Unraveling the role of magnetic anisotropy on the thermoelectric response: a theoretical and experimental approach

Corrêa, M.A.; Gamino, M.; Melo, A.S.; Lopes, Marcus Vinícius Pinheiro; Santos, J.G.S.; Souza, A. L. R.; Junior, S.A.N. França; Ferreira, Armando; Lanceros‐Méndez, S.; Vaz, F.; Bohn, F.

doi:10.1088/1361-6463/ac29e4

Cited by 3 publications

(2 citation statements)

References 34 publications

(61 reference statements)

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“…Taking

as a function of

, it is possible to estimate

. Experimentally, the

value can be calculated through [ 55 , 56 ]

where

is the temperature difference in the ribbon, which is related to

through

in which

and

are the thermal conductivity of the substrate (glass) and of the ribbon, respectively, and

and

are the thickness of the substrate and ribbon.…”

Section: Results and Discussionmentioning

confidence: 99%

Anomalous Nernst Effect in Flexible Co-Based Amorphous Ribbons

Corrêa

Ferreira

Souza

et al. 2023

Sensors

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Fe3Co67Cr3Si15B12 ribbons with a high degree of flexibility and excellent corrosion stability were produced by rapid quenching technique. Their structural, magnetic, and thermomagnetic (Anomalous Nernst Effect) properties were studied both in an as-quenched (NR) state and after stress annealing during 1 h at the temperature of 350∘C and a specific load of 230 MPa (AR). X-ray diffraction was used to verify the structural characteristics of our ribbons. Static magnetic properties were explored by inductive technique and vibrating sample magnetometry. The thermomagnetic curves investigated through the Anomalous Nernst Effect are consistent with the obtained magnetization results, presenting a linear response in the thermomagnetic signal, an interesting feature for sensor applications. Additionally, Anomalous Nernst Effect coefficient SANE values of 2.66μV/K and 1.93μV/K were estimated for the as-quenched and annealed ribbons, respectively. The interplay of the low magnetostrictive properties, soft magnetic behavior, linearity of the thermomagnetic response, and flexibility of these ribbons place them as promising systems to probe curved surfaces and propose multifunctional devices, including magnetic field-specialized sensors.

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“…Taking

as a function of

, it is possible to estimate

. Experimentally, the

value can be calculated through [ 55 , 56 ]

where

is the temperature difference in the ribbon, which is related to

through

in which

and

are the thermal conductivity of the substrate (glass) and of the ribbon, respectively, and

and

are the thickness of the substrate and ribbon.…”

Section: Results and Discussionmentioning

confidence: 99%

Anomalous Nernst Effect in Flexible Co-Based Amorphous Ribbons

Corrêa

Ferreira

Souza

et al. 2023

Sensors

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“…Figure 3 shows the resonance frequency f r as a function of the magnetic field H for our set of samples acquired from the MI experiments. The results are achieved by fitting the ∆R curves, using a similar procedure employed in [40]. The best fit obtained using equation (1) takes into account the H k values found from the quasi-static magnetic characterization, and brings information on 4πM eff of the bilayers [26,27].…”

Section: Resultsmentioning

confidence: 99%

Assessing the relaxation mechanisms contributions on magnetoimpedance effect in YIG/W bilayers

Santos¹,

Silva²,

Gamino³

et al. 2022

J. Phys. D: Appl. Phys.

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Damping parameter plays a key role in the magnetization dynamics of ferri/ferromagnetic materials with potential technological applications. Experimentally the damping parameter can be estimated from the linewidth of the ferromagnetic resonance experiment, which is altered by distinct mechanisms associated with extrinsic contributions, such as spin pumping and two-magnon scattering mechanisms. Here we perform a systematic investigation of the magnetization dynamics through magnetoimpedance eﬀect in Y5Fe3O12(tYIG)/W(100 nm) bilayers having tYIG between 25 and 125 nm. By modifying the YIG thickness, we explore the contributions of such extrinsic mechanisms to αeff. From the structural features, quasi-static magnetic properties, and ferromagnetic resonance results, we interpret our ﬁndings for the magnetization dynamics. Our results disclose that the bilayer structure allows us to explore the magnetoimpedance eﬀect in a wide range of frequency and magnetic ﬁelds, providing insights on the eﬀective damping parameter.

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