Observation of room temperature saturated ferroelectric polarization in Dy substituted BiFeO3 ceramics | Zendy

Shuxia Zhang | Zendy; Lei Wang | Zendy; Yao Chen | Zendy; Dongliang Wang | Zendy; Yingbang Yao | Zendy; Yanwei Ma | Zendy

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Observation of room temperature saturated ferroelectric polarization in Dy substituted BiFeO3 ceramics

Author(s) -

Shuxia Zhang,

Lei Wang,

Yao Chen,

Dongliang Wang,

Yingbang Yao,

Yanwei Ma

Publication year - 2012

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3702405

Subject(s) - multiferroics , materials science , ferroelectricity , ceramic , polarization (electrochemistry) , doping , ferroelectric ceramics , sintering , hysteresis , condensed matter physics , magnetic hysteresis , dielectric , nuclear magnetic resonance , analytical chemistry (journal) , magnetization , composite material , optoelectronics , magnetic field , chemistry , physics , chromatography , quantum mechanics

High quality Bi1− x Dy x FeO3 (0 ≤ x ≤ 0.15) ceramics have been fabricated by sintering Dy-doped BiFeO3 (BFO) precursor powders at a low temperature of 780 °C. The magnetic properties of BFO were improved by the introduction of Dy on the Bi-site. More importantly, well saturated ferroelectric hysteresis loops and polarization switching currents have been observed at room temperature. A large remnant polarization (2P r) value of 62 μC/cm2 is achieved, which is the highest value reported so far for rare-earth-doped BFO ceramics. Moreover, mechanisms for improved multiferroic properties depending on chemical doping-caused structure evolutions have also been discussed

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