Perpendicular Exchange-Biased Magnetotransport at the Vertical Heterointerfaces in La0.7Sr0.3MnO3:NiO Nanocomposites

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• 作者：Wenrui Zhang ; Leigang Li ; Ping Lu ; Meng Fan ; Qing Su ; Fauzia Khatkhatay ; Aiping Chen ; Quanxi Jia ; Xinghang Zhang ; Judith L. MacManus-Driscoll ; Haiyan Wang
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：October 7, 2015
• 年：2015
• 卷：7
• 期：39
• 页码：21646-21651
• 全文大小：443K
• ISSN：1944-8252

文摘

Heterointerfaces in manganite-based heterostructures in either layered or vertical geometry control their magnetotransport properties. Instead of using spin-polarized tunneling across the interface, a unique approach based on the magnetic exchange coupling along the vertical interface to control the magnetotransport properties has been demonstrated. By coupling ferromagnetic La_0.7Sr_0.3MnO₃ and antiferromagnetic NiO in an epitaxial vertically aligned nanocomposite (VAN) architecture, a dynamic and reversible switch of the resistivity between two distinct exchange biased states has been achieved. This study explores the use of vertical interfacial exchange coupling to tailor magnetotransport properties, and demonstrates their viability for spintronic applications.