The application of electric field-induced magnetic structure changes has significantly advanced nonvolatile data storage with ultralow energy consumption, as well as spintronics and quantum computing processes. In artificial perovskite oxide multiferroic structures composed of ferromagnetic and ferroelectric layers, the evolution of magnetic phases and ferroelectric domains often contribute to the magnetoelectric coupling. To fully understand the mechanisms behind electric field-induced changes in magnetic structures and enable the miniaturization of magnetoelectric devices, it is crucial to achieve local ferroelectric domain-triggered ferromagnetic evolution. In this study, we have fabricated LaCaMnO/Pb(ZrTi)O (LCMO/PZT) heterostructures, where the magnetic phase separation of LCMO and the ferroelectric domain of PZT can be modulated by substrates and piezoelectric force microscopy, respectively. Our experiments demonstrate that by switching the polarization states of PZT, we can observe electric field control of the magnetic exchange bias effect through changes in the phase separation of the LCMO layer. These results contribute to the development of magnetoelectric devices with enhanced properties and offer valuable insights for future design strategies.

中文翻译：

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锰酸盐/铁电多铁异质结构中的原位电场定制交换偏置

电场引起的磁结构变化的应用显着推进了具有超低能耗的非易失性数据存储以及自旋电子学和量子计算过程。在由铁磁层和铁电层组成的人造钙钛矿氧化物多铁结构中，磁相和铁电域的演化通常有助于磁电耦合。为了充分理解电场引起的磁结构变化背后的机制并实现磁电器件的小型化，实现局部铁电畴触发的铁磁演化至关重要。在这项研究中，我们制备了 LaCaMnO/Pb(ZrTi)O (LCMO/PZT) 异质结构，其中 LCMO 的磁相分离和 PZT 的铁电畴可以分别通过基板和压电力显微镜进行调制。我们的实验表明，通过切换 PZT 的偏振态，我们可以通过 LCMO 层相分离的变化来观察电场对磁交换偏置效应的控制。这些结果有助于开发具有增强性能的磁电器件，并为未来的设计策略提供宝贵的见解。