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J. Korean Ceram. Soc. > Volume 39(9); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(9): 878.
doi: https://doi.org/10.4191/kcers.2002.39.9.878
n=3인 Ruddlesden-Popper형 La2.1Sr1.9Mn3O10 세라믹스의 Small polaron Hopping 전도 (II)
정우환, 이준형1, 손정호2
호원대학교 전기전자정보공학부
1경북대학교 무기재료공학과
2가야대학교 보석신소재공학과
Small Polaron Hopping Conduction of n=3 Ruddlesden-Popper Compound La2.1Sr1.9Mn3O10 System (II)
Woo-Hwan Jung, Joon-Hyung Lee1, Jeong-Ho Sohn2
Division of Electrical, Electronic and Information Engineering, Howon University
1Department of Inorganic Materials Engineering, Kyungpook National University
2School of Gem and New Materials Engineering, Kaya University
ABSTRACT
Electrical resistivity and thermoelectric power measurements on Mn-based $La_{2.1}Sr_{1.9}Mn_3O_{10}$ with layered perovskite structure as functions of temperature are presented. The experimental results demonstrate that the electronic transport in $La_{2.1}Sr_{1.9}Mn_3O_{10}$ is well described by the Emin-Holstein adiabatic small polaron model. The thermoelectric power data in the small polaron regime above Curie temperature is nearly equal to that predicted by nominal $Mn^{4+}$ valence arguments. This indicates that transport involves small polaron hopping.
Key words: Adiabatic, Non-adiabatic, Hikes formula, Small polaron, Thermoelectric power
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