Dielectric studies of lanthanum heptamolybdate crystals grown from gels

Bhat, Sushma; Khosa, S. K.; Kotru, P. N.; Tandon, R. P.

doi:10.1016/0921-5107(94)01129-x

Cited by 26 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Based on Figures 5-8 tion factor of the Tl 2 S crystalline medium exhibit similar dependences on temperature and frequency of the applied ac electric field. Similarity in behavior has been observed for many materials like lanthanum heptamolybdate [38], neodymium heptamolybdate [39] and La-Nd heptamolybdate [40]. The increase in trend in tan δ with temperature may be due to space charge polarization.…”

Section: Influences Of Frequency and Temperature On The Dissipation Fsupporting

confidence: 72%

Impacts of Temperature and Frequency on the Dielectric Properties for Insight into the Nature of the Charge Transports in the Tl2S Layered Single Crystals

Badr¹

2011

JMP

View full text Add to dashboard Cite

Investigation of the electric properties of semi-conducting materials in an applied ac electric fields gives information about the nature of charge transport and localized states in the forbidden gap. Layered crystals usually contain structural defects, such as dislocations and vacancies that may form a high density of localized states near the Fermi level. So, the current study was carried out for insight into the dielectric Properties of Tl 2 S layered single crystals. These properties were studied using the ac measurements in the low temperatures ranging from 77 to 300 K. The real part of dielectric constant ε ‫׳‬ , imaginary part of dielectric constant ε ‫״‬ , the dissipation factor tan δ and the alternating current conductivity σ ac were measured in an applied ac electric field of frequencies extending from 2.5 to 50 kHz. Based on the dependencies of these dielectric parameters on both the frequency and temperature, the dielectric properties of the crystals under investigation were elucidated and analyzed. The ac conductivity was found to obey the power law σ ac (ω) = Aω s with which the values of the exponent s were evaluated to be less than unity in the range 0.21 ≥ s ≥ 0.19. Furthermore, it was found that the temperature dependence of ac conductivity follows the Arrhenius relation via which the impact of temperature on the electrical processes in an applied ac electric field was illustrated and analyzed. The influences of temperature and frequency on both the exponent s and band gap were also discussed in this investigation.

show abstract

Section: Influences Of Frequency and Temperature On The Dissipation Fsupporting

confidence: 72%

Impacts of Temperature and Frequency on the Dielectric Properties for Insight into the Nature of the Charge Transports in the Tl2S Layered Single Crystals

Badr¹

2011

JMP

View full text Add to dashboard Cite

show abstract

“…Sr-oxalate X [187,188] Cd-oxalate X Diamagnetic [189][190][191] CdMgHPO 4 X [192] Ndhepthamolybdate X [193] Lahepthamolybdate X X [194] Cu-succinate X [195] Cu-tartrate Diamagnetic [195] …”

Section: Behavior Referencesmentioning

confidence: 99%

Crystallization in Gels

Moreno

Mendoza

2015

Handbook of Crystal Growth

View full text Add to dashboard Cite

“…Above 0.083 MHz, the Ag + /K + ion exchanged glass shows lower ac conductivity with respect to that in PKSm glass. While below 0.083 MHz, an inverse effect is remarked because of change in predominance of polarization when the frequency varies [28]. The decrease in conductivity of PAgSm glass at higher frequencies is also attributed to the large surface scattering and intrawell hopping of charge carriers in short range among localized states.…”

Section: Effects Of Ag Nanoparticles On Frequency Dependent Dielectrimentioning

confidence: 83%

Sm3+-doped fluorophosphate glass: Formation of Ag nanoparticles via Ag+/K+ ion exchange and their effects on optical and dielectric properties

et al. 2015

View full text Add to dashboard Cite

Dielectric studies of lanthanum heptamolybdate crystals grown from gels

Cited by 26 publications

References 17 publications

Impacts of Temperature and Frequency on the Dielectric Properties for Insight into the Nature of the Charge Transports in the Tl2S Layered Single Crystals

Impacts of Temperature and Frequency on the Dielectric Properties for Insight into the Nature of the Charge Transports in the Tl2S Layered Single Crystals

Crystallization in Gels

Sm3+-doped fluorophosphate glass: Formation of Ag nanoparticles via Ag+/K+ ion exchange and their effects on optical and dielectric properties

Contact Info

Product

Resources

About