ENDOR INVESTIGATION OF THE POLAR STRUCTURE OF TRIS-SARCOSINE CALCIUM-CHLORIDE

被引：2
|
作者：
METZ, H
BOTTCHER, R
WINDSCH, W
机构：
[1] Sektion Physik der Universität Leipzig
来源：
CHEMICAL PHYSICS LETTERS | 1991年 / 182卷 / 02期
关键词：
D O I：
10.1016/0009-2614(91)80116-F
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：
H-1 and C-13 ENDOR investigations on Mn-doped tris-sarcosine calcium chloride (TSCC) and tris-sarcosine calcium bromide (TSCB) at 4.2 K reveal the polar structure of the calcium-(sarcosine)6 complex in the ferroelectric phase of TSCC. The sarcosine molecules of type I do not change their position in the ferroelectric phase and give no contribution to the spontaneous polarization. The molecules of type II undergo an opposite tilt of about 3-degrees in the (100) plane at 4.2 K. This tilting angle is temperature dependent and responsible for the polar structure of TSCC below T(c).
引用
收藏
页码：132 / 138
页数：7
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