Domain topography of antiferromagnetic Cr2O3 by second‐harmonic generation

Domain topography of antiferromagnetic Cr2O3 by second‐harmonic generation
复制标题

通过二次谐波产生反铁磁 Cr2O3 的磁畴形貌

DOI：
--
复制
发表时间：
1995
期刊：
影响因子：
--
通讯作者：
R. Pisarev
R. Pisarev
中科院分区：
--
文献类型：
--
作者：
M. Fiebig;D. Fröhlich;R. Pisarev

文献摘要

被引文献

相似文献

时不变磁偶极子贡献与时不变电偶极子贡献对二次谐波（SH）的干扰提供了一种机制，该机制对自旋的反铁磁有序化导致Cr2 O3对称性降低敏感。在1.7-3.1 eV的光谱范围内观察到一个显着的偏振依赖的SH的顺序参数的符号。该效应被用来研究通过使用CCD相机的Cr2 O3的畴结构。分钟量级的曝光时间足以产生10 mm 2样品中畴的高分辨率图像。
The interference of the time‐invariant magnetic‐dipole contribution with the time‐noninvariant electric‐dipole contribution to the second harmonic (SH) provides a mechanism which is sensitive to the reduction of symmetry of Cr2O3 by antiferromagnetic ordering of spins. A pronounced polarization dependence of the SH on the sign of the order parameter is observed in the 1.7–3.1 eV spectral range. The effect is used to study the domain structure of Cr2O3 by use of a CCD camera. Exposure times in the order of minutes are sufficient to yield a high‐resolution image of domains in samples of 10 mm2.