Deposition of epitaxial BiFeO3/CoFe2O4 nanocomposites on (001) SrTiO3 by combinatorial pulsed laser deposition

Aimon, Nicolas M.; Kim, Dong Hun; Choi, H. K.; Ross, Caroline A.

doi:10.1063/1.3690957

Cited by 90 publications

(80 citation statements)

References 31 publications

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“…VAN films can either be deposited from a single target (as is most commonly and simply done) or indeed by ablating two targets with the help of an automated carousel. 70 It is important to note that epitaxial VAN films are no more complicated to grow than standard epitaxial films. From an application point of view, the challenge is, therefore, not any complication of the VAN structures but, instead, it is the use of PLD, just as for other epitaxial oxides.…”

Section: Growth Mechanisms Of Van Filmsmentioning

confidence: 99%

Research Update: Fast and tunable nanoionics in vertically aligned nanostructured films

Lee

MacManus‐Driscoll

2017

APL Materials

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This review provides the design principles to develop new nanoionic applications using vertically aligned nanostructured (VAN) thin films, incorporating two phases which self-assemble in one film. Tunable nanoionics has attracted great attention for energy and device applications, such as ion batteries, solid oxide fuel cells, catalysts, memories, and neuromorphic devices. Among many proposed device architectures, VAN films have strong potential for nanoionic applications since they show enhanced ionic conductivity and tunability. Here, we will review the recent progress on state-of-the-art nanoionic applications, which have been realized by using VAN films. In many VAN systems made by the inclusion of an oxygen ionic insulator, it is found that ions flow through the vertical heterointerfaces. The observation is consistent with structural incompatibility at the vertical heteroepitaxial interfaces resulting in oxygen deficiency in one of the phases and hence to oxygen ion conducting pathways. In other VAN systems where one of the phases is an ionic conductor, ions flow much faster within the ionic conducting phase than within the corresponding plain film. The improved ionic conduction coincides with much improved crystallinity in the ionically conducting nanocolumnar phase, induced by use of the VAN structure. Furthermore, for both cases Joule heating effects induced by localized ionic current flow also play a role for enhanced ionic conductivity. Nanocolumn stoichiometry and strain are other important parameters for tuning ionic conductivity in VAN films. Finally, double-layered VAN film architectures are discussed from the perspective of stabilizing VAN structures which would be less stable and hence less perfect when grown on standard substrates.

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Section: Growth Mechanisms Of Van Filmsmentioning

confidence: 99%

Research Update: Fast and tunable nanoionics in vertically aligned nanostructured films

Lee

MacManus‐Driscoll

2017

APL Materials

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“…Artificially constructed horizontal oxide heterointerfaces in the form of superlattices, multilayers, and/or heterostructures have been widely investigated to manipulate physical properties789. Recently, nanocomposites with a vertical interface network are emerging as an alternative approach to tune physical properties since microstructure, interfacial coupling, and lattice strain can be tailored from 2D to 3D10111213141516171819. The lack of substrate clamping effect and the presence of large interfacial area in thick vertically aligned nanocomposite films in comparison with conventional horizontal heterostructures make such a new 3D architecture attractive20 to tune the functionalities of materials21.…”

mentioning

confidence: 99%

Evolution of microstructure, strain and physical properties in oxide nanocomposite films

Chen

Weigand

et al. 2014

Sci Rep

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We, using LSMO:ZnO nanocomposite films as a model system, have studied the effect of film thickness on the physical properties of nanocomposites. It shows that strain, microstructure, as well as magnetoresistance strongly rely on film thickness. The magnetotransport properties have been fitted by a modified parallel connection channel model, which is in agreement with the microstructure evolution as a function of film thickness in nanocomposite films on sapphire substrates. The strain analysis indicates that the variation of physical properties in nanocomposite films on LAO is dominated by strain effect. These results confirm the critical role of film thickness on microstructures, strain states, and functionalities. It further shows that one can use film thickness as a key parameter to design nanocomposites with optimum functionalities.

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“…Among the variety of nanocomposite thin films studied, BiFeO 3 / CoFe 2 O 4 (BFO/CFO) grown on SrTiO 3 (STO) substrates are some of the most thoroughly explored [28] [29]. Recent works by Ross [30] has demonstrated a self-assembled triblock process methods to fabricate templated BFO/CFO vertically aligned nanocomposites with 44 nanometer periodicity.…”

Section: E Nano-composite Multiferroicsmentioning

confidence: 99%

A Material Framework for Beyond-CMOS Devices

Galatsis

Ahn

Kim

et al. 2015

IEEE J. Explor. Solid-State Comput. Devices Circuits

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Beyond CMOS devices concepts are greatly dependent on new functional materials to provide inspiration and innovation beyond the silicon status quo. Here, we propose a material framework specifically for beyond CMOS devices. In doing so, material system examples and data points presented are taken from the Center on "Functional Accelerated Nanomaterials Engineering" (FAME), a STARnet Center of Excellence.

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Deposition of epitaxial BiFeO3/CoFe2O4 nanocomposites on (001) SrTiO3 by combinatorial pulsed laser deposition

Cited by 90 publications

References 31 publications

Research Update: Fast and tunable nanoionics in vertically aligned nanostructured films

Research Update: Fast and tunable nanoionics in vertically aligned nanostructured films

Evolution of microstructure, strain and physical properties in oxide nanocomposite films

A Material Framework for Beyond-CMOS Devices

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