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Large Spin-Dependent Thermoelectric Effects in NiFe-based Interconnected Nanowire Networks.

ABSTRACT: NiFe alloy and NiFe/Cu multilayered nanowire (NW) networks were grown using a template-assisted electrochemical synthesis method. The NiFe alloy NW networks exhibit large thermopower, which is largely preserved in the current perpendicular-to-plane geometry of the multilayered NW structure. Giant magneto-thermopower (MTP) effects have been demonstrated in multilayered NiFe/Cu NWs with a value of 25% at 300 K and reaching 60% around 100 K. A large spin-dependent Seebeck coefficient of -12.3 ?V/K was obtained at room temperature. The large MTP effects demonstrate a magnetic approach to control thermoelectric properties of flexible devices based on NW networks.

SUBMITTER: Marchal N

PROVIDER: S-EPMC7324447 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Large Spin-Dependent Thermoelectric Effects in NiFe-based Interconnected Nanowire Networks.

Marchal Nicolas N da Câmara Santa Clara Gomes Tristan T Abreu Araujo Flavio F Piraux Luc L

Nanoscale research letters 20200629 1

NiFe alloy and NiFe/Cu multilayered nanowire (NW) networks were grown using a template-assisted electrochemical synthesis method. The NiFe alloy NW networks exhibit large thermopower, which is largely preserved in the current perpendicular-to-plane geometry of the multilayered NW structure. Giant magneto-thermopower (MTP) effects have been demonstrated in multilayered NiFe/Cu NWs with a value of 25% at 300 K and reaching 60% around 100 K. A large spin-dependent Seebeck coefficient of -12.3 μV/K ...[more]

PMID: 32602034

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