Effect of iron doping on the characterization and transport properties of calcium phosphate glassy semiconductors

Investigation of DC Conductivity and Non-Adiabatic Small Polaron Hopping in V2o5-Seo2-Zno Glass Nanocomposites

“…1, exp (-2αR), is neither constant nor equal to one, which means that σ 0 varies with composition, specifying nonadiabatic nature of hopping conduction [17], [32]. The term pre-exponential factor (σ 0 ) is estimated by means of the experimental results, explicitly the intercept of log σ dc versus1000/T plot at 1000/T = 0 [33]. Fig.…”

“…If the estimated temperature from the slope of such plot is near to experimental temperature, it is supposed to be of adiabatic type. Otherwise, the hopping would be of non-adiabatic type [33], [35]. Fig.…”

“…6(a) and the value of slope is (-2α). The estimated value of α is 1.169×10 8 cm -1 , which is lesser than the values of that of some other semiconducting glassy systems [3], [33]. The value of R V is plotted against the concentration of V 2 O 5 (x) as shown in Fig.…”

Transport properties of Ba-doped BiFeO3 multiferroic nanoparticles

“…An unambiguous decision as to whether the polaron is actually in the adiabatic or in the non-adiabatic regime requires an estimate of the value of J, which can be obtained from [17] …”

“…A strong electron-phonon interaction is considered to be responsible for the formation of small polarons [11] and the polaron hopping conduction model has been used to illustrate the semiconducting behavior. The semiconducting properties of transition metal oxide (TMO) arise from the presence of different valence states of transition metal ions [12][13][14][15][16][17].…”