Micron‐scale wedge thin films prepared by plasma enhanced chemical vapor deposition

López-Santos, Maria-Carmen; Álvarez, Rafael; Palmero, Alberto; Borrás, Ana; Campo, Rafael Casquel del; Holgado, Miguel; González‐Elipe, Agustín R.

doi:10.1002/ppap.201700043

Cited by 3 publications

(2 citation statements)

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“…Based on the model of the fabricated spiral, an average thickness gradient of −5.3 nm/μm is obtained in this way (see section S2 in the Supporting Information). In 2D films, thickness gradients are often achieved using moving shutters , or plasma-enhanced chemical vapor deposition methods, which create wedge thin films on a scale of tens of micrometers to millimeters. Thus, the highly spatially varying thickness gradients achieved with 3D nanopatterning present a powerful advantage of this 3D fabrication procedure.…”

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confidence: 99%

Domain Wall Automotion in Three-Dimensional Magnetic Helical Interconnectors

et al. 2022

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The fundamental limits currently faced by traditional computing devices necessitate the exploration of ways to store, compute, and transmit information going beyond the current CMOS-based technologies. Here, we propose a three-dimensional (3D) magnetic interconnector that exploits geometry-driven automotion of domain walls (DWs), for the transfer of magnetic information between functional magnetic planes. By combining state-of-the-art 3D nanoprinting and standard physical vapor deposition, we prototype 3D helical DW conduits. We observe the automotion of DWs by imaging their magnetic state under different field sequences using X-ray microscopy, observing a robust unidirectional motion of DWs from the bottom to the top of the spirals. From experiments and micromagnetic simulations, we determine that the large thickness gradients present in the structure are the main mechanism for 3D DW automotion. We obtain direct evidence of how this tailorable magnetic energy gradient is imprinted in the devices, and how it competes with pinning effects that are due to local changes in the energy landscape. Our work also predicts how this effect could lead to high DW velocities, reaching the Walker limit during automotion. This work demonstrates a possible mechanism for efficient transfer of magnetic information in three dimensions.

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confidence: 99%

Domain Wall Automotion in Three-Dimensional Magnetic Helical Interconnectors

et al. 2022

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“…Based on the model of the fabricated spiral, an average thickness gradient of -5.3 nm/µm is obtained in this way (see Supplementary Information S2). In 2D films, thickness gradients are often achieved using moving shutters 30,31 or plasma enhanced chemical vapor deposition methods 32 which create wedge thin films on a scale of tens of microns to millimeters. Thus, the highly localized thickness gradients achieved with 3D nanopatterning present a powerful advantage of this three-dimensional fabrication procedure.…”

mentioning

confidence: 99%