跳至主要内容

Role of Silver Incorporation on the Specific Heat in Glassy Se80Te20 Alloy

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50580#.VEX1clfHRK0

Specific heat measurements have been made in glassy Se80-xTe20Agx (0 ≤ x ≤ 15) alloys using differential scanning calorimetry (DSC) technique. An extremely large increase in the specific heat values has been observed at the glass transition temperature. It has also been found that the values of Cp below glass transition temperature and the difference of Cp values before and after glass transition (ΔCp) are highly composition dependent. This indicates that the incorporation of Ag in binary Se80Te20 alloy in the present study influences the structure of the binary alloy. Specific heat of the additive element Ag is found to be important for the observed changes in the specific heat of the ternary alloys as compared to binary alloy.
Cite this paper
Saraswat, S. and Sharma, S. (2014) Role of Silver Incorporation on the Specific Heat in Glassy Se80Te20 Alloy. New Journal of Glass and Ceramics, 4, 66-71. doi: 10.4236/njgc.2014.44009.
 

[1] Mehta, N. (2006) Applications of Chalcogenide Glasses in Electronics and Optoelectronics: A Review. Journal of Scientific & Industrial Research, 65, 777-786.
[2] Andriesh, A.M., Iovu, M.S. and Shutov, S.D. (2002) Competitive Photostructural Effects in Ge-Se Glass. Journal of Optoelectronics and Advanced Materials, 4, 631-647.
[3] Yamada, N. (1996) Erasable Phase-Change Optical Materials. MRS Bulletin, 21, 48-50.
[4] Ohta, T. (2001) Phase-Change Optical Memory Promotes the DVD Optical Disk. Journal of Optoelectronics and Advanced Materials, 3, 609-626.
[5] Lankhorst, M.H.R. (2002) Modelling Glass Transition Temperature of Chalcogenide Glasses Applied to Phase-Change Optical Recording Materials. Journal of Non-Crystalline Solids, 297, 210-219.
http://dx.doi.org/10.1016/S0022-3093(01)01034-1
[6] Khan, S.A., Zulfequar, M. and Husain, M. (2002) On the Crystallization Kinetics of Amorphous Se80Te20-xPbx. Solid State Communications, 123, 463-468. http://dx.doi.org/10.1016/S0038-1098(02)00147-3
[7] El-Oyoun, M.A., Shurit, G.M., Gaber, A. and Afify, N. (2003) Differential Scanning Calorimetric Study of Ga5Se95 Glass. Journal of Physics and Chemistry of Solids, 64, 821-826.
http://dx.doi.org/10.1016/S0022-3697(02)00412-2
[8] Kumar, H., Mehta, N., Singh, K. and Saxena, N.S. (2010) Effect of Lithium Ion Irradiation on the Glass Transition Kinetics of Se98In2 Chalcogenide Glass. Phase Transitions, 83, 1-9.
http://dx.doi.org/10.1080/01411590903509504
[9] Pustkova, P., Shanelova, J., Cicmanec, P. and Malek, J. (2003) Structural Relaxation of Amorphous Ge38S62 Studied by Length Dilatometry and Calorimetry. Journal of Thermal Analysis and Calorimetry, 72, 355.
http://dx.doi.org/10.1023/A:1023965029780
[10] Ma, H.L., Zhang, X.H., Lucas, J. and Moyanihan, C.T. (1992) Relaxation near Room Temperature in Tellurium Chalcohalide Glasses. Journal of Non-Crystalline Solids, 140, 209.
http://dx.doi.org/10.1016/S0022-3093(05)80768-9
[11] Agarwal, P., Rai, J.S.P. and Kumar, A. (1993) Heat Capacities of Se100-xTex Glasses. Indian Journal of Pure and Applied Physics, 31, 502-503.
[12] Kabinal, M.K., Sangunni, K.S., Subramanyam, S.V. and Gopal, E.S.R. (1995) Specific Heat Measurements on Ge-Se-In Glasses. Physics and Chemistry of Glasses, 36, 50-52.
[13] Pradeep, P., Saxena, N.S., Saksena, M.P. and Kumar, A. (1996) Heat Capacities and Relaxation Effects of Se-Te-Cd Glasses. Physica Status Solidi (a), 155, 333-339.
http://dx.doi.org/10.1002/pssa.2211550206
[14] Wagner, T., Frumar, M. and Kasap, S.O. (1999) Glass Transformation, Heat Capacity and Structure of Agx(As0.4Se0.6)100-x Glasses Studied by Temperature-Modulated Differential Scanning Calorimetry. Journal of Non-Crystalline Solids, 256-257, 160-164.
[15] Pradeep, P., Saxena, N.S. and Kumar, A. (1997) Crystallization and Specific Heat Studies of Se100-xSbx (x = 0, 2 and 4) Glass. Journal of Physics and Chemistry of Solids, 58, 385-389.
http://dx.doi.org/10.1016/S0022-3697(96)00148-5
[16] Alake, T., Abe, R., Honda, K., Kawaji, H., Johnsen, H.B. and Stolen, S. (2000) Heat Capacities of Glassy and Crystalline GeSe2. Journal of Physics and Chemistry of Solids, 61, 1373-1377.
http://dx.doi.org/10.1016/S0022-3697(00)00022-6
[17] Tiwari, R.S., Mehta, N., Shukla, R.K. and Kumar, A. (2005) Thermal Characterisation of Some Se-Ge-In Chalcogenide Glasses by Differential Scanning Calorimetry. Physics and Chemistry of Glasses, 46, 595-599.
[18] Saraswat, S. and Kushwaha, S.S.S. (2009) Structural Interpretation of Specific Heat Measurements on Glassy Se100-xSbx Alloys. Philosophical Magazine, 89, 583-593.
http://dx.doi.org/10.1080/14786430902720945
[19] Saraswat, S. and Kushwaha, S.S.S. (2009) Specific Heat Studies in a-Se and a-Se90M10 (M = In, Sb, Te) Alloys. Journal of Thermal Analysis and Calorimetry, 96, 923-927. http://dx.doi.org/10.1007/s10973-009-0065-9
[20] Frumar, M. and Wagner, T. (2003) Ag Doped Chalcogenide Glasses and Their Applications. Current Opinion in Solid State and Materials Science, 7, 117-126.
[21] Tanaka, K., Itoh, M., Yoshida, N. and Ohta, M. (1995) Photoelectric Properties of Ag-As-S Glasses. Journal of Applied Physics, 78, 3895-3901. http://dx.doi.org/10.1063/1.359906
[22] Kawaguchi, T., Maruno, S. and Elliott, S.R. (1996) Optical, Electrical, and Structural Properties of Amorphous Ag-Ge-S and Ag-Ge-Se Films and Comparison of Photoinduced and Thermally Induced Phenomena of Both Systems. Journal of Applied Physics, 79, 9096-9104.
http://dx.doi.org/10.1063/1.362644
[23] Ohta, M. (1997) Effect of Small Amounts of Silver on the Electrical Properties of As2S3 Glasses. Physica Status Solidi (a), 159, 461-468. http://dx.doi.org/10.1002/1521-396X(199702)159:2<461::AID-PSSA461>3.0.CO;2-W
[24] Wagner, T., Frumar, M. and Suskova, V. (1991) Photoenhanced Dissolution and Lateral Diffusion of Ag in Amorphous As-S Layers. Journal of Non-Crystalline Solids, 128, 197-207.
[25] Srivastava, A., Kushwaha, V.S. and Mehta, N. (2014) Effect of Ag Incorporation on the Correlation between Pre-Exponential Factor and Activation Energy of Thermally Activated High Field Conduction in Ge20Se80 Alloy. Journal of Advanced Physics, 2, 265-269. http://dx.doi.org/10.1166/jap.2013.1079
[26] Ramesh, K., Asokan, S., Sangunni, K.S. and Gopal, E.S.R. (2000) Glass Formation in Germanium Telluride Glasses Containing Metallic Additives. Journal of Physics and Chemistry of Solids, 61, 95-101.
http://dx.doi.org/10.1016/S0022-3697(99)00239-5
[27] Frumar, M., Cernosek, Z., Jedelsky, J., Frumarova, B. and Wagner, T. (2001) Photoinduced Changes of Structure and Properties of Amorphous Binary and Ternary Chalcogenides. Journal of Optoelectronics and Advanced Materials, 3, 177-126.
[28] Tiwari, R.S., Mehta, N., Shukla, R.K. and Kumar, A. (2006) Composition Dependence of Specific Heat in Se70-xTe20Agx Chalcogenide Glasses. Journal of Ovonic Research, 2, 53-59.
[29] Mahadevan, S., Giridhar, A. and Singh, A.K. (1986) Calorimetric Measurements on As-Sb-Se Glasses. Journal of Non-Crystalline Solids, 88, 11-34.
[30] Ma, H.L., Zhang, X.H. and Lucas, J. (1992) Relaxation near Room Temperature in Tellurium Chalcohalide Glasses. Journal of Non-Crystalline Solids, 140, 209-214.                                                eww141021lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文