Magnetostatic coupling in spin valves: Revisiting Neel's formula

Journal Article · Mon May 01 00:00:00 EDT 2000 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.372513· OSTI ID:20216245

Schulthess, T C ^[1]; Butler, W H ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6114 (United States)

We use a numerical, atomistic approach to calculate the magnetostatic coupling in spin valves. In addition to the numerical treatment, the coupling energy is evaluated analytically and it is shown that Neel's formula is accurate to first order in the ratio of roughness amplitude to grain size. We also generalize the formula so that it can be applied to systems such as Py/Co/Cu/Co/Py spin valves that have complex ferromagnetic layers. (c) 2000 American Institute of Physics.

• OSTI ID: 20216245
• Journal Information: Journal of Applied Physics, Vol. 87, Issue 9; Other Information: PBD: 1 May 2000; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COBALT
COPPER
LAYERS
GRAIN SIZE
FERROMAGNETIC MATERIALS
ROUGHNESS
MAGNETIZATION
CHARGE DISTRIBUTION
INTERFACES
THEORETICAL DATA