Enhanced magnetic modulation at a border of magnetic ordering in La1−xSrxMnO3/BaTiO3(100) heterostructure
Enhanced magnetic modulation at a border of magnetic ordering in La1−xSrxMnO3/BaTiO3(100) heterostructure
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DOI：
10.1063/5.0150917
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发表时间：
2023-05
影响因子：
4
通讯作者：
K. Imura;Shota Ishikawa;S. Komori;T. Taniyama
中科院分区：
文献类型：
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作者：
K. Imura;Shota Ishikawa;S. Komori;T. Taniyama
在具有多铁性界面的La_1BaTiO_3/−_xSrxMnO_3(LSMO)/BaTiO_3(BTO)异质结中，观察到了磁结构的人为调制。La1BaTiO3xSrxMnO3的饱和磁化强度由于−衬底的结构相变引起的面内变形而发生不连续的变化。外部电场的极性反转也会导致磁化的可逆转换。由于磁弹性效应和电场效应，这两种磁调制的大小在位于磁相变边界的临界成分XC∼0.55时伴随着增强。磁化强度的极性变化可能归因于LSMO/BTO界面上氧离子浓度的变化，表明交换作用是由电场的极性相互驱动从铁磁到反铁磁的。
In La1−xSrxMnO3 (LSMO)/BaTiO3 (BTO) heterostructures with a multiferroic interface, an artificial modulation of the magnetic structure is observed. The saturation magnetization of La1−xSrxMnO3 changes discontinuously due to in-plane distortions caused by a structural phase transition of a BaTiO3 substrate. Polarity reversal of the external electric field also causes a reversible switching in the magnetization. The magnitude of both magnetic modulations, due to the magnetoelastic and electric field effects, is concomitantly enhanced at a critical composition xc∼0.55, locating at a border of the magnetic phase transition. The polarity-dependent change in magnetization is possibly attributed to a change in the concentration of oxygen ions at the LSMO/BTO interface, indicating that the exchange interaction is reciprocally driven from being ferromagnetic to antiferromagnetic by the electric field polarity.