Dielectric dispersion and vibrational studies of a new ferroelectric, glycinium phosphite crystal

被引：68
|
作者：
Baran, J [1 ]
Bator, G [1 ]
Jakubas, R [1 ]
Sledz, M [1 ]
机构：
[1] WROCLAW B BEIRUT UNIV,INST CHEM,PL-50383 WROCLAW,POLAND
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1996年 / 8卷 / 49期
关键词：
D O I：
10.1088/0953-8984/8/49/049
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The dielectric dispersion in glycine phosphite crystal over the frequency range 30-1000 MHz is presented. Ferroelectric dispersion of the Debye type along the b-axis occurs in the microwave-frequency region and is caused by a single relaxational soft mode. The powder IR (at low temperatures between 300 and 14 K) and FT Raman spectra in the region between 4000 and 80 cm(-1) are measured. DSC measurements for the GPI and deuterated crystals are performed. The results confirm the order-disorder nature of a proper ferroelectric phase transition of second order.
引用
收藏
页码：10647 / 10658
页数：12
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