Magnetoelectric properties of some rare earth molybdates
Magnetoelectric properties of some rare earth molybdates
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一些稀土钼酸盐的磁电特性
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
B. Red’kin
中科院分区：
文献类型：
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作者：
B. K. Ponomarev;S. Ivanov;Y. F. Popov;V. D. Negriǐ;B. Red’kin
在78K下，在100kOe的磁场作用下，我们观察到了Tb2（MoO4）3和TbGd（MoO4）3正交晶系γ ′相单晶样品的自发极化反转现象。我们解释了这种效应之间的磁弹性耦合的磁子系统和电晶体。这一解释证实了磁致伸缩测量在78 K的脉冲磁场高达150 kOe。测量了Tb2（MoO4）3的光致发光光谱。在光谱中存在强度对偏振有很强依赖性的谱线。
Abstract We observed the spontaneous electric polarization reversal induced by the magnetic field of 100 kOe at 78 K in single crystal samples of orthorhombic β'-phases of Tb2(MoO4)3 and TbGd(MoO4)3. We explained this effect by magnetoelastic coupling between the magnetic and electric subsystems in a crystal. This explanation was confirmed by magnetostriction measurements at 78 K in pulsed magnetic fields up to 150 kOe. Photoluminescence spectra of Tb2(MoO4)3 were measured. There are lines in the spectra with a strong dependence of intensity on polarization.