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Micromagnetic properties of MnAs-on-GaAs(001) films

✍ Scribed by Ploog, K. H. ;Däweritz, L. ;Engel-Herbert, R. ;Hesjedal, T.

Book ID
105363903
Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
565 KB
Volume
203
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Strained MnAs films on GaAs(001) grown by molecular beam epitaxy exhibit unique micro‐magnetic properties due to the strain‐mediated coexistence of hexagonal ferromagnetic α‐MnAs and orthorhombic paramagnetic β‐MnAs arranged in selforganized periodic stripe patterns. To explore the internal structure of the magnetization, which is not accessible by the magnetic imaging techniques AFM and XMCDPEEM, detailed micromagnetic simulations are needed. Otherwise, physically unreasonable models would be developed. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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## Abstract MnAs layers with 45 nm thickness were grown epitaxially on GaAs(001) substrates. Ellipsometry measurements were made in the spectral range 0.045 eV to 6 eV as a function of temperature (between –10 °C and 50 °C) at 70° of incidence. In this way the transition from the hexagonal α‐phase