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Electrical Properties of Orthorhombic Iron Disilicide

Published online by Cambridge University Press:  10 February 2011

Jun-Ichi Tani  and
Hiroyasu Kido
Jun-Ichi Tani
Affiliation:
Department of Inorganic Chemistry, Osaka Municipal Technical Research Institute, 1–6–50 Morinomiya, Joto-ku, Osaka 536–8553, Japan, tani@omtri.city.osaka.jp
Hiroyasu Kido
Affiliation:
Department of Inorganic Chemistry, Osaka Municipal Technical Research Institute, 1–6–50 Morinomiya, Joto-ku, Osaka 536–8553, Japan, tani@omtri.city.osaka.jp
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Abstract

In order to clarify the electrical properties of Cr-doped β-FeSi2(Fe1-xCrxSi2) and Mn-doped β--FeSi2(Fel-yMnySi2), the Hall effect and electrical resistivity of Fe1-xCrxSi2(0.01 ≦ x ≦ 0.05) and Fel-yMnySi2(0.01 ≦ y ≦ 0.10) have been measured in the temperature range between 80 and 300 K. fhe solid solutions Fel-xCrxSi2and Fel-yMnySi2are p-type over the measured temperature range. The observed features of RH of these solid solutions are explained by using the two-band model with the existence of two acceptor levels. The hole concentration of Fe1-xCrxSi2at 300 K ranges from 8.9×1018cm−3for x=0.01 to 1.1×1020cm−3for x=0.05, which is one order of magnitude higher than that of Fel-yMnySi2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 545: Symposium Z – Thermoelectric Materials 1998 - The Next Generation… , 1998 , 161
Copyright
Copyright © Materials Research Society 1999

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