title: Hyperfine and magnetic properties of Fe-Cu clusters and Fe precipitates embedded in a Cu matrix.
abstract: Using the first-principles real-space linear muffin-tin orbital method within the atomic sphere approximation (RS-LMTO-ASA) we study hyperfine and local magnetic properties of substituted pure Fe and Fe-Cu clusters in an fcc Cu matrix. Spin and orbital contributions to magnetic moments, hyperfine fields and the Mössbauer isomer shifts at the Fe sites in Fe precipitates and Fe-Cu alloy clusters of sizes up to 60 Fe atoms embedded in the Cu matrix are calculated and the influence of the local environment on these properties is discussed.
authors.affiliation: Faculdade de Física, Universidade Federal do Pará, 66075-110, Belém, PA, Brazil.
authors.forename: A B
authors.initials: AB
authors.lastname: Klautau
authors.forename: L M
authors.initials: LM
authors.lastname: Socolovsky
authors.forename: R N
authors.initials: RN
authors.lastname: Nogueira
authors.forename: H M
authors.initials: HM
authors.lastname: Petrilli