Growth mode, magnetic and magneto-optical properties of pulsed-laser-deposited Au/Co/Au(111) trilayers

Abstract : The growth mode, magnetic and magneto-optical properties of epitaxial Au/Co/Au(111) ultrathin trilayers grown by pulsed-laser deposition (PLD) under ultra-high vacuum are presented. Sapphire wafers buffered with a single-crystalline Mo(110) bilayer were used as substrates. Owing to PLD-induced interfacial intermixing at the lower Co/Au(111) interface, a layer-by-layer growth mode is promoted. Surprisingly, despite this intermixing, ferromagnetic behavior is found at room temperature for coverings starting at 1 atomic layer (AL). The films display perpendicular magnetization with anisotropy constants reduced by 50\% compared to TD-grown or electrodeposited films, and with a coercivity more than one order of magnitude lower ($\lesssim$ 5 mT). The magneto-optical (MO) response in the low Co thickness range is dominated by Au/Co interface contributions. For thicknesses starting at 3 AL Co, the MO response has a linear dependence with the Co thickness, indicative of a continuous-film-like MO behavior.
Complete list of metadatas

Cited literature [26 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00377119
Contributor : Olivier Fruchart <>
Submitted on : Monday, April 20, 2009 - 11:33:07 PM
Last modification on : Wednesday, February 13, 2019 - 10:06:05 AM
Long-term archiving on : Thursday, June 10, 2010 - 9:16:11 PM

Files

coauco-hal.pdf
Files produced by the author(s)

Identifiers

Collections

NEEL | CNRS | UGA

Citation

César Clavero, Alfonso Cebollada, G. Armelles, Olivier Fruchart. Growth mode, magnetic and magneto-optical properties of pulsed-laser-deposited Au/Co/Au(111) trilayers. Journal of Magnetism and Magnetic Materials, Elsevier, 2010, 322, pp.647. ⟨10.1016/j.jmmm.2009.10.032⟩. ⟨hal-00377119⟩

Share

Metrics

Record views

466

Files downloads

197