A.c. conductivity in binary V₂O₅-P₂O₅ glasses

Temperature and frequency dependent conductivity and electric modulus formulation of manganese modified bismuth silicate glasses

“…In present samples small polaron conduction mechanism is predominant at high frequencies. Similar behavior has been reported by several authors for TMO glasses [6,[37][38][39][40]. However, conduction mechanism at low frequencies in glass sample with x = 0, 5, 10 and 15 may be due to CBH conduction.…”

Ac and dc conductivities in V2O5–P2O5 glasses containing alkaline ions

“…The generality of this power law in different classes of materials has been pointed out by Jonscher, who refers to it as a universal dynamic response (UDR) [13]. In electronic and ionic conducting glasses the exponent, s(T), is a decreasing function of temperature ranged from 0.6 at a high temperature region to nearly one at low temperatures [14,15]. Similar behavior of s(T) is observed in mixed electronic-ionic glasses containing 10 and 20 mol% A 2 O.…”

Electronic and ionic relaxations in oxide glasses

“…In consequence, the carrier concentration is constant and the carrier mobility is thermally activated. e. The ac conductivity exhibits frequency dependence of the form r(x) = Ax s , where A and s are constant and also show little temperature dependence [6,7]. f. The conductivity is enhanced under high electric fields [8] and switching and memory effects are observed [9].…”