Sputtering growth and characterization of CoFe<inf>2</inf>O<inf>4</inf>-BaTiO<inf>3</inf> nanostructures

N. Dix, V. Skumryev, V. Laukhin, L. Fàbrega, F. Sánchez, J. Fontcuberta

Research output: Contribution to journalArticleResearchpeer-review

20 Citations (Scopus)

Abstract

We report on the sputtering growth and characterization of nanostructures formed by a ferrimagnetic spinel (CoFe2O4) and a ferroelectric perovskite (BaTiO3) on (0 0 1) and (1 1 1) oriented SrTiO3 substrates. We present analysis of the crystal structure (crystal phases and lattice strain) and the surface morphology by X-ray diffractometry and by atomic force microscopy, respectively. Films grown on both substrates display phase segregation, being textured (either (0 0 1) or (1 1 1)) the films deposited at 700 °C and polycrystalline the ones grown at the highest deposition temperature (800 °C). The magnetic easy axis of films grown on SrTiO3(0 0 1) is out-of-plane. It is found that phase separation and island size are depending on the growth conditions and the role of adatom supersaturation during growth is discussed. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)127-131
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume144
DOIs
Publication statusPublished - 25 Nov 2007

Keywords

  • Multiferroics
  • Nanocomposite films
  • Nanostructures
  • Oxides
  • Spinels

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