Fe/Si(001) Ferromagnetic Layers: Reactivity, Local Atomic Structure and Magnetism
- National Institute of Materials Physics, Atomistilor 105bis, 077125 Magurele-Ilfov (Romania)
Ultrathin ferromagnetic Fe layers on Si(001) have recently been synthesized using the molecular beam epitaxy (MBE) technique, and their structural and magnetic properties, as well as their interface reactivity have been investigated. The study was undertaken as function of the amount of Fe deposited and of substrate temperature. The interface reactivity was characterized by Auger electron spectroscopy (AES). The surface structure was characterized by low-energy electron diffraction (LEED). The magnetism was investigated by magneto-optical Kerr effect (MOKE). A higher deposition temperature stabilizes a better surface ordering, but it also enhances Fe and Si interdiffusion and it therefore decreases the magnetism. Despite the rapid disappearance of the long range order with Fe deposition at room temperature, the material exhibits a significant uniaxial in-plane magnetic anisotropy. For the Fe deposition performed at high temperature (500 deg. C), a weak ferromagnetism is still observed, with saturation magnetization of about 10% of the value obtained previously. MOKE studies allowed inferring the main properties of the distinct formed layers.
- OSTI ID:
- 21611729
- Journal Information:
- AIP Conference Proceedings, Vol. 1387, Issue 1; Conference: TIM-10: Physics conference, Timisoara (Romania), 25-27 Nov 2010; Other Information: DOI: 10.1063/1.3647075; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Morphology and magnetic properties of Fe/Au(001) ultrathin films: A HRLEED and SMOKE study. [HRLEED (high-resolution low-energy electron diffractometer); SMOKE (surface magneto-optic Kerr effect)]
Polar Kerr-effect observation of perpendicular surface anisotropy for ultrathin ferromagnetic films: Fcc Fe/Cu(100)
Related Subjects
ANISOTROPY
AUGER ELECTRON SPECTROSCOPY
ELECTRON DIFFRACTION
FERROMAGNETIC MATERIALS
FERROMAGNETISM
INTERFACES
IRON
KERR EFFECT
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
MOLECULAR BEAM EPITAXY
SILICON
SUBSTRATES
SURFACES
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
DIELECTRIC PROPERTIES
DIFFRACTION
ELECTRICAL PROPERTIES
ELECTRON SPECTROSCOPY
ELEMENTS
EPITAXY
MAGNETIC MATERIALS
MAGNETISM
MATERIALS
METALS
PHYSICAL PROPERTIES
SCATTERING
SEMIMETALS
SPECTROSCOPY
TRANSITION ELEMENTS