Optical, elastic properties and DTA of TNZP host tellurite glasses doped with Er3+ ions

被引:49
|
作者
Yousef, El Sayed [1 ]
Elokr, M. M. [2 ]
AbouDeif, Y. M. [2 ]
机构
[1] Al Azhar Univ, Assiut Branch, Fac Sci, Dept Phys, Assiut, Egypt
[2] Al Azhar Univ, Fac Sci, Dept Phys, Cairo 11884, Egypt
关键词
Energy gap; Linear refractive index; Elastic properties; DTA; Tellurite glasses; POLARIZABILITY; ER2O3; ABSORPTION; BASICITY;
D O I
10.1016/j.molstruc.2015.11.066
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Novel quaternary tellurite glasses within the composition 75TeO(2)-10Nb(2)O(5)-10ZnO-5PbO (TNZP) doped with the following Er3+ concentrations: 2500, 3750, 5000, 6250, 7500 and 8750 ppm have been prepared by using conventional melt quenching method. The thermal parameters, such as the glass transition temperature (T-g), crystallization temperature (T-c) and thermal stability (Delta T) were determined. It is described that this system shows a stable glass formation, high thermal stability and low tendency crystallization. The linear refractive index, n, the optical energy gap, E-g, the nonlinear refractive index, n2, two photon absorption TPA, third order susceptibility, chi((3)), of prepared glasses have been determined. Moreover elastic properties like longitudinal (lambda), shear (mu), Bulk (beta) and Young's (Y) moduli, Poisson's ratio, Debye temperature, and the microhardness of the glasses were evaluated by measuring both longitudinal and shear velocities using the pulse-echo overlap technique at 5 MHz. The present glasses is a promising candidate for optical application. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:257 / 262
页数:6
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