›› 2015, Vol. 24 ›› Issue (4): 47202-047202.doi: 10.1088/1674-1056/24/4/047202

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

刘义a b, 李海金a b   

  1. a School of Mathematics and Physics, Anhui University of Technology, Ma'anshan 243032, China;
    b Institute of Optoelectronic Information Materials and Technologies, Anhui University of Technology, Ma'anshan 243032, China
  • 收稿日期:2014-09-21 修回日期:2014-11-07 出版日期:2015-04-05 发布日期:2015-04-05
  • 基金资助:
    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).

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

Liu Yi (刘义)a b, Li Hai-Jin (李海金)a b   

  1. a School of Mathematics and Physics, Anhui University of Technology, Ma'anshan 243032, China;
    b Institute of Optoelectronic Information Materials and Technologies, Anhui University of Technology, Ma'anshan 243032, China
  • Received:2014-09-21 Revised:2014-11-07 Online:2015-04-05 Published:2015-04-05
  • Contact: Liu Yi E-mail:yliu6@ahut.edu.cn
  • Supported by:
    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).

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摘要： Mn substitution compounds YCo1-xMnxO3 (0≤ x ≤ 0.2) are synthesized by using the sol-gel process. Electrical transport properties of YCo1-xMnxO3 are investigated in the temperature range from 200 K to 780 K. The experimental results show that after Mn substitution the electrical resistivity of YCo1-xMnxO3 first increases, then decreases, which is due to the electrons introduced by Mn doping. The sign of Seebeck coefficient for YCo1-xMnxO3 (x ≠ 0) is positive or negative, which is also proved by the Hall coefficient measurement. Moreover, at about room temperature, the Seebeck coefficient of YCo1-xMnxO3 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.

关键词: perovskite cobalt oxides, sol-gel process, electrical transport

Abstract: Mn substitution compounds YCo1-xMnxO3 (0≤ x ≤ 0.2) are synthesized by using the sol-gel process. Electrical transport properties of YCo1-xMnxO3 are investigated in the temperature range from 200 K to 780 K. The experimental results show that after Mn substitution the electrical resistivity of YCo1-xMnxO3 first increases, then decreases, which is due to the electrons introduced by Mn doping. The sign of Seebeck coefficient for YCo1-xMnxO3 (x ≠ 0) is positive or negative, which is also proved by the Hall coefficient measurement. Moreover, at about room temperature, the Seebeck coefficient of YCo1-xMnxO3 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.

Key words: perovskite cobalt oxides, sol-gel process, electrical transport

中图分类号:  (Thermoelectric and thermomagnetic effects)

  • 72.20.Pa
72.80.Ga (Transition-metal compounds) 61.05.cp (X-ray diffraction)