Role of Additives (Cd and Ge) On the Ac Conductivity and Dielectric Relaxation of Se70Te30 Glassy Alloy

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Santosh Kumar
Santosh Kumar
σ
Dr. J. Sharma
Dr. J. Sharma
ρ
S. Kumar
S. Kumar
α Chhatrapati Shahu Ji Maharaj University Chhatrapati Shahu Ji Maharaj University

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Role of Additives (Cd and Ge) On the Ac Conductivity and Dielectric Relaxation of Se70Te30 Glassy Alloy

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Abstract

The effect of additives (Cd and Ge) on a.c conductivity and dielectric properties of Se 70 Te 30 glassy alloy at temperature range 300 K-350 K and frequency range 1 KHz-5 MHz has been studied. Experimental results indicate that the a.c conductivity and dielectric parameters are temperature, frequency and impurity dependent. The a.c conductivity in the aforesaid frequency range is found to obey the ω s law. A strong dependence of a.c conductivity and exponent s in the entire temperature and frequency range contradicts quantum-mechanical tunneling (QMT) model and can be interpreted in terms of the correlated barrier hopping (CBH) model .The temperature and frequency dependence of the dielectric parameters are also studied and results agrees by the theory of hopping of charge carriers over potential barrier as suggested by Elliott in chalcogenide glasses. The variation of above mentioned properties with Cd and Ge are also investigated and results are explained in terms of lone pair configuration and covalent bond character of the studied compositions.

References

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Santosh Kumar. 1970. \u201cRole of Additives (Cd and Ge) On the Ac Conductivity and Dielectric Relaxation of Se70Te30 Glassy Alloy\u201d. Global Journal of Science Frontier Research - A: Physics & Space Science GJSFR-A Volume 13 (GJSFR Volume 13 Issue A1): .

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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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The effect of additives (Cd and Ge) on a.c conductivity and dielectric properties of Se 70 Te 30 glassy alloy at temperature range 300 K-350 K and frequency range 1 KHz-5 MHz has been studied. Experimental results indicate that the a.c conductivity and dielectric parameters are temperature, frequency and impurity dependent. The a.c conductivity in the aforesaid frequency range is found to obey the ω s law. A strong dependence of a.c conductivity and exponent s in the entire temperature and frequency range contradicts quantum-mechanical tunneling (QMT) model and can be interpreted in terms of the correlated barrier hopping (CBH) model .The temperature and frequency dependence of the dielectric parameters are also studied and results agrees by the theory of hopping of charge carriers over potential barrier as suggested by Elliott in chalcogenide glasses. The variation of above mentioned properties with Cd and Ge are also investigated and results are explained in terms of lone pair configuration and covalent bond character of the studied compositions.

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Role of Additives (Cd and Ge) On the Ac Conductivity and Dielectric Relaxation of Se70Te30 Glassy Alloy

Dr. J. Sharma
Dr. J. Sharma
S. Kumar
S. Kumar

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