OBSERVATION OF A THRESHOLD BEHAVIOR IN THE OPTICAL BAND-GAP AND THERMAL-DIFFUSIVITY OF GE-SB-SE GLASSES

被引：44

作者：

SRINIVASAN, A ^{[1
]}

MADHUSOODANAN, KN ^{[1
]}

GOPAL, ESR ^{[1
]}

PHILIP, J ^{[1
]}

机构：

[1] COCHIN UNIV SCI & TECHNOL,DEPT PHYS,COCHIN 682022,INDIA

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.45.8112

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical band gap (E0) and thermal diffusivity (alpha) of bulk GexSb5Se95-x and GexSb10Se90-x glasses have been measured using the photoacoustic technique. The behavior of E0 and alpha as the mean coordination number <r> is varied shows a maximum at <r> = 2.6. The anomalous behavior at <r> = 2.6 is explained on the basis of changes in the network topology due to the formation and development of layered structure in these glasses.

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页码：8112 / 8115

页数：4

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