Ferroelectric and ferromagnetic properties of SrTi0.9Fe0.1O3−δ thin films

Wang, Y.G.; Tang, Xin‐Gui; Liu, Q.X.; Jiang, Yanping; Feng, Zhiwei

doi:10.1016/j.ssc.2014.11.001

Cited by 11 publications

(11 citation statements)

References 25 publications

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“…Sr(Ti 1− x Fe x )O 3 (STF, x = 0, 0.05, 0.1, 0.15, and 0.2; abbreviated as STO, STF05, STF10, STF15, and STF20, respectively) thin films were synthesized on the LaNiO 3 (LNO) coated Si(100) substrates by a sol-gel route with a spin-coating process [23]. To form the precursor, reagent-grade strontium acetate, iron nitrate nonahydrate, and titanium butyrate were dissolved under continuous stirring at 60 °C in solvents acetic acid, 2-methoxyethanol, and acetyl acetone, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, the Fe substituting is a quite feasible approach to promote the ferroelectric properties in SrTiO 3 . However, we can find only a little research about the ferroelectric properties of the Sr(Ti 1− x Fe x )O 3 films [21,22,23], and the influence of Fe substitution concentration on the ferroelectric and leakage current behavior of the sol-gel derived Sr(Ti 1− x Fe x )O 3 thin films has not been reported still now.…”

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: Methodsmentioning

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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“…Iron-substituted strontium titanate or SrTi 1−x Fe x O 3−δ (STF) (here δ represents the oxygen deficiency with respect to a stoichiometric perovskite SrTi 1−x Fe x O 3 , i.e., one in which the Fe is present as Fe 4þ ) has been extensively characterized as a mixed electronic-ionic conductor [11][12][13][14][15] and for its magnetic, magneto-optical, ferroelectric, and catalytic properties [16][17][18][19]. Characterization of STF has included determining its oxygen content via thermogravimetric analysis and coulometric titration [20,21], and measurements of ionic and electronic conductivity and impedance [12,13,15,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Magnetism and Faraday Rotation in Oxygen-Deficient Polycrystalline and Single-Crystal Iron-Substituted Strontium Titanate

et al. 2017

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Both polycrystalline and single-crystal films of iron-substituted strontium titanate, SrðTi 0.65 Fe 0.35 ÞO 3−δ , prepared by pulsed laser deposition, show room-temperature magnetism and Faraday rotation, with the polycrystalline films exhibiting higher saturation magnetization and Faraday rotation. The magnetic properties vary with the oxygen pressure at which the films are grown, showing a maximum at pressures of approximately 4 μ Torr at which the unit-cell volume is largest. The results are discussed in terms of the oxygen stoichiometry and corresponding Fe valence states, the structure and strain state, and the presence of small-volume fractions of metallic Fe in single-crystal films grown at the optimum deposition pressure. Integration of magneto-optical polycrystalline films on an optical-waveguide device demonstrates a nonreciprocal phase shift.

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“…capacitors,f ilters,a nd microelectronic devices.T om odify and improve the properties of SrTiO 3 ,m any solid solutions, such as Fe-doped SrTiO 3 thin films, [18] Sm-doped SrTiO 3 ceramics, [19] and Nb-doped SrTiO 3 single crystals, [20] have been studied.…”

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confidence: 99%

High‐Temperature Dielectric Relaxation Behaviors of Relaxer‐Like PbZrO₃–SrTiO₃ Ceramics for Energy‐Storage Applications

et al. 2016

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(1−x)PbZrO3–xSrTiO3 (x: 10, 20, and 30 mol %) ceramics were prepared by a conventional mixed‐oxide solid‐state reaction method. The relaxer behaviors of the PbZrO3–SrTiO3 ceramics were examined in the temperature range of 120–523 K. A broad dielectric maximum that shifted to higher temperature with increasing frequency signified the relaxer‐type behaviors of these ceramics. The value of the relaxation parameter of γ=1.73, estimated from the linear fit of the modified Curie–Weiss law, indicated the relaxer nature. High‐temperature dielectric relaxation phenomena were found in the temperature region of 600‐850 K. The activation energy, calculated from impedance measurements of samples, suggested that the dielectric relaxation was a result of oxygen vacancies generated during the sintering process. The energy‐storage density calculated from hysteresis loops reached about 0.46 J cm−3 for the PSZT30 ceramic at room temperature.

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Ferroelectric and ferromagnetic properties of SrTi0.9Fe0.1O3−δ thin films

Cited by 11 publications

References 25 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

Magnetism and Faraday Rotation in Oxygen-Deficient Polycrystalline and Single-Crystal Iron-Substituted Strontium Titanate

High‐Temperature Dielectric Relaxation Behaviors of Relaxer‐Like PbZrO₃–SrTiO₃ Ceramics for Energy‐Storage Applications

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Ferroelectric and ferromagnetic properties of SrTi0.9Fe0.1O3−δ thin films

Cited by 11 publications

References 25 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

Magnetism and Faraday Rotation in Oxygen-Deficient Polycrystalline and Single-Crystal Iron-Substituted Strontium Titanate

High‐Temperature Dielectric Relaxation Behaviors of Relaxer‐Like PbZrO3–SrTiO3 Ceramics for Energy‐Storage Applications

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Product

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High‐Temperature Dielectric Relaxation Behaviors of Relaxer‐Like PbZrO₃–SrTiO₃ Ceramics for Energy‐Storage Applications