Effect of crystallization on the band structure and photoelectric property of SrTiO3 sol–gel derived thin film

Xu, Kaien; Yao, Manwen; Chen, Jianwen; Zou, Pei; Peng, Yong; Li, Fēi; Yao, Xi

doi:10.1016/j.jallcom.2015.09.017

Cited by 36 publications

(14 citation statements)

References 59 publications

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“…3 nanosized SrTiO 3 particles an important topic. While numerous methods for the production of SrTiO 3 nanopowders such as sol-gel [11], hydrothermal [12], combustion [13], polymeric precursor [14], molten salt [15] and solvothermal [16] methods have been developed, SrTiO 3 is dominantly obtained by conventional solid state reaction [17]. Most of these methods require high-purity chemicals, making them too expensive for industrial scale synthesis.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Živojinović

Pavlović

Kosanović

et al. 2017

Journal of Alloys and Compounds

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Structural changes caused by mechanical activation of SrTiO 3 powders were investigated using a variety of methods. Average crystallite size continuously decreased with increased activation time to around 20 nm after 120 min activation, while mesopore volume and specific surface area increased accordingly. Higher activation times lead to increased agglomeration of nanoparticles to form agglomerates of around 2 µm in size, ultimately

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Section: Accepted Manuscriptmentioning

confidence: 99%

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Živojinović

Pavlović

Kosanović

et al. 2017

Journal of Alloys and Compounds

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“…The electron affinity of the FeSTO thin lm is speculated to be $4.1 eV, as reported for STO. 35,36 When the metal electrode and dielectric thin lm is brought into contact, free charge carriers will ow until an equilibrium condition is achieved. In this electrode-dielectric interaction, due to a large work function of Au and FeSTO's n-type nature, a space charge depletion region and large barrier height are developed at the Au/FeSTO interface that forms a Schottky-type potential barrier.…”

Section: Resultsmentioning

confidence: 99%

Unipolar resistive switching behavior in sol–gel synthesized FeSrTiO₃ thin films

et al. 2017

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“…[ 5 ] Crystallinity is one of the key parameters to control their physicochemical properties of nanostructured oxides. [ 6–8 ] However, there are major challenges in synthesizing porous complex oxides with highly crystalline frameworks. [ 9–14 ] On one hand, crystallization of complex oxides, in general, has associated kinetic barriers from the slow diffusion in solids.…”

Section: Introductionmentioning

confidence: 99%

Crystalline Mesoporous Complex Oxides: Porosity‐Controlled Electromagnetic Response

Liu

Shi

et al. 2020

Adv Funct Materials

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A colloidal-amphiphile-templated growth is developed to synthesize mesoporous complex oxides with highly crystalline frameworks. Organosilane-containing colloidal templates can convert into thermally stable silica that prevents the overgrowth of crystalline grains and the collapse of the mesoporosity. Using ilmenite CoTiO 3 as an example, the high crystallinity and the extraordinary thermal stability of its mesoporosity are demonstrated at 800 °C for 48 h under air. This synthetic approach is general and applicable to a series of complex oxides that are not reported with mesoporosity and high crystallinity, such as NiTiO . Those novel materials make it possible to build up correlations between mesoscale porosity and surfacesensitive physicochemical properties, e.g., electromagnetic response. For mesoporous CoTiO 3 , there is a 3 K increase of its antiferromagnetic ordering temperature, compared with that of nonporous one. This finding provides a general guideline to design mesoporous complex oxides that allow exploring their unique properties different from bulk materials.complex oxides, in general, has associated kinetic barriers from the slow diffusion in solids. [15] When there are two metal cations involved in crystallization of complex oxides like ABO 3 , their nonuniform distribution can result in spontaneous phase separation to form simple oxides. [16] A delicate balance of their sol-gel rates and the precautious control of thermal annealing procedure is needed. On the other hand, ordering competition between the crystallization of oxides and the mesoscale porosity brings profound difficulties to synthesize complex oxides (e.g., perovskites and ilmenites) with mesoporous structures. Crystallization usually leads to the formation of large crystalline grains that will create strong interfacial energies between crystalline walls and pores (e.g., air or templates). For any templated growth of mesoporous oxides using hydrocarbon-based surfactants or block copolymers (BCPs) as soft templates, [17][18][19] mesoscale nanostructures collapse prior to the crystallization of oxides, [20][21][22] because these soft templates are not mechanically strong and thermally stable under elevated temperatures (i.e., >500 °C).Nanostructures show a profound impact on the magnetic properties of materials as well and a few theoretical models have been proposed to understand magnetic behavior of nanoscale particles. [23][24][25][26][27][28][29][30] The magnetic ordering temperature (Curie temperature or Néel temperature) in magnetic materials

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Effect of crystallization on the band structure and photoelectric property of SrTiO3 sol–gel derived thin film

Cited by 36 publications

References 59 publications

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Unipolar resistive switching behavior in sol–gel synthesized FeSrTiO₃ thin films

Crystalline Mesoporous Complex Oxides: Porosity‐Controlled Electromagnetic Response

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Effect of crystallization on the band structure and photoelectric property of SrTiO3 sol–gel derived thin film

Cited by 36 publications

References 59 publications

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

The influence of mechanical activation on structural evolution of nanocrystalline SrTiO3 powders

Unipolar resistive switching behavior in sol–gel synthesized FeSrTiO3 thin films

Crystalline Mesoporous Complex Oxides: Porosity‐Controlled Electromagnetic Response

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Unipolar resistive switching behavior in sol–gel synthesized FeSrTiO₃ thin films