Structural and magnetic properties of face-centered-cubic Fe films grown on Co(100)

Journal Article · Mon Apr 01 04:00:00 EST 1996 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.361922· OSTI ID:280022

Escorcia-Aparicio, E J; Kawakami, R K; Qiu, Z Q ^[1]

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1. Department of Physics, University of California at Berkeley, Berkeley

A rich variety of magnetic and structural properties have been found in fcc Fe films grown on Cu(100). In order to better comprehend the relation between the magnetic and structural properties of fcc Fe, we investigated fcc Fe films grown by molecular beam epitaxy on fcc Co(100). Structural characterization by low-energy electron diffraction and reflection high-energy electron diffraction indicate that the structural properties of fcc Fe films grown on Co(100) at room temperature are very similar to those of fcc Fe on Cu(100), exhibiting three distinct regions (fct, fcc, and bcc), with characteristic reconstructions at the boundaries. Magnetic measurements with {ital in} {ital situ} surface magneto-optic Kerr effect (SMOKE) reveal in-plane magnetization at room temperature for the three regions. Regions I and III are ferromagnetic, while region II has a small Kerr signal which is constant throughout the region. Cusps in the coercivity of the SMOKE loops are found to correspond to transitions between the three regions. Oxygen absorption experiments performed at room temperature revealed no change in the magnetization of region II, suggesting that the live layers responsible for the magnetic signal in this region are not at the surface. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 280022
• Report Number(s): CONF-951101--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 79; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT
CRYSTAL STRUCTURE
INTERFACE STRUCTURE
IRON
MAGNETIC PROPERTIES
MAGNETO-OPTICAL EFFECTS
MOLECULAR BEAM EPITAXY
SURFACE RECONSTRUCTION
TEMPERATURE DEPENDENCE
THIN FILMS