000			a
999			_c17065 _d17065
003			OSt
005			20220705095028.0
008			220705b xxu||||| |||| 00| 0 eng d
040			_aAIKTC-KRRC _cAIKTC-KRRC
100			_917088 _aDas, Anindya Sundar
245			_aDC electrical properties and non–adiabatic small polaron hopping in V2O5–CdO–ZnO glass nanocomposites
250			_aVol.57(11), Nov
260			_aNew Delhi _bCSIR _c2019
300			_a803-811p.
520			_aSemiconducting transition metal oxide (TMO) doped glass nanocomposites xV2O5–(1–x) (0.05CdO–0.95ZnO), x=0.3, 0.5, 0.7 and 0.9 have been prepared by melt quenching method. DC electrical conductivity of as prepared glass nanocomposites is are investigated over a wide temperature range. Formation of small polarons has been confirmed from dc electrical conductivity experimental data, whereas conductivity is due to mainly polaron hopping from V+4 to V+5 valence state in these glassy systems. Temperature dependent conductivity data have been analyzed using the small polaron hopping (SPH) model. Low, high temperature activation energy, optical phonon frequency and Debye’s temperature have been determined. Conductivity data have been analyzed in view of Mott’s variable range hopping (VRH) models and Greaves VRH models; the density of states at the Fermi level has been evaluated. Various polaron hopping parameters such as polaron radius, polaron binding energy, polaron band width and polaron coupling constant (γP) have been estimated. It has been ascertained by these estimated quantities and different approaches that the nature of hopping conduction is non–adiabatic variable range hopping of small polarons. The evaluated values of hopping carrier mobility (μ) and hopping carrier concentration (NC) are found to depend on composition and temperature.
650		0	_94642 _aHumanities and Applied Science
700			_917089 _aRoy, Madhab
773	0		_dNew Delhi CSIR-NISCAIR _x0019-5596 _tIndian journal of pure & applied physics (IJPAP)
856			_uhttp://op.niscair.res.in/index.php/IJPAP/article/view/16633 _yClick here
942			_2ddc _cAR