Pseudo spin-valve on plastic substrate as sensing elements of mechanical strain

Anwarzai, B.; Áč, V.; Luby, Š.; Majková, E.; Senderak, R.

doi:10.1016/j.vacuum.2009.04.070

Cited by 16 publications

(4 citation statements)

References 13 publications

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“…The field of flexible systems is potentially very wide since it is conceivable that most of the technologies developed on conventional substrates can be transferred to stretchable or flexible substrates. Since the 2000's the vast majority of studies have focused on magneto-resistive systems [85,101,123,[165][166][167][168][169][170]. This is why these GMR or TMR based systems have now reached a certain maturity [26,146].…”

Section: Functional Stretchable/flexible Magnetic Systems and Perspec...mentioning

confidence: 99%

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

Zighem

Faurie

2021

J. Phys.: Condens. Matter

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This paper provides a topical review of work on systems based on magnetic nanostructured thin films on polymer substrates. This topic has indeed experienced a significant growth in the last ten years. Several studies show a strong potential of these systems for a number of applications requiring functionalities on non-planar surfaces. However, the deformations necessary for this type of applications are likely to modify their magnetic properties, and the relationships between strain fields, potential damages and functional properties must be well understood. This review focuses both on the development of techniques dedicated to this research, on the synthesis of the experimental results obtained over the last ten years and on the perspectives related to stretchable or flexible magnetoelectric systems. In particular, the article focuses on the links between magnetic behavior and the strain field developing during the whole history of these systems (elaboration, reversible and irreversible loading).

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Section: Functional Stretchable/flexible Magnetic Systems and Perspec...mentioning

confidence: 99%

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

Zighem

Faurie

2021

J. Phys.: Condens. Matter

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“…Recently, bendable and flexible materials have attracted increasing attention because of their potential applicability in wearable electronics and sensors [21], soft robots [22], lightemitting devices [23], and flexible solar cells [24]. Mechanical strain sensing can be applied to conventional spintronic devices [6,[25][26][27]. Additionally, TMR [28][29][30] and AMR [1,3] sensors can be fabricated on deformable substrates.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Amorphous Ta/CoFeB/MgO/Ta Thin Films on Deformable Substrates with Magnetic Field Angle and Tensile Strain

Jun,

Hwang,

Kang

et al. 2023

Sensors

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Recently, the application of cobalt iron boron (CoFeB) thin films in magnetic sensors has been widely studied owing to their high magnetic moment, anisotropy, and stability. However, most of these studies were conducted on rigid silicon substrates. For diverse applications of magnetic and angle sensors, it is important to explore the properties of ferromagnetic thin films grown on nonrigid deformable substrates. In this study, representative deformable substrates (polyimide (PI), polyethylene naphthalate (PEN), and polydimethylsiloxane (PDMS)), which can be bent or stretched, were used to assess the in-plane magnetic field angle-dependent properties of amorphous Ta/CoFeB/MgO/Ta thin films grown on deformable substrates. The effects of substrate roughness, tensile stress, deformable substrate characteristics, and sputtering on magnetic properties, such as the coercive field (Hc), remanence over saturation magnetization (Mr/Ms), and biaxial characteristics, were investigated. This study presents an unconventional foundation for exploring deformable magnetic sensors capable of detecting magnetic field angles.

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“…The resistance of the SPVs is affected by the spin states of electrons controlled by the magnetic field ( H ) . Ferromagnetic electrodes in pseudo-SPVs are composed of different FMs or their alloys, such as Co, Ni, NiFe, and CoFe . A ferromagnetic electrode with high spin polarization is critical to achieve electronic transport in multifunctional spintronic devices .…”

Section: Introductionmentioning

confidence: 99%

Manipulation of Magnetic Properties and Magnetoresistance in Co/Cu/γ′-Fe₄N/Mica Flexible Spin Valves via External Mechanical Strains

Chen

Shi

Zhang

et al. 2022

ACS Appl. Electron. Mater.

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The strain-tailored magnetic and electronic transport properties in flexible spin valves (SPVs) have attracted attention due to their practical applications in flexible spintronic devices. Here, magnetic and spin-dependent electronic transport properties of Co/Cu/γ′-Fe4N/mica flexible SPVs are investigated. The strain-induced change ratio of magnetoresistance (MR) is 49% in Co(4.8 nm)/Cu(7.5 nm)/γ′-Fe4N(11.0 nm) flexible SPVs. The magnetic properties of Co(4.8 nm)/Cu(7.5 nm)/γ′-Fe4N(7.9 nm) flexible SPVs show mechanical stability at bending strains. The magnetic properties of flexible SPVs did not deteriorate after 100 times of bending and 60 h of bending. As the Co layer thickness decreases from 7.2 to 2.4 nm, the sign of MR changes from negative to positive. A negative MR appears due to the opposite scattering spin asymmetry coefficients between Co/Cu and γ′-Fe4N/Cu interfaces. A positive MR arises from the same scattering spin asymmetry coefficients at Co/Cu and γ′-Fe4N/Cu interfaces or magnetization misalignments between Co and γ′-Fe4N layers. Additionally, the MR is a combination of an anisotropy magnetoresistance and a giant magnetoresistance effect, which has been confirmed by MR–H curves with different measurement configurations (H in‑plane∥I, H in‑plane⊥I and H out‑of‑plane⊥I) and M–H curves. The M–H curves show that the magnetization of γ′-Fe4N reverses before that of the Co layer.

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Pseudo spin-valve on plastic substrate as sensing elements of mechanical strain

Cited by 16 publications

References 13 publications

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

Magnetic Properties of Amorphous Ta/CoFeB/MgO/Ta Thin Films on Deformable Substrates with Magnetic Field Angle and Tensile Strain

Manipulation of Magnetic Properties and Magnetoresistance in Co/Cu/γ′-Fe₄N/Mica Flexible Spin Valves via External Mechanical Strains

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Pseudo spin-valve on plastic substrate as sensing elements of mechanical strain

Cited by 16 publications

References 13 publications

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

A review on nanostructured thin films on flexible substrates: links between strains and magnetic properties

Magnetic Properties of Amorphous Ta/CoFeB/MgO/Ta Thin Films on Deformable Substrates with Magnetic Field Angle and Tensile Strain

Manipulation of Magnetic Properties and Magnetoresistance in Co/Cu/γ′-Fe4N/Mica Flexible Spin Valves via External Mechanical Strains

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Product

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About

Manipulation of Magnetic Properties and Magnetoresistance in Co/Cu/γ′-Fe₄N/Mica Flexible Spin Valves via External Mechanical Strains