Structural and multiferroic properties of Fe-doped Ba0.5Sr0.5TiO3 solids

Guo, Zhengang; Pan, Liqing; Bi, Chong; Qiu, Hongmei; Zhao, Xuedan; Yang, Lihong; Rafique, Mohsin

doi:10.1016/j.jmmm.2012.08.023

Cited by 48 publications

(18 citation statements)

References 39 publications

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“…Fe ions)-V Ö complex could exist in the unit cells by binding cations and oxygen vacancies [32,33], and therefore increase the total polarization [34]. However, meanwhile, the doping of Fe ions can also weaken the ferroelectric of the STF thin films because of the strong magnetic coupling between the doped Fe ions [18]. Therefore, the polarization did not increase linearly with the increasing concentration of Fe.…”

Section: Resultsmentioning

confidence: 99%

“…Such characteristics inspire us to investigate the possible multiferroic properties of the Fe-doped SrTiO 3 , which may have potential applications in memory devices, sensors, and actuators [16,17]. Owing to the obtained ferromagnetic property in the Fe-doped SrTiO 3 [13,18,19,20], and the excellent dielectric properties of SrTiO 3 , the study of the ferroelectric properties will play a significant role on the multiferroic application of the SrTi 1− x Fe x O 3 .…”

Section: Introductionmentioning

confidence: 99%

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Room Temperature Tunable Multiferroic Properties in Sol-Gel-Derived Nanocrystalline Sr(Ti1−xFex)O3−δ Thin Films

et al. 2017

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Sr(Ti1−xFex)O3−δ (0 ≤ x ≤ 0.2) thin films were grown on Si(100) substrates with LaNiO3 buffer-layer by a sol-gel process. Influence of Fe substitution concentration on the structural, ferroelectric, and magnetic properties, as well as the leakage current behaviors of the Sr(Ti1−xFex)O3−δ thin films, were investigated by using the X-ray diffractometer (XRD), atomic force microscopy (AFM), the ferroelectric test system, and the vibrating sample magnetometer (VSM). After substituting a small amount of Ti ion with Fe, highly enhanced ferroelectric properties were obtained successfully in SrTi0.9Ti0.1O3−δ thin films, with a double remanent polarization (2Pr) of 1.56, 1.95, and 9.14 μC·cm−2, respectively, for the samples were annealed in air, oxygen, and nitrogen atmospheres. The leakage current densities of the Fe-doped SrTiO3 thin films are about 10−6–10−5 A·cm−2 at an applied electric field of 100 kV·cm−1, and the conduction mechanism of the thin film capacitors with various Fe concentrations has been analyzed. The ferromagnetic properties of the Sr(Ti1−xFex)O3−δ thin films have been investigated, which can be correlated to the mixed valence ions and the effects of the grain boundary. The present results revealed the multiferroic nature of the Sr(Ti1−xFex)O3−δ thin films. The effect of the annealing environment on the room temperature magnetic and ferroelectric properties of Sr(Ti0.9Fe0.1)O3−δ thin films were also discussed in detail.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Room Temperature Tunable Multiferroic Properties in Sol-Gel-Derived Nanocrystalline Sr(Ti1−xFex)O3−δ Thin Films

et al. 2017

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“…Both Co 2+ as well as Co 3+ ions can substitute for Ti site [14] and BTO ceramic is expected to lose oxygen due to cobalt substitution. At the low Co concentration, BTO does not have enough oxygen vacancies for a full transition from tetragonal to the hexagonal phase [1,14]. As the Co concentration increases, the amount of oxygen vacancies increase, which influence on the hexagonal phase.…”

Section: Methodsmentioning

confidence: 99%

“…The research and development activities of multiferroic materials, mainly those of perovskite-based systems have increased significantly during recent years due to their significance with fundamental physics and device applications such as sensors, capacitors transducers, and memory devices [1][2][3]. However, the coexistence of both magnetic and ferroelectric properties in one substance is rare.…”

Section: Introductionmentioning

confidence: 99%

“…Basically, multiferroic materials can be fabricated by means of two routes. One route is the composite combining a ferroelectric material with a ferromagnetic material while the other is doping of magnetic impurities into a ferroelectric host material [1][2][3][5][6][7]. In this work, we present a systematic study on BaTiO 3 substituted with different concentration of Co at the Ti site.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Cobalt substitution on the structural, electrical and magnetic properties of BaTiO<inf>3</inf> ceramics

Rani

Kolte

Gopalan

2015

2015 Joint IEEE International Symposium on the Applications of Ferroelectric (ISAF), International Symposium on Integrated Func

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Cobalt doped BaTiO 3 (BaTi 1-x Co x O 3 ) with x = 0, 5, 7.5, 10% have been synthesized by solid state reaction method and their structural, electrical and magnetic properties have been investigated. Structural characterization show that a multiphase ceramic containing both tetragonal and hexagonal structures are obtained for Co compositions from x = 5% to x = 10%. Ferroelectric and ferromagnetic properties have been observed in all the Co-doped BaTiO 3 ceramics at room temperature. The ferromagnetic hysteresis loop at room temperature is due to the formation of oxygen vacancies and their associated exchange interaction. The saturation magnetization (M s ) was 0.010 emu/g for x = 5%. Further, at x = 7.5%, it decreases and again start increasing upto ~ 0.013 emu/g for x = 10% with Cobalt concentration. However, ferroelectric hysteresis loop (P-E) is deteriorated (lossy type) with the increase of Co concentration above x = 5%. The dielectric characterization with frequency has also been carried out for all samples. The dielectric constant decreases with increasing Cobalt concentration.

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Tuning optical and magnetic properties of nanocrystalline BaTiO3 films by Fe doping

et al. 2018

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Structural and multiferroic properties of Fe-doped Ba0.5Sr0.5TiO3 solids

Cited by 48 publications

References 39 publications

Room Temperature Tunable Multiferroic Properties in Sol-Gel-Derived Nanocrystalline Sr(Ti1−xFex)O3−δ Thin Films

Room Temperature Tunable Multiferroic Properties in Sol-Gel-Derived Nanocrystalline Sr(Ti1−xFex)O3−δ Thin Films

Effect of Cobalt substitution on the structural, electrical and magnetic properties of BaTiO<inf>3</inf> ceramics

Tuning optical and magnetic properties of nanocrystalline BaTiO3 films by Fe doping

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