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Titre du document / Document title

Growth of single-phase c-axis aligned La1.2Ca1.8Mn2O7 films on SrTiO3 (001)

Auteur(s) / Author(s)

TIWARI Ashutosh (1) ; NARAYAN J. (1) ; SUDHAKAR N. (2) ; RAJEEV K. P. (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Materials Science and Engineering, North Carolina State University, 2148 Burlington Lab, Raleigh, NC 27695-7916, ETATS-UNIS
(2) Department of Physics, IIT Kanpur, Kanpur 208016, INDE

Résumé / Abstract

We report the growth of single phase, c-axis aligned thin films of La1.2Ca1.8Mn2O7 on SrTiO3 (001) substrates using a controlled pulsed laser deposition method. In this method, constraint of epitaxy is utilized to stabilize the Ruddlesdon-Popper (RP) phase of La1.2Ca1.8Mn2O7. Oxygen ambient pressure and the rate of deposition play a very important role in influencing the epitaxial growth as well as maintaining phase purity of the material. The oxygen pressure inside the deposition chamber was very precisely controlled and varied during the layer-by-layer growth of the film. Films, prepared by our method, show excellent electrical and magnetic characteristics with a sharp metal-insulator transition at TM-1=90 K, closely followed by a magnetic transition at TC=91 K.

Revue / Journal Title

Solid state communications    ISSN  0038-1098   CODEN SSCOA4 

Source / Source

2004, vol. 132, no12, pp. 863-866 [4 page(s) (article)] (19 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1963) (Revue)

Mots-clés anglais / English Keywords

Rare earth compounds

;

Transition element compounds

;

Inorganic compounds

;

Ruddlesdon Popper phase

;

Layer by layer growth

;

Experimental study

;

Quaternary compounds

;

Calcium Manganites

;

Lanthanum Manganites

;

Thin films

;

Phase stability

;

Giant magnetoresistance

;

Magnetic transitions

;

Metal-insulator transition

;

Magnetic properties

;

Deposition rate

;

Epitaxy

;

Pulsed laser deposition

;

Mots-clés français / French Keywords

Lanthanide composé

;

Métal transition composé

;

Composé minéral

;

Phase Ruddlesdon Popper

;

Croissance couche par couche

;

7547G

;

Ca la Mn O

;

La1,2Ca1,8Mn2O7

;

Substrat SrTiO3

;

Etude expérimentale

;

Composé quaternaire

;

Calcium Manganite

;

Lanthane Manganite

;

Couche mince

;

Stabilité phase

;

Magnétorésistance géante

;

Transition magnétique

;

Transition métal isolant

;

Propriété magnétique

;

Vitesse dépôt

;

Epitaxie

;

Dépôt laser pulsé

;

Mots-clés espagnols / Spanish Keywords

Manganito

;

Manganito

;

Velocidad deposición

;

Mots-clés d'auteur / Author Keywords

75.47.-m

;

75.47.Gk

;

75.47.Lx

;

75.70.Ak A. Thin films

;

C. Giant magnetoresistance

;

Localisation / Location

INIST-CNRS, Cote INIST : 10917, 35400012276516.0120

Nº notice refdoc (ud4) : 16291914



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