期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 252, 期 9, 页码 2111-2116出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201552113
关键词
Cole-Cole relations; conduction mechanism; polaron hopping; sol-gel method; V2O5 nanorods
Properties of high purity V2O5 nanorods prepared by a sol-gel method are presented. The studied materials were characterized by: X-ray diffractometry (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The electrical impedance was measured as a function of temperature and frequency. The obtained results show that the electrical conductivity increases with increasing temperature. The d.c. conductivity exhibits activation energy of 0.23eV (+/- 0.01). Two dielectric relaxation processes were observed and attributed to the conductivity of grain boundaries and grains interiors
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