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

Shuxia Zhang, Lei Wang, Yao Chen, Dongliang Wang, Yingbang Yao, Yanwei Ma

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79 Scopus citations

Abstract

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.
Original languageEnglish (US)
Pages (from-to)074105
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 8 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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