TITLE

Mn3O4 precipitates in laser-ablated manganite films

AUTHOR(S)
Higuchi, T.; Yajima, T.; Kourkoutis, L. Fitting; Hikita, Y.; Nakagawa, N.; Muller, D. A.; Hwang, H. Y.
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/27/2009, Vol. 95 Issue 4, p043112
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Precipitates formed during the growth of manganite thin films by pulsed laser deposition have been an obstacle for fabricating high quality devices incorporating these ferromagnetic metals. In order to analyze the nature of these precipitates, we have investigated their spectroscopic and structural properties by scanning transmission electron microscopy. For LaMnO3 films, crystallites of Mn3O4 are found to segregate out from stoichiometric films to accommodate a net cation off-stoichiometry during growth. By tuning the laser spot conditions, these precipitates can be eliminated.
ACCESSION #
43494193

 

Related Articles

  • Structural variability in La0.5Sr0.5TiO3±δ thin films. Gu, Meng; Dearden, Craig R.; Song, Chengyu; Browning, Nigel D.; Takamura, Yayoi // Applied Physics Letters;12/26/2011, Vol. 99 Issue 26, p261907 

    La0.5Sr0.5TiO3±δ films were grown by pulsed laser deposition and characterized using aberration-corrected scanning transmission electron microscopy. Single-phase films with low resistivity and a near Ti3+ valence state were stabilized by a large concentration of oxygen vacancies under...

  • The effect of matrix and substrate on the coercivity and blocking temperature of self-assembled Ni nanoparticles. Abiade, Jeremiah T.; Oh, Sang Ho; Kumar, Dhananjay; Varela, Maria; Pennycook, Stephen; Guo, Haizhong; Gupta, Arunava; Sankar, Jagannathan // Journal of Applied Physics;Oct2008, Vol. 104 Issue 7, p073910 

    We have shown that the magnetic properties of nanoparticles may be tuned from superparamagnetic to ferromagnetic by changing the substrate or thin film matrix in which they are embedded. Nickel nanoparticles were embedded into alumina, titanium nitride, and cerium oxide matrices on both silicon...

  • Strain effects and microstructure of epitaxial manganite thin films and heterostructures. Wiedenhorst, B.; Hofener, C. // Applied Physics Letters;6/14/1999, Vol. 74 Issue 24, p3636 

    Describes the growth of epitaxial La[sub 2/3]Sr[sub 1/3]MnO[sub 3] and La[sub 2/3]Ba[sub 1/3]MnO[sub 3] thin films as well as La[sub 2/3]Ba[sub 1/3]MnO[sub 3]/SrTiO[sub 3] heterostructures by pulsed-laser deposition. Analysis of the manganite thin films' microstructure by x-ray diffraction and...

  • Stoichiometry and thickness variation of YBa[sub 2]Cu[sub 3]O[sub 7-x] in pulsed laser.... Trajanovic, Z.; Choopun, S. // Applied Physics Letters;6/23/1997, Vol. 70 Issue 25, p3461 

    Examines the dependence of the lateral thickness and stoichiometry of YBa[sub 2]Cu[sub 3]O[sub 7-x] deposited by shadow mask pulsed laser technique on the background oxygen pressure. Role of yttrium atoms in limiting lateral stoichiometric uniformity; Improvement of thickness uniformity across...

  • Properties of ZnS thin films prepared by 248-nm pulsed laser deposition. McLaughlin, M.; Sakeek, H.F. // Applied Physics Letters;10/4/1993, Vol. 63 Issue 14, p1865 

    Focuses on the properties of zinc sulfide (ZnS) thin films prepared from 248-nanometer pulsed laser deposition (PLD). List of deposition techniques; Potentials of PLD; Ways to determine the stoichiometric analysis of the film composition.

  • Interplay of lattice strain and spin-polarization in ferromagnetic–insulator–ferromagnetic thin films: La[sub 0.7]Ca[sub 0.3]MnO[sub 3]/LaAlO[sub 3]/La[sub 0.7]Sr[sub 0.3]MnO[sub 3]. Khatua, Sanghamitra; Kundaliya, Darshan C.; John, J.; Rayaprol, S.; Shinde, S. R.; Kuberkar, D. G.; Pinto, R.; Malik, S. K. // Journal of Applied Physics;5/15/2003, Vol. 93 Issue 10, p8203 

    Epitaxial thin films of ferromagnet/insulator/ferromagnet layers La[SUB0.7]Ca[SUB0.3]MnO[SUB3]/LaAlO[SUB3]/La[SUB0.7]Sr[SUB0.3]MnO[SUB3]) of different thickness were fabricated by pulsed laser deposition. Microstructural analysis shows island growth on the thicker film surface. dc magnetization...

  • Structure and magnetic properties of pure and Gd-doped HfO2 thin films. Wendong Wang; Yuanjia Hong; Yu, Minghu; Rout, Bibhudutta; Glass, Gary A.; Jinke Tang // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08M117 

    Pure HfO2 and Gd-doped HfO2 thin films have been grown on different single crystal substrates (silicon, R-Al2O3, and LaAlO3) by pulsed laser deposition. X-ray diffraction (XRD) patterns show that the pure HfO2 thin films are of single monoclinic phase. Gd-doped HfO2 films have the same XRD...

  • Room-Temperature Ferromagnetic Ordering in Mn-Doped ZnO Thin Films Grown by Pulsed Laser Deposition. Shim, W. Y.; Jeon, K. A.; Lee, K. I.; Lee, S. Y.; Jung, M. H.; Lee, W. Y. // Journal of Electronic Materials;Apr2006, Vol. 35 Issue 4, p635 

    The ferromagnetic ordering in Mn-doped ZnO thin films grown by pulsed laser deposition (PLD) as a function of oxygen pressure and substrate temperature has been investigated. Room-temperature ferromagnetic behaviors in the Mn-doped ZnO films grown at 700°C and 800°C under 10-1 torr in...

  • Pulsed laser evaporation of Cd3As2. Dubowski, J. J.; Williams, D. F. // Applied Physics Letters;1984, Vol. 44 Issue 3, p339 

    A pulsed Nd:yttrium aluminum garnet (YAG) laser, power density 4-10×107 W/cm2, was used to prepare thin films of Cd3As2 by evaporation onto room-temperature substrates. The net deposition rate was 105 Å/s. The film microstructure was composed of amorphous agglomerates, 600-2000 Å in...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics