Multiferroic, magnetoelectric and magneto-impedance properties of NiFe2O4/(Pb, Sr) TiO3 bilayer films

Negi, N. S.; Bala, Kanchan; Shah, Jyoti

doi:10.1007/s10832-016-0059-5

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…For example, Guo et al, have reported a novel ferroelectric/gyromagnetic ferrite layered composite thin film using as ferroelectric layer Pb 0.4 Sr 0.6 TiO 3 (PST) thin films [14]. Negi et al, have prepared NiFe 2 O 4 /(Pb, Sr)TiO 3 (NFO/PST) bilayer thin films by the chemical solution method and investigated their multiferroic, magnetoelectric and magneto-impedance properties [17]. In addition, the most common application is in nonvolatility memory devices, in which is used the ability of ferroelectric thin films to maintain their polarization state in the absence of an external field even after electric writing process.…”

Section: Introductionmentioning

confidence: 99%

Investigation of defects dependence of local piezoelectric response on Fe, La-modified (Pb,Sr)TiO3 thin films: A piezoresponse force microscopy study

Bastos

Longo

Chiquito

et al. 2018

Materials Chemistry and Physics

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h i g h l i g h t s g r a p h i c a l a b s t r a c t The Fe, La co-doping (Pb,Sr)TiO 3 films are fabricated by sol-gel like method. The defect dipoles can be reorient under an PFM tip-bias-induced electric field. The Fe, La co-doping (Pb,Sr)TiO 3 films behaved like ferroelectric at the nanoscale. a b s t r a c t In this study, undoped-(Pb,Sr)TiO 3 and Fe 3þ , La 3þ co-doped (Pb,Sr)TiO 3 thin films were investigated at the nanoscale level by piezoresponse force microscopy (PFM), in order to evaluate the impact of dopinginduced damages on the ferroelectric and piezoelectric properties. Detailed investigations with nanoscale resolution have revealed occurrence of abnormal domains in writing pattern under forward and reverse bias for (Pb,Sr,La)(Ti,Fe)O 3 thin films. Further piezoresponse hysteresis loop measurements show that fully switchable loops were observed under high voltage mediated by defect dipoles and by "ferroelectric-like" polar defects clusters. They have been discussed taking into account charged defect formation with both local changes in the dipole moment and local symmetry breaking effects. In addition, the domain writing and its retention behavior of the undoped-PST and (Pb,Sr,La)(Ti,Fe)O 3 thin films were investigated. Undoped-PST films exhibited better stability for both positive and negative domains for a relatively long time in comparison to that observed for (Pb,Sr,La)(Ti,Fe)O 3 films.

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Section: Introductionmentioning

confidence: 99%