Effect of Fe-doping concentration on microstructure, electrical, and magnetic properties of Pb(Zr0.5Ti0.5)O3 thin films prepared by chemical solution deposition

Abstract

The highly (l00) oriented Pb(Zr0.5Ti0.5)O3 thin films with different Fe3+ doping concentrations were fabricated on LaNiO3-coated silicon substrates by chemical solution deposition. And the microstructure, ferroelectric, leakage, and magnetic properties were investigated. The results indicate that incorporation of Fe3+ into PZT thin films can promote the degree of the lattice distortion and greatly improve the surface roughness. In comparison with the pure PZT sample, the ferroelectric hysteresis loops of Fe-doped PZT samples demonstrate larger and larger polarizations and coercive fields with the increase in Fe3+ doping amount. Moreover, leakage mechanism of present films evolves from the space charge limited conduction to the “modified” space charge limited conduction, and then returns to the space charge limited conduction with increasing Fe3+ doping concentration. The occurrence of exchange bias in these Fe-doped PZT samples implies that the magnetic exchange interaction can be explained by the bound magnetic polaron model.

Microstructural, Electrical, and Magnetic Properties of Acceptor‐Doped Nanostructured Lead Zirconate Titanate

“…In contrast, RTFM behavior was not observed in high temperature processed Fe‐doped PbTiO 3 ceramic compacts . Bai et al . have reported the occurrence of ferromagnetic properties in Fe‐doped PZT thin films along with their inherent ferroelectric nature.…”

“…23,24 In contrast, RTFM behavior was not observed in high temperature processed Fe-doped PbTiO 3 ceramic compacts. 25 Bai et al 26 have reported the occurrence of ferromagnetic properties in Fe-doped PZT thin films along with their inherent ferroelectric nature. However, many questions remain "yet to be answered" regarding the underlying microscopic mechanisms of longrange magnetic order.…”

Influence of Li doping on domain wall motion in Pb(Zr0.52Ti0.48)O3 films

“…Zhu et al [13] reported that Mn-doping limited domain wall mobility and so decreased the dielectric and ferroelectric properties in PZT films. Bai et al [14] explained the larger polarization and coercive fields observed in their Fe-doped PZT films in terms of a larger lattice distortion, improved microstructure (e.g., a decrease in surface roughness) and the effective suppression of defects. To date, there are few reports about the properties of Li-doped PZT films.…”

Magnetoelectric effect in doped magnetic ferroelectrics

“…Magnetization appears due to artificially introduced magnetic impurities [7][8][9][10][11][12][13][14][15]. Several mechanisms of coupling between magnetic impurities are known [19].…”

“…Among various MF materials the doped magnetic ferroelectrics (DMFE) attract a lot of attention since these materials demonstrate the existence of electric polarization and magnetization at room temperatures [7][8][9][10][11][12][13][14][15]. DMFEs are fabricated by doping of ferroelecrics (FE) with magnetic impurities.…”