Self-assembled Mn5Ge3 nanomagnets close to the surface and deep inside a Ge1-xMnx epilayer

Lechner, R. T.; Holý, V.; Ahlers, S.; Bougeard, D.; Stangl, J.; Trampert, A.; Navarro-Quezada, A.; Bauer, G.
July 2009
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p023102
Academic Journal
Under defined growth conditions ferromagnetic hexagonal Mn5Ge3 precipitates are formed in cubic Ge1-xMnx epilayers. To study the topotaxial relationship of these nanomagnets we perform x-ray diffraction experiments in coplanar as well as in grazing incidence geometries at synchrotron sources. Additionally, to the well defined topotaxial relation derived for buried nanomagnets deep within the Ge layer, we found an additional class of Mn5Ge3 precipitates very close to the surface, with larger inclusion diameter and several different crystallographic orientations with respect to the buried ones.


Related Articles

  • Magnetic vortex oscillator driven by d.c. spin-polarized current. Pribiag, V. S.; Krivorotov, I. N.; Fuchs, G. D.; Braganca, P. M.; Ozatay, O.; Sankey, J. C.; Ralph, D. C.; Buhrman, R. A. // Nature Physics;Jul2007, Vol. 3 Issue 7, p498 

    Transfer of angular momentum from a spin-polarized current to a ferromagnet provides an efficient means to control the magnetization dynamics of nanomagnets. A peculiar consequence of this spin torque, the ability to induce persistent oscillations in a nanomagnet by applying a d.c. current, has...

  • Interface roughness effects in the giant magnetoresistance in magnetic multilayers. Barnas, J.; Palasantzas, G. // Journal of Applied Physics;10/15/1997, Vol. 82 Issue 8, p3950 

    Analyzes in-plane electronic transport in thin layered magnetic structures composed of two ferromagnetic films separated by a nonmagnetic spacer. Role of interface roughness in the giant magnetoresistance; Application of self-affine interfaces described by the k-correlation model.

  • The New Macromolecular Crystallography Stations At MAX-lab: The MAD Station. Ursby, Thomas; Mammen, Christian B.; Cerenius, Yngve; Svensson, Christer; Sommarin, Bengt; Fodje, Michel N.; Kvick, Åke; Logan, Derek T.; Als-Nielsen, Jens; Thunnissen, Marjolein M. G. M.; Larsen, Sine; Liljas, Anders; Warwick, T. // AIP Conference Proceedings;2004, Vol. 705 Issue 1, p1241 

    A new beamline, Cassiopeia, at MAX II is about to come into operation. It consists of an energy-tunable station and four side stations intended for macromolecular crystallography. The X-ray source is a 3.5 T superconducting multipole wiggler installed in the 1.5 GeV MAX II storage ring. The...

  • Aharonov-Bohm oscillation of resistance observed in a ferromagnetic Fe-Ni nanoring. Kasai, S.; Niiyama, T.; Saitoh, E.; Miyajima, H. // Applied Physics Letters;7/8/2002, Vol. 81 Issue 2, p316 

    The magnetoresistance of a ferromagnetic Fe-Ni nanoring with 420 nm in inner diameter and 500 nm in outer diameter was measured at very low temperatures below 100 mK. When a magnetic field is applied to the ring, the magnetoresistance exhibits oscillations whose period varies according to the...

  • Correlation properties of the stochastic magnetic structure of ultradispersed ferromagnetic materials. Ivanov, A. A.; Orlov, V. A.; Patrushev, G. O. // Physics of the Solid State;Aug99, Vol. 41 Issue 8, p1311 

    The properties of the stochastic magnetic structure of ultradispersed ferromagnetic materials are studied. The correlation coefficients of the magnetization of a magnetic material are calculated for various types of chaos in the anisotropy field. The effects of different types of disorder on the...

  • Theory of localized spin wave modes at surface steps on ferromagnetic films. Jiang, L. J.; Cottam, M. G. // Journal of Applied Physics;4/15/1999 Part 2B of 2, Vol. 85 Issue 8, p5495 

    Presents information on a study which investigated the spin dynamics in low-dimensional Heisenberg ferromagnetic nanostructures. Spin wave spectra of magnetic films; Numerical results; Conclusions.

  • Tumbling motion yielding fast displacements of synthetic antiferromagnetic nanoparticles for biological applications. Courcier, T.; Joisten, H.; Sabon, P.; Leulmi, S.; Dietsch, T.; Faure-Vincent, J.; Auffret, S.; Dieny, B. // Applied Physics Letters;8/29/2011, Vol. 99 Issue 9, p093107 

    Synthetic antiferromagnetic micro/nanoparticles usable for biological applications were recently developed using a top-down approach, made of alternating NiFe layers and non magnetic Ru spacers. We describe here different types of motions of magnetic particles chains, controlled either by field...

  • Reconfigurable ferromagnetic resonance properties in nanostructured multilayers. Zhang, M.; Nozaki, Y.; Matsuyama, K. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08G307 

    Ferromagnetic resonance properties in nanostructured multilayers are numerically investigated for the application of spintronics devices. The resonance frequency can be shifted by switching the magnetization state between a parallel and an antiparallel configuration. These remanent states are...

  • Determination of the Nanoparticle Sizes Using AFM Images and Simulation of their Magnetooptical Properties. Zlenko, V. A.; Demydenko, M. H.; Protsenko, S. I. // Journal of Nano- & Electronic Physics;2013, Vol. 5 Issue 3, p03055-1 

    This paper describes the geometric models and presents the calculation results of the actual sizes of Ni and Co anoparticles on the amorphous Si3N4 / Si substrates obtained by thermal annealing of thin metal films using the data of atomic force microscopy. Results were used in the simulation of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics