Variation of Topology in Magnetic Bubbles in a Colossal Magnetoresistive Manganite

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• 作者：Xiuzhen Yu ; Yusuke Tokunaga ; Yasujiro Taguchi and Yoshinori Tokura
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：January 18, 2017
• 年：2017
• 卷：29
• 期：3
• 全文大小：1985K
• ISSN：1521-4095

文摘

The emergence of zero-bias bubbles (≈100 nm in diameter) with various Bloch lines and their triangular lattice is revealed in a colossal magnetoresistive material, La_1−xSr_xMnO₃, by means of Lorentz transmission electron microscopy (LTEM). The magnetization dynamics, and accompanying changes of the topological number of bubbles via the field-driven motion of the Bloch lines, are demonstrated by in situ LTEM observations.