Magnetic field induced ferroelectricity in copper doped CdI2 single crystals

被引：22
作者：
Kityk, IV
Pyroha, SA
Mydlarz, T
Kasperczyk, J
Czerwinski, M
机构：
[1] Int Lab High Magnet Fields & Low Temp, PL-50520 Wroclaw, Poland
[2] Pedadog Univ, Inst Phys, PL-42201 Czestochowa, Poland
[3] Volynian State Univ, Inst Phys, UA-290053 Lutsk, Ukraine
[4] Pedadog Univ, Inst Chem, PL-42201 Czestochowa, Poland
来源：
FERROELECTRICS | 1998年 / 205卷 / 1-4期
关键词：
magneto-electric effect; layered crystals; CdI2 : Cu;
D O I：
10.1080/00150199808228391
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have discovered a new type of ferroelectricity in highly anisotropic CdI2 layered crystals doped with copper. A spontaneous electric polarization is created in result of interaction between long-range interlayer polar acoustical vibrations and magnetically oriented copper ions. The phenomenon is strongly enhanced after applying external magnetic field at liquid helium temperatures. The strongest effect has been observed in the case of magnetic field direction perpendicular to the layers. Optical measurements were carried out using a second harmonic generation method.
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收藏
页码：107 / 118
页数：12
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