.75Ca0.25)TiO3 modified BiFeO3 multiferroic ceramics
作者： XN Zhu , MS Rahman , YJ Wu , XQ Liu , YH Huang
DOI: 10.1016/J.JALLCOM.2015.11.020
关键词:
摘要: Abstract The phase transition, ferroelectricity, piezoelectricity, and ferromagnetic characteristics of Bi 1− x (Ba 0.75 Ca 0.25 ) Fe Ti O 3 ( = 0.2–0.4) ceramics have been systematic studied. rhombohedral R3c tetragonal P4mm phases are determined for = 0.2 = 0.4, respectively, the composition = 0.3 indicates diphase structure. saturated P – E loop with a significantly enhanced remnant polarization r ∼43 μC/cm 2 by dynamic hysteresis mode (DHM); ∼24 μC/cm positive up negative down (PUND) method) is in 0.7 0.3 at room temperature. coercive field greatly suppressed increasing . magnetization (0.07 emu/g 300 K) also achieved optimal = 0.3. temperature strain–electric (s–E) curves large strain ∼0.2% comprehensive enhancement suggests that introducing boundary promoting way to put BiFeO towards applications.
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