Mask assisted fabrication of nanoislands of BiFeO3 by ion beam milling

Morelli, Alessio; Johann, Florian; Schammelt, N.; McGrouther, D.; Vrejoiu, Ionela

doi:10.1063/1.4801904

Cited by 21 publications

(19 citation statements)

References 17 publications

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“…Recently, Morelli et al [27] fabricated BFO nanoislands by template-assisted FIB method based on epitaxial BFO thin films grown on SrTiO 3 (100) substrates. Arrays of 45 nmthick aluminium dots were first evaporated on BFO thin films through template with aperture diameter of 400 nm.…”

Section: Focus Ion Beam (Fib) Millingmentioning

confidence: 99%

“…By using the top-down approach such as FIB milling method, Morelli et al [27] fabricated the arrays of epitaxial BFO islands with flat top surfaces and lateral sizes down to 250 nm by starting from a continuous BFO thin film. PFM images showed that the as-fabricated BFO nanoislands preserved ferroelectric properties with switchable polarization and exhibited retention of polarization state at least for several days.…”

Section: Bfo Nanoislandsmentioning

confidence: 99%

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Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures

Zhou

Liang

et al. 2014

Journal of Nanomaterials

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Low-dimensional BiFeO 3 nanostructures (e.g., nanocrystals, nanowires, nanotubes, and nanoislands) have received considerable attention due to their novel size-dependent properties and outstanding multiferroic properties at room temperature. In recent years, much progress has been made both in fabrications and (microstructural, electrical, and magnetic) in characterizations of BiFeO 3 low-dimensional nanostructures. An overview of the state of art in BiFeO 3 low-dimensional nanostructures is presented. First, we review the fabrications of high-quality BiFeO 3 low-dimensional nanostructures via a variety of techniques, and then the structural characterizations and physical properties of the BiFeO 3 low-dimensional nanostructures are summarized. Their potential applications in the next-generation magnetoelectric random access memories and photovoltaic devices are also discussed. Finally, we conclude this review by providing our perspectives to the future researches of BiFeO 3 low-dimensional nanostructures and some key problems are also outlined.

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Section: Focus Ion Beam (Fib) Millingmentioning

confidence: 99%

Section: Bfo Nanoislandsmentioning

confidence: 99%

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures

Zhou

Liang

et al. 2014

Journal of Nanomaterials

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“…In this way the material is removed where the layer is not present, therefore producing defined islands without utilization of high-energy beam [51].…”

Section: Mask-assisted Fib Millingmentioning

confidence: 99%

Epitaxial Ferroelectric Nanostructures Fabricated by FIB Milling

Morelli

Vrejoiu

2013

Lecture Notes in Nanoscale Science and Technology

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In this chapter we explore the possibilities offered by focused ion beam milling to fabricate epitaxial islands out of bismuth ferrite thin films. Three processes are described: first one consisting of high-energy direct milling of a film followed by annealing procedures, a second one of high-energy milling of a film coated with a sacrificial layer which is removed successively, and a third one of lowenergy milling of a film previously structured with sacrificial layer islands. Ferroelectric properties of the obtained structures have been investigated at a nanoscale level by piezoresponse force microscopy, in order to evaluate the impact of fabrication-induced damages on the functional properties. Structures produced by direct milling display ferroelectricity only after a post-fabrication annealing procedure, exhibiting polarization pinning only for structures with lateral sizes <500 nm. Detailed investigations have revealed occurrence of pinning and/or high imprint in an area within 100 nm distance from the structure edges, independently of the structure size. On the contrary, 250 nm large islands produced by milling through a sacrificial layer and over the structured sacrificial layer display ferroelectricity, without diminution of functional properties. Hence we conclude that focused ion beam milling is a viable technique for fabrication of ferroelectric structures, in particular bismuth ferrite nanoislands.

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“…Timeline of significant results from FIB processing of ferroelectrics. Adapted with permission from (in chronological order): Ganpule, Stanishevsky et al; Bühlmann, Dwir et al; Nagarajan, Stanishevsky et al; Nagarajan, A. Roytburd et al; Chu, Martin et al; Rémiens, Liang et al; McQuaid, McGilly et al; Schilling, Prosandeev et al; Morelli, Johann et al; Whyte, McQuaid et al; Whyte and Gregg …”

Section: Introductionmentioning

confidence: 99%

Nanostructuring Ferroelectrics via Focused Ion Beam Methodologies

Burns

Gregg

Valanoor

2016

Adv Funct Materials

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As we reach the physical limit of Moore's law and silicon based electronics, alternative schemes for memory and sensor devices are being proposed on a regular basis. The properties of ferroelectric materials on the nanoscale is key to developing device applications of this intriguing material class, and has been readily pursued in recent times. One of the most significant techniques with which nanostructuring is achieved is the focused-ion-beam (FIB) microscope. Alongside nanoscale characterization obtained from piezoresponse force microscopy, the FIB has become a powerful tool in the search for first principles understanding of the ferroelectric phenomena. This review explores a brief history of the relationship between the FIB and ferroelectrics, the fascinating properties it has unveiled, and some alternative nanostructuring techniques.

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Mask assisted fabrication of nanoislands of BiFeO3 by ion beam milling

Abstract: We report on a low-damage method for direct and rapid fabrication of arrays of epitaxial

Cited by 21 publications

References 17 publications

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures

Epitaxial Ferroelectric Nanostructures Fabricated by FIB Milling

Nanostructuring Ferroelectrics via Focused Ion Beam Methodologies

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Mask assisted fabrication of nanoislands of BiFeO3 by ion beam milling

Abstract: We report on a low-damage method for direct and rapid fabrication of arrays of epitaxial

Cited by 21 publications

References 17 publications

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO3 Nanostructures

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO3 Nanostructures

Epitaxial Ferroelectric Nanostructures Fabricated by FIB Milling

Nanostructuring Ferroelectrics via Focused Ion Beam Methodologies

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Product

Resources

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Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures

Fabrication, Characterization, Properties, and Applications of Low‐Dimensional BiFeO₃ Nanostructures