Soft vibrational modes in yttrium and lanthanide metaphosphate glasses

被引：8

作者：

Fontana, A

Leonardi, A

Rave, F

DAngelo, G

Carini, G

Tripodo, G

Saunders, GA

机构：

[1] UNIV MESSINA,DIPARTIMENTO FIS,I-98166 SANT AGATA,MESSINA,ITALY

[2] UNIV BATH,SCH PHYS,BATH BA2 7AY,AVON,ENGLAND

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1996年 / 196卷

关键词：

D O I：

10.1016/0022-3093(95)00614-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Low frequency Raman and Brillouin scattering experiments in yttrium and lanthanide metaphosphate glasses have been carried out over a wide range of temperature from liquid helium to the glass transition temperature (T-g congruent to 900 K). Analysis of the Raman data together with complementary low temperature specific heat and ultrasonic velocity results reveals that the temperature and frequency dependences of the quasi-elastic scattering and Boson peak and in addition the anomalous low temperature specific heat, are in qualitative agreement with the predictions of the soft potential model.

引用

页码：357 / 366

页数：10

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