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Hyperfine and magnetic properties of Fe–Cu clusters and Fe precipitates embedded in a Cu matrix

A B Klautau1, L M Socolovsky2, R N Nogueira3,4 and H M Petrilli5

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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.


PACS

71.70.Jp Nuclear states and interactions

75.50.Bb Fe and its alloys

71.15.Ap Basis sets (LCAO, plane-wave, APW, etc.) and related methodology (scattering methods, ASA, linearized methods, etc.)

75.30.Cr Saturation moments and magnetic susceptibilities

64.75.-g Phase equilibria

76.80.+y Mössbauer effect; other γ-ray spectroscopy

Subjects

Soft matter, liquids and polymers

Condensed matter: electrical, magnetic and optical

Dates

Issue 50 (16 December 2009)

Received 29 September 2009

Published 23 November 2009



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