论文标题

LORENTZ显微镜和小角度电子衍射研究LA $ _ {1-x} $ sr $ _x $ mno $ _3 $(0.15 $ <x <$ 0.30):磁动率的作用

Lorentz microscopy and small-angle electron diffraction study of magnetic textures in La$_{1-x}$Sr$_x$MnO$_3$ (0.15 $< x <$ 0.30): the role of magnetic anisotropy

论文作者

Kotani, A., Nakajima, H., Harada, K., Ishii, Y., Mori, S.

论文摘要

Magnetic textures in the ferromagnetic phases of La$_{1-x}$Sr$_x$MnO$_3$ for 0.15 $< x <$ 0.30 have been investigated by Lorentz microscopy combined with small-angle electron diffraction experiments.发现了各种类型的磁纹理,以条纹,板状和圆柱状(磁性气泡)结构域进行特征。正骨结构中出现了两种不同类型的磁条带域,其反转对称为la $ _ {0.825} $ sr $ _ {0.175} $ mno $ _3 $,取决于磁晶方偶然的。基于原位观测作为温度的功能和外部磁场的强度,构建了一个磁场 - 温度相图,显示了LA $ _ {0.825} $ _ {0.825} $ SR $ _ {0.175} $ mno $ $ _3 $ $ _3 $的磁场稳定磁泡。

Magnetic textures in the ferromagnetic phases of La$_{1-x}$Sr$_x$MnO$_3$ for 0.15 $< x <$ 0.30 have been investigated by Lorentz microscopy combined with small-angle electron diffraction experiments. Various types of magnetic textures characterized by stripe, plate-shaped, and cylindrical (magnetic bubble) domains were found. Two distinct types of magnetic stripe domains appeared in the orthorhombic structure with an inversion symmetry of La$_{0.825}$Sr$_{0.175}$MnO$_3$, depending significantly on magnetocrystalline anisotropy. Based on in-situ observations as functions of temperature and the strength of the external magnetic field, a magnetic field-temperature phase diagram was constructed, showing the stabilization of magnetic bubbles in the ferromagnetic phase of La$_{0.825}$Sr$_{0.175}$MnO$_3$.

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