| 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 |
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| ABSTRACT |
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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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