Microstructure, Magnetic, and Magnetoresistance Properties of LaSrMnO:CuO Nanocomposite Thin Films.

ACS Appl Mater Interfaces

School of Materials Engineering and ‡Department of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana 47907, United States.

Published: February 2018

AI Article Synopsis

  • LSMO:CuO nanocomposite thin films were successfully created on various substrates using pulsed laser deposition, with a focus on their microstructure and magnetic properties.
  • These films exhibited a highly textured structure, showing a unique domain arrangement influenced by the substrate type and deposition conditions.
  • A notable achievement of approximately 80% low-field magnetoresistance (LFMR) was recorded for films on the LaAlO substrate, attributed to strain effects and phase boundaries.

Article Abstract

(LaSrMnO):(CuO) (LSMO:CuO) nanocomposite thin films were deposited on SrTiO (001), LaAlO (001), and MgO (001) substrates by pulsed laser deposition, and their microstructure as well as magnetic and magnetoresistance properties were investigated. X-ray diffraction (XRD) and transmission electron microscopy (TEM) results show that LSMO:CuO films grow as highly textured self-assembled vertically aligned nanocomposite (VAN), with a systematic domain structure and strain tuning effect based on the substrate type and laser deposition frequency. A record high low-field magnetoresistance (LFMR) value of ∼80% has been achieved in LSMO:CuO grown on LaAlO (001) substrate under high frequency. Detailed analysis indicates that both the strain state and the phase boundary effect play a significant role in governing the overall LFMR behavior.

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http://dx.doi.org/10.1021/acsami.7b17398DOI Listing

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