Direct method for magnetostriction coefficient measurement based on atomic force microscope, illustrated by the example of Tb–Co film

Lima, Bruno Marco de; Maximino, Fabio Lombardi; Santos, Josemir Coelho; Santos, Amilton M.

doi:10.1016/j.jmmm.2015.07.079

Cited by 7 publications

(3 citation statements)

References 17 publications

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“…Permanent magnets can be used to initiate a constant magnetic flux and avoid the influence of unipolar MR characteristics. Alternatively, a sensing chip based on the Hall effect can be implemented for non-contact torque measurement to interpret magnetic inductance variations as output voltage [309], [310].…”

Section: Magnetostrictive (Mr) Strain Sensorsmentioning

confidence: 99%

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Hamed,

O’Donnell,

Lishchenko

et al. 2023

IEEE Sensors J.

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In the era of digitalization, there is a huge focus on capturing data from manufacturing processes and systems. Since the promotion of Industry 4.0, the industrial marketplace has been crowded with solution providers who excel in capturing and aggregating data on the cloud and presenting it on dashboards. From machine states to production targets, this type of data has become more readily available from tools, controllers, switches, and factory bus systems. As the industry pushes deeper into the machine for information and aspires to have smart machines that can feel and react to experiences during the manufacturing process, then more sophisticated technology is necessary. Strain sensor technology is a logical measurement principle to address this challenge for many industrial sectors. For researchers and industrialists to progress toward the smart machine agenda, there must be a firm grasp of the "technology-solution fit," i.e., what strain technology could provide the most appropriate solution. This paper presents a review of the state of the art in strain sensors that are foreseen as frontrunners to enable next-generation smart components and intelligent tools. The review focuses on industrial strain sensing technologies that are at a mature place on the technology readiness levels (TRLs) and present themselves as highly practical solutions for smart components and digitized machines, considering sensitivity, powered or passive, wired or wireless, and robustness. Through this review, researchers and industrialists will have a suite of solutions to move on with their innovative designs of smart machines based on embedded strain sensor technology.

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Section: Magnetostrictive (Mr) Strain Sensorsmentioning

confidence: 99%

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Hamed,

O’Donnell,

Lishchenko

et al. 2023

IEEE Sensors J.

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“…Early studies have employed conventional AFM imaging for magnetostriction measurements on metallic wires [30,31]. More recently, it has successfully been demonstrated for thin film magnetostriction by measuring the tip deflection of micromachined macro-cantilevers (a few millimetres to centimetres in size), coated with Fe, Ni, Co and Tb based magnetostrictive films [32,33]. In a related approach for dynamic force microscopy in liquid environments, the AFM probes (with micro-cantilevers a few µm in size) have been directly coated with 50 nm films of magnetostrictive Fe-B-N, to drive their mechanical oscillation [34].…”

Section: Introductionmentioning

confidence: 99%

Measurement of thin film magnetostriction using field-dependent atomic force microscopy

Coı̈sson

Hüttenes

Cialone

et al. 2020

Applied Surface Science

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An AFM cantilever coated with a magnetostrictive film constitutes a bimorph reacting to an applied magnetic field. Attractive interactions between the cantilever tip and a flat surface, of adhesion and capillary origin, allow the AFM to react and keep the cantilever deflection constant by displacing the piezoelectric scanner. A suitable model of the forces acting on the cantilever allows to extract the magnetostriction constant of the coating film.

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“…Nestes últimos, normalmente um material magnetostrictivo é aderido ou colado a uma fibra óptica (NAZARÉ, et al, 2014 (LIMA, et al, 2015) 1.3.…”

Section: Justificativaunclassified

Modelagem e fabricação de modulador em óptica integrada baseado em filme magnetostrictivo para aplicação como magnetômetro.

Lima¹

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The doctoral work aims are the development and simulation of an optical modulator based on the effect of magnetostriction for application as magnetometer. The multiphysics simulations were performed using the Finite Elements Method (FEM). In the manufacturing process of optical modulator integrated optics techniques were applied. The originality of the proposal is based on the construction of an integrated optical waveguide covered by a magnetostrictive film to allow the modulation of the guided wave, through the elasto-optical effect, by the application of external magnetic fields. The applied magnetic field causes deformation of the magnetostrictive material that induces a modification of the stress profile produced in substrate.The substrate has its optical properties altered due to the elasto-optical effect, which causes changes in the properties of transmitted light. The work begins with the study and characterization of Tb25Fe75 and Tb23Co77 magnetostrictive films deposited by sputtering on silicon substrates. A method for sample preparation and measurement of magnetostriction was established. The magnetostrictive coefficient of the films was determined from the direct measurement of displacements of samples by AFM technique for magnetic fields applied. The experimental results obtained allowed to perform MEF simulations to verify the light guided modes generated by the profile of thermally induced stress created by deposition process of magnetostrictive film on B12GeO4 (BGO) substrate. It was also modeled and simulated the effect of the application of magnetic field on the optical guide obtained initially by the effect of thermal stress. In simulation results, it was possible to verify the changes of effective refractive index and optical intensity of guided modes as functions of magnetic fields applied to the modulator. At the end of the work, some prototypes were fabricated. The results of characterizations of the built modulators will allow, in the future, adjustments in simulation models.

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Direct method for magnetostriction coefficient measurement based on atomic force microscope, illustrated by the example of Tb–Co film

Cited by 7 publications

References 17 publications

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Strain Sensing Technology to Enable Next-Generation Industry and Smart Machines for the Factories of the Future: A Review

Measurement of thin film magnetostriction using field-dependent atomic force microscopy

Modelagem e fabricação de modulador em óptica integrada baseado em filme magnetostrictivo para aplicação como magnetômetro.

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