Anisotropy of the thermopower in higher silicide of transitions metals
- 作者: Kusnetsova V.1,2, Zaitsev V.1, Solomkin F.1, Novikov S.1
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隶属关系:
- Ioffe Institute
- St. Petersburg Academic University
- 期: 卷 51, 编号 8 (2017)
- 页面: 972-975
- 栏目: XV International Conference “Thermoelectrics and Their Applications—2016”, St. Petersburg, November 15–16, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/200685
- DOI: https://doi.org/10.1134/S1063782617080188
- ID: 200685
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详细
A new technique for measuring the thermopower anisotropy using polycrystals on the basis of repeated measurements of an array of randomly oriented microcrystals and statistical analysis of the data obtained is proposed. The thermopower anisotropy of a series of higher silicides of transition metals (β-FeSi2, doped MnSi1.75, ReSi1.75, and CrSi2) is measured using polycrystals. It is found that, in β-FeSi2 crystals, a very high thermopower anisotropy can be observed; in ReSi1.75 crystals, the thermopower can have different signs; and, in CrSi2, the absolute value of the thermopower depends heavily on the heat-treatment mode. The temperature dependences of the electrical conductivity and thermopower of CrSi2 needles are measured. The thermopower anisotropy in CrSi2 needles, as in bulk single crystals, is retained in a wide temperature range.
作者简介
V. Kusnetsova
Ioffe Institute; St. Petersburg Academic University
编辑信件的主要联系方式.
Email: vicha_110901@mail.ru
俄罗斯联邦, St. Petersburg, 194021; St. Petersburg, 194021
V. Zaitsev
Ioffe Institute
Email: vicha_110901@mail.ru
俄罗斯联邦, St. Petersburg, 194021
F. Solomkin
Ioffe Institute
Email: vicha_110901@mail.ru
俄罗斯联邦, St. Petersburg, 194021
S. Novikov
Ioffe Institute
Email: vicha_110901@mail.ru
俄罗斯联邦, St. Petersburg, 194021