Surface magneto-optical studies of ferromagnetic films

Conference · Sun Feb 01 04:00:00 EST 1987

OSTI ID:6376337

Bader, S D; Moog, E R

The magneto-optic Kerr effect is used to characterize the magnetic properties of epitaxial ferromagnetic films whose thickness includes the monolayer range. The studies are performed in ultra-high vacuum with LEED-Auger auxiliary characterizations to monitor the epitaxy and growth-mode behavior. Results are summarized for Fe deposited on Au(100) and Cu(100) to stabilize the bcc and fcc Fe phases, respectively. The most striking finding is the observation of a new, metastable ferromagnetic state at the surface of paramagnetic fcc-Fe/Cu(100) above room temperature. The observation is discussed in terms of a double minimum in the interlayer surface relaxation (with the expanded state being ferromagnetic and contracted state not) as supported by recent independent LEED measurements.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6376337
• Report Number(s): CONF-870272-5; ON: DE87011491
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
AUGER ELECTRON SPECTROSCOPY
COPPER
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRON SPECTROSCOPY
ELEMENTS
EPITAXY
FERROMAGNETIC MATERIALS
FERROMAGNETISM
FILMS
GOLD
HYSTERESIS
IRON
KERR EFFECT
LAYERS
MAGNETIC MATERIALS
MAGNETISM
MAGNETO-OPTICAL EFFECTS
MATERIALS
METALS
PHYSICAL PROPERTIES
SPECTROSCOPY
SUBSTRATES
TRANSITION ELEMENTS