Flexible heat-flow sensing sheets based on the longitudinal spin Seebeck effect using one-dimensional spin-current conducting films

Kirihara, Akihiro; Kondo, Koichi; Ishida, Masahiko; Ihara, Kazuki; Iwasaki, Yuma; Someya, Hiroko; Matsuba, Asuka; Uchida, K.; Saitoh, Eiji; Yamamoto, Naoharu; Kohmoto, Shigeru; Murakami, Tomoo

doi:10.1038/srep23114

Cited by 69 publications

(55 citation statements)

References 43 publications

(54 reference statements)

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“…Recently, we demonstrated the construction of a LSSEbased flexible thermoelectric sheet [106]. To construct the flexible LSSE device, we used spray-coating technique called "ferrite plating" [214,215], which enables the fabrication of ferrimagnetic ferrite thin films.…”

Section: B Flexible Spin Seebeck Devicesmentioning

confidence: 99%

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Thermoelectric Generation Based on Spin Seebeck Effects

et al. 2016

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The spin Seebeck effect (SSE) refers to the generation of a spin current as a result of a temperature gradient in magnetic materials including insulators. The SSE is applicable to thermoelectric generation because the thermally generated spin current can be converted into a charge current via spin-orbit interaction in conductive materials adjacent to the magnets. The insulator-based SSE device exhibits unconventional characteristics potentially useful for thermoelectric applications, such as simple structure, device-design flexibility, and convenient scaling capability. In this article, we review recent studies on the SSE from the viewpoint of thermoelectric applications. Firstly, we introduce the thermoelectric generation process and measurement configuration of the SSE, followed by showing fundamental characteristics of the SSE device. Secondly, a theory of the thermoelectric conversion efficiency of the SSE device is presented, which clarifies the difference between the SSE and conventional thermoelectric effects and the efficiency limit of the SSE device. Finally, we show preliminary demonstrations of the SSE in various device structures for future thermoelectric applications and discuss prospects of the SSE-based thermoelectric technologies.

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Section: B Flexible Spin Seebeck Devicesmentioning

confidence: 99%

“…1(d)]. To exploit the above characteristics of the LSSE device, versatile and low-cost fabrication methods have been developed, such as coating [43] and plating [106] technologies [ Fig. 1(e)].…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Generation Based on Spin Seebeck Effects

et al. 2016

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“…sensors, owing to their flexible structures and lower thermal resistance 5 . STE devices utilize the spin-Seebeck effect (SSE) [6][7][8][9][10] and the anomalous Nernst effect (ANE) [11][12][13] .…”

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confidence: 99%

Machine-learning guided discovery of a new thermoelectric material

Iwasaki

Takeuchi

Stanev

et al. 2019

Sci Rep

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Thermoelectric technologies are becoming indispensable in the quest for a sustainable future. Recently, an emerging phenomenon, the spin-driven thermoelectric effect (STE), has garnered much attention as a promising path towards low cost and versatile thermoelectric technology with easily scalable manufacturing. However, progress in development of STE devices is hindered by the lack of understanding of the fundamental physics and materials properties responsible for the effect. In such nascent scientific field, data-driven approaches relying on statistics and machine learning, instead of more traditional modeling methods, can exhibit their full potential. Here, we use machine learning modeling to establish the key physical parameters controlling STE. Guided by the models, we have carried out actual material synthesis which led to the identification of a novel STE material with a thermopower an order of magnitude larger than that of the current generation of STE devices.

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“…The possibility to control and manipulate magnetic processes by thermal means offers a high potential for application. Furthermore the finding of ways to reinvest waste heat is one of the major challenges towards green energy techniques 4,5 . The spin Seebeck effect is one of the most fascinating phenomena in this research area.…”

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confidence: 99%

Damping of parametrically excited magnons in the presence of the longitudinal spin Seebeck effect

et al. 2017

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The impact of the longitudinal spin Seebeck effect (LSSE) on the magnon damping in magneticinsulator/nonmagnetic-metal bilayers was recently discussed in several reports. However, results of those experiments can be blurred by multimode excitation within the measured linewidth. In order to avoid possible intermodal interference, we investigated the damping of a single magnon group in a platinum covered Yttrium Iron Garnet (YIG) film by measurement of the threshold of its parametric excitation. Both dipolar and exchange spin-wave branches were probed. It turned out that the LSSE-related modification of spin-wave damping in a micrometer-thick YIG film is too weak to be observed in the entire range of experimentally accessible wavevectors. At the same time, the change in the mean temperature of the YIG layer, which can appear by applying a temperature gradient, strongly modifies the damping value.

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Flexible heat-flow sensing sheets based on the longitudinal spin Seebeck effect using one-dimensional spin-current conducting films

Cited by 69 publications

References 43 publications

Thermoelectric Generation Based on Spin Seebeck Effects

Thermoelectric Generation Based on Spin Seebeck Effects

Machine-learning guided discovery of a new thermoelectric material

Damping of parametrically excited magnons in the presence of the longitudinal spin Seebeck effect

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