English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/147972
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Observation of the strain induced magnetic phase segregation of manganite thin films

AuthorsMarín, Lorena; Rodríguez, Luis A.; Magen, Cesar; Snoeck, E.; Lucas, I.; Morellón, Luis; Algarabel, Pedro A. ; Teresa, José María de ; Ibarra, M. Ricardo
KeywordsExchange bias
Electron holography
Phase segregation
Epitaxial thin films
Strain engineering
Issue Date2015
PublisherAmerican Chemical Society
CitationNano Letters 15(1): 492-497 (2015)
AbstractEpitaxial strain alters the physical properties of thin films grown on single crystal substrates. Thin film oxides are particularly apt for strain engineering new functionalities in ferroic materials. In the case of La2/3Ca1/3MnO3 (LCMO) thin films, here we show the first experimental images obtained by electron holography demonstrating that epitaxial strain induces the segregation of a flat and uniform nonferromagnetic layer with antiferromagnetic (AFM) character at the top surface of a ferromagnetic (FM) layer, the whole film being chemical and structurally homogeneous at room temperature. For different substrates and growth conditions the tetragonality of LCMO at room temperature, defined as τ = |c – a|/a, is the driving force for a phase coexistence above an approximate critical value of τC ≈ 0.024. Theoretical calculations prove that the increased tetragonality changes the energy balance of the FM and AFM ground states in strained LCMO, enabling the formation of magnetically inhomogeneous states. This work gives the key evidence that opens a new route to synthesize strain-induced exchanged-biased FM–AFM bilayers in single thin films, which could serve as building blocks of future spintronic devices.
Identifiersdoi: 10.1021/nl503834b
issn: 1530-6984
e-issn: 1530-6992
Appears in Collections:(ICMA) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.