Self‐Rolling‐Up Enabled Ultrahigh‐Density Information Storage in Freestanding Single‐Crystalline Ferroic Oxide Films (Adv. Funct. Mater. 20/2023)

Guo, Yunting; Peng, Bin; Qiu, Ruibin; Yao, Yufei; Zhao, Yanan; Dong, Guohua; Liu, Ming

doi:10.1002/adfm.202370126

Cited by 3 publications

(7 citation statements)

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“…e) Optical image of the self-rolling-up process. Reproduced with permission [75] Copyright 2023, Wiley-VCH. f) H-M curves of the LSMO/BTO heterostructure, where the red line is the in-plane and out-of-plane hysteresis loop in situ, and the blue line is the in-plane and out-of-plane hysteresis loop freestanding.…”

Section: Freestanding Multiferroic Composite Filmsmentioning

confidence: 99%

“…Guo et al epitaxially grown NiFe 2 O 4 /PbZr 0.3 Ti 0.7 O 3 /Sr 3 Al 2 O 6 heterostructures on [001]-orient STO substrates. [75] The lattice mismatch in different layers was utilized to load the compressive stress on the NiFe 2 O 4 ferromagnetic layer from the Sr 3 Al 2 O 6 layer and to load tensile stress on the PbZr 0.3 Ti 0.7 O 3 ferroelectric layer from the NiFe 2 O 4 layer. In the lift-off process, the freestanding NiFe 2 O 4 /PbZr 0.3 Ti 0.7 O 3 heterostructure will build a scroll-like 3D memory structure by self-rolling-up (Figure 9e).…”

Section: Freestanding Multiferroic Composite Filmsmentioning

confidence: 99%

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Freestanding Perovskite Oxide Membranes: A New Playground for Novel Ferroic Properties and Applications

Han,

Dong,

Liu

et al. 2023

Adv Funct Materials

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Transition metal perovskite oxide membranes and their unique properties have attracted great attention recently and have been developed into one of the research frontiers in condensed matter physics and materials science. Free of constraint imposed by the underlying substrate, freestanding membranes exhibit extraordinary structural tunability and flexibility far exceeding the bulk materials and epitaxial films clamped on substrates, which substantially extends the explorable regime in the phase diagrams. Moreover, high‐quality oxide membranes, even down to a single unit cell, can be synthesized and stacked/integrated with any materials for novel artificial heterostructures and electronic applications. The exceptional structural tunability and stacking ability in oxide membranes provide new knobs to explore the spontaneous symmetry breaking in oxides, providing a fertile playground for emergent primary ferroic/multiferroic properties and electronic applications. Here, the recent progress is briefly reviewed and the promising outlook for future research in ferroic perovskite oxide membranes and their applications is discussed.

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Section: Freestanding Multiferroic Composite Filmsmentioning

confidence: 99%

Section: Freestanding Multiferroic Composite Filmsmentioning

confidence: 99%

Freestanding Perovskite Oxide Membranes: A New Playground for Novel Ferroic Properties and Applications

Han,

Dong,

Liu

et al. 2023

Adv Funct Materials

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“…[ 6,7 ] 3D self‐assembled freestanding nanomembranes offer a wider range of optical functions and mechanical structural designs than 2D planar materials. [ 8–10 ] Typically, the fabrication process of freestanding 3D single‐crystalline nanomembranes relies on heterogeneous epitaxial techniques with lattice interfaces and artificial termination first, [ 11–14 ] which is often considered as lattice matching. During epitaxial processes, residual strain will be inevitably introduced into epitaxial single‐crystalline nanomembranes via lattice mismatch, which often results in a short lifetime and poor uniformity of planar devices.…”

Section: Introductionmentioning

confidence: 99%

“…[ 18–20 ] The epitaxial nanomembranes are then separated from the substrate by layer separation techniques (e.g., chemical lift‐off, 2D‐assisted lift‐off, mechanical spalling). [ 1,4,21,22 ] The released single‐crystalline nanomembranes can then be assembled to fabricate 3D electronic devices with targeted functions such as high‐performance lasers, [ 23 ] memories, [ 11 ] and photodetectors. [ 1 ]…”

Section: Introductionmentioning

confidence: 99%

“…Freestanding semiconductor nanomembranes with high crystallinity exhibit excellent photonic and optoelectronic single-crystalline nanomembranes can then be assembled to fabricate 3D electronic devices with targeted functions such as highperformance lasers, [23] memories, [11] and photodetectors. [1] Rolled-up nanomembranes, [6,8,24] as a fast-evolving technology, can be combined with existing chip manufacturing methods to convert specified 2D precursor structures into micro/nano tubular devices with 3D geometries, [7,10] which can offer a promising chip integration platform by forming 3D volumetric devices with a more compact aerial footprint.…”

Section: Introductionmentioning

confidence: 99%

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Self‐Rolled‐Up Ultrathin Single‐Crystalline Silicon Nanomembranes for On‐Chip Tubular Polarization Photodetectors

Wu,

Zhang,

Zheng

et al. 2023

Advanced Materials

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Freestanding single‐crystalline nanomembranes and their assembly have broad application potential in photodetectors for integrated chips. However, the release and self‐assembly process of single‐crystalline semiconductor nanomembranes still remains great challenges in on‐chip processing and functional integration, and photodetectors based on nanomembrane always suffer from limited absorption of nanoscale thickness. Here, we employ a non‐destructive releasing and rolling process to prepare tubular photodetectors based on freestanding single‐crystalline Si nanomembranes. Spontaneous release and self‐assembly are achieved by residual strain introduced by lattice mismatch at the epitaxial interface of Si and Ge, and the intrinsic stress and strain distributions in self‐rolled‐up Si nanomembranes are analyzed experimentally and computationally. The advantages of light trapping and wide‐angle optical coupling are realized by tubular geometry. Our Si microtube device achieves reliable Ohmic contact and exhibits a photoresponsivity of over 330 mA/W, a response time of 370 μs, and a light incident detection angle range of over 120°. Furthermore, the microtubular structure shows a distinct polarization angle‐dependent light absorption, with a dichroic ratio of 1.24 achieved at 940 nm. The proposed Si‐based microtubes provide new possibilities for the construction of multifunctional chips for integrated circuit ecosystems in More than Moore era.This article is protected by copyright. All rights reserved

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Strain Engineering: Perfecting Freestanding Perovskite Oxide Fabrication

Yun,

le Cozannet,

Christoffersen

et al. 2024

Small

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Freestanding oxide membranes provide a promising path for integrating devices on silicon and flexible platforms. To ensure optimal device performance, these membranes must be of high crystal quality, stoichiometric, and their morphology free from cracks and wrinkles. Often, layers transferred on substrates show wrinkles and cracks due to a lattice relaxation from an epitaxial mismatch. Doping the sacrificial layer of Sr3Al2O6 (SAO) with Ca or Ba offers a promising solution to overcome these challenges, yet its effects remain critically underexplored. A systematic study of doping Ca into SAO is presented, optimizing the pulsed laser deposition (PLD) conditions, and adjusting the supporting polymer type and thickness, demonstrating that strain engineering can effectively eliminate these imperfections. Using SrTiO3 as a case study, it is found that Ca1.5Sr1.5Al2O6 offers a near‐perfect match and a defect‐free freestanding membrane. This approach, using the water‐soluble Bax/CaxSr3‐xAl2O6 family, paves the way for producing high‐quality, large freestanding membranes for functional oxide devices.

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Self‐Rolling‐Up Enabled Ultrahigh‐Density Information Storage in Freestanding Single‐Crystalline Ferroic Oxide Films (Adv. Funct. Mater. 20/2023)

Cited by 3 publications

References 0 publications

Freestanding Perovskite Oxide Membranes: A New Playground for Novel Ferroic Properties and Applications

Freestanding Perovskite Oxide Membranes: A New Playground for Novel Ferroic Properties and Applications

Self‐Rolled‐Up Ultrathin Single‐Crystalline Silicon Nanomembranes for On‐Chip Tubular Polarization Photodetectors

Strain Engineering: Perfecting Freestanding Perovskite Oxide Fabrication

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