Electrical transport properties of YCo1-xMnxO3 (0≤ x ≤ 0.2) prepared by sol-gel process

doi:10.1088/1674-1056/24/4/047202

Abstract Mn substitution compounds YCo_1-xMn_xO₃ (0≤ x ≤ 0.2) are synthesized by using the sol-gel process. Electrical transport properties of YCo_1-xMn_xO₃ are investigated in the temperature range from 200 K to 780 K. The experimental results show that after Mn substitution the electrical resistivity of YCo_1-xMn_xO₃ first increases, then decreases, which is due to the electrons introduced by Mn doping. The sign of Seebeck coefficient for YCo_1-xMn_xO₃ (x ≠ 0) is positive or negative, which is also proved by the Hall coefficient measurement. Moreover, at about room temperature, the Seebeck coefficient of YCo_1-xMn_xO₃ with 1% doping Mn content becomes a negative value, whose absolute value is maximum; furthermore, the absolute value gradually decreases with increasing the Mn substitution content, which can be explained by the double carrier model.

Keywords: perovskite cobalt oxides sol-gel process electrical transport

Received: 21 September 2014
Revised: 07 November 2014
Accepted manuscript online:

PACS:	72.20.Pa	(Thermoelectric and thermomagnetic effects)
	72.80.Ga	(Transition-metal compounds)
	61.05.cp	(X-ray diffraction)

Fund: Project supported by the Anhui Provincial Science Key Foundation of Higher Education Institutions, China (Grant No. KJ2011A053) and the National Natural Science Foundation of China (Grant No. 51202005).

Corresponding Authors: Liu Yi
E-mail: yliu6@ahut.edu.cn

Cite this article:

Liu Yi (刘义), Li Hai-Jin (李海金) Electrical transport properties of YCo_1-xMn_xO₃ (0≤ x ≤ 0.2) prepared by sol-gel process 2015 Chin. Phys. B 24 047202

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Electrical transport properties of YCo1-xMnxO3 (0≤ x ≤ 0.2) prepared by sol-gel process

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Electrical transport properties of YCo_1-xMn_xO₃ (0≤ x ≤ 0.2) prepared by sol-gel process