Coexistence of perpendicular magnetic anisotropy and ferromagnetic insulation in vertically aligned nanocomposite films
Abstract
Perpendicular magnetic anisotropy and ferromagnetic insulating behavior are two key properties for the advancement of spintronic devices, yet their coexistence in a single material system remains challenging. In this work, we report the epitaxial growth of (La0.7Sr0.3MnO3)1−x:(MgO)x (x = 0, 0.1, 0.3, and 0.5) vertically aligned nanocomposite thin films on SrTiO3(001) substrates, in which both properties are simultaneously realized. The introduction of vertically aligned MgO nanopillars induces strong out-of-plane (OOP) lattice elongation in the LSMO matrix, leading to a reorientation of the magnetic easy axis from in-plane to OOP with increasing MgO content. In parallel, a transition from metallic-insulating behavior to fully insulating conduction is observed with increasing MgO concentration. This study demonstrates the dual modulation of magnetic and transport properties via vertical strain engineering, offering a powerful platform for next-generation spintronic device design.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (13)
Lianxu Ye
College of Physics, MIIT Key Laboratory of Aerospace Information Materials and Physics, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 211106,
Huan Zheng
College of Physics, MIIT Key Laboratory of Aerospace Information Materials and Physics, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 211106,
Yuanyuan Zhang
Ruixing Xu
School of Microelectronics & Data Science, Anhui University of Technology 3 , Maanshan 243002,
Chongjun He
College of Astronautics, MIIT Key Laboratory of Space Photoelectric Detection and Perception, Nanjing University of Aeronautics and Astronautics 4 , Nanjing 211106,
Run Zhao
Rujun Tang
Weiwei Li
Beijing University of Chemical Technology , , ,
Fengjiao Qian
Key Laboratory of Aerospace Information Materials and Physics (NUAA), MIIT, Department of Applied Physics, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 211106,
Yanda Ji
College of Physics, MIIT Key Laboratory of Aerospace Information Materials and Physics, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 211106,
Jiyu Fan
Key Laboratory of Aerospace Information Materials and Physics (NUAA), MIIT, Department of Applied Physics, Nanjing University of Aeronautics and Astronautics 1 , Nanjing 211106,
Yan Zhu
Hao Yang