Non-adiabatic small polaron hopping conduction in Gd1/3Sr2/3FeO3
作者： Woo-Hwan Jung
DOI: 10.1016/S0167-577X(02)00856-X
关键词: Materials science 、 Polaron 、 Condensed matter physics 、 Charge ordering 、 Arrhenius equation 、 Thermal conduction 、 Variable-range hopping 、 Electrical resistivity and conductivity 、 Adiabatic process 、 Seebeck coefficient
摘要: Abstract The transport properties of Gd1/3Sr2/3FeO3 have been studied carefully by using resistivity and thermoelectric power. Interestingly, a small polaron hopping model Emin Holstein is found to fit the data above 200 K, high temperature region followed non-adiabatic conduction mechanism. At temperatures, significant difference between activation energy deduced from electrical ρ(T) power α(T), characteristic polaron, observed.
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sci-hub.se 参考文章(23)
W. H. Jung, H. Wakai, H. Nakatsugawa, E. Iguchi, Small polarons in La2/3TiO3−δ Journal of Applied Physics. ,vol. 88, pp. 2560- 2563 ,(2000) , 10.1063/1.1287755
Woo-Hwan Jung, Dielectric loss anomaly and polaron hopping conduction of Gd1/3Sr2/3FeO3 Journal of Applied Physics. ,vol. 90, pp. 2455- 2458 ,(2001) , 10.1063/1.1388600
T. Ishikawa, S. K. Park, T. Katsufuji, T. Arima, Y. Tokura, Optical spectroscopy of charge-ordering transition Physical Review B. ,vol. 58, ,(1998) , 10.1103/PHYSREVB.58.R13326
Woo-Hwan Jung, Transport mechanisms in La0.7Sr0.3FeO3: Evidence for small polaron formation Physica B: Condensed Matter. ,vol. 299, pp. 120- 123 ,(2001) , 10.1016/S0921-4526(00)00590-1
J. Schnakenberg, Polaronic Impurity Hopping Conduction Physica Status Solidi (b). ,vol. 28, pp. 623- 633 ,(1968) , 10.1002/PSSB.19680280220
Jeppe C. Dyre, The random free‐energy barrier model for ac conduction in disordered solids Journal of Applied Physics. ,vol. 64, pp. 2456- 2468 ,(1988) , 10.1063/1.341681
Woo-Hwan Jung, Variable range hopping conduction in Gd1/3Sr2/3FeO3 Physica B-condensed Matter. ,vol. 304, pp. 75- 78 ,(2001) , 10.1016/S0921-4526(01)00500-2
P.D. Battle, T.C. Gibb, P. Lightfoot, The structural consequences of charge disproportionation in mixed-valence iron oxides. I. The crystal structure of Sr2LaFe3O8.94 at room temperature and 50 K Journal of Solid State Chemistry. ,vol. 84, pp. 271- 279 ,(1990) , 10.1016/0022-4596(90)90325-R
David Emin, Phonon-assisted transition rates I. Optical-phonon-assisted hopping in solids Advances in Physics. ,vol. 24, pp. 305- 348 ,(1975) , 10.1080/00018737500101411
P. Schiffer, A. P. Ramirez, W. Bao, S-W. Cheong, Low Temperature Magnetoresistance and the Magnetic Phase Diagram ofLa1−xCaxMnO3 Physical Review Letters. ,vol. 75, pp. 3336- 3339 ,(1995) , 10.1103/PHYSREVLETT.75.3336