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
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
收藏
页码:357 / 366
页数:10
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