Structural, magnetic and transport properties of fully epitaxial LaMnO3/LaAlO3multilayers

Y. K. Liu, H. F. Wong, S. Z. Huang, S. X. Hu, S. M. Ng, K. K. Lam, C. L. Mak, Chi Wah Leung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

The structural, magnetic and transport properties of LaMnO3/LaAlO3(2 unit cells) (LMO/LAO) multilayers with different thicknesses of LMO layer grown on SrTiO3substrates were studied. Structural investigations confirmed that all the samples were fully epitaxial and the out-of-plane lattice constant increased with rising LMO layer thickness t from 1 to 4 unit cells. Ferromagnetic behavior could be observed only when t was above 2 unit cells, while the coercive field reduced with increasing t. Transport measurements indicated that all the multilayers were insulating and the activation energy of the multilayers were much larger than single-layered LMO films. These results provide a promising route for tuning the structure, electronic and magnetic properties in other strong-correlated materials.
Original languageEnglish
Pages (from-to)230-232
Number of pages3
JournalMaterials Letters
Volume205
DOIs
Publication statusPublished - 15 Oct 2017

Keywords

  • Epitaxial growth
  • Magnetic properties
  • Manganites
  • Multilayer structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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