Electrical Transport Properties of Nb and Ga Double Substituted Fe2VAl Heusler Compounds


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In this work the results of studying the electrical transport properties of Fe2V1 –xNbxAl1 –yGay (0.1 ≤ x ≤ 0.2 and 0.1 ≤ y ≤ 0.2) are presented. The specimens were fabricated using conventional arc-melting method followed by ball milling and spark plasma sintering. It was shown that dual-site substitution approach may lead to a more noticeable changes in the Seebeck coefficient and the electrical resistivity comparing to single-site substitution. Since such substitution can be assumed as isovalent one, the evolution of the electrical transport properties was mainly attributed to the changes in the band gap and charge carrier mobility values. To testify applicability of computational methods on these samples we have used well-known density functional theory and Boltzmann transport equation solving on one of the samples.

作者简介

A. Voronin

National University of Science and Technology MISIS

编辑信件的主要联系方式.
Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

I. Serhiienko

National University of Science and Technology MISIS

Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

Ye. Ashim

National University of Science and Technology MISIS

Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

V. Kurichenko

National University of Science and Technology MISIS

Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

A. Novitskii

National University of Science and Technology MISIS

Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

T. Inerbaev

Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences; Gumilyov Eurasian National University

Email: voronin@misis.ru
俄罗斯联邦, Novosibirsk, 630090; Nur-Sultan, 010000

R. Umetsu

Institute for Materials Research, Tohoku University

Email: voronin@misis.ru
日本, Sendai, 980-8578

V. Khovaylo

National University of Science and Technology MISIS

Email: voronin@misis.ru
俄罗斯联邦, Moscow, 119049

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