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Electrical transport properties of single-crystalline Mn–Zn ferrous ferrite

Published online by Cambridge University Press:  26 November 2012

Yong-Chae Chung  and
Han-Ill Yoo
Yong-Chae Chung*
Affiliation:
Department of Inorganic Materials Engineering, Hanyang University, Seoul, 133–791, Korea
Han-Ill Yoo
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul, 151–742, Korea
*
a)Address correspondence to this author. e-mail: [email protected]
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Abstract

Electrical transport properties, electrical conductivity, and thermoelectric power of a single-crystalline Mn0.45Zn0.43Fe2.12O4 were measured as functions of temperature in the range of 25 to 1000 °C. According to the small polaron hopping model, the values of the activation energy for small polaron hopping (EH) were obtained from the conductivity data in three different temperature regions: 0.032 eV for T < TC, 0.12 eV for TC < T < 600 °C, and 0.25 eV for 600 °C < T < 1000 °C. The behavior of conductivity and thermoelectric power data above TC is discussed in connection with cation redistribution.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 3 , March 2001 , pp. 774 - 777
Copyright
Copyright © Materials Research Society 2001

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