Epitaxial strain-stabilized hexagonal modifications can occur in many metal
films grown on (100) surfaces of cubic crystals and can have a strong infl
uence on their magnetic properties. The necessary conditions for the format
ion of hcp crystals, identification criteria, examples and implications for
the magnetic properties of thin film systems involving hcp layers are disc
ussed. (C) 1999 Elsevier Science B.V. All rights reserved.