Interface magnetism

Contact

Dr. Kay Potzger
Project group leader
Tel.: 0351-260-3244, 2411
E-Mail: k.potzger@hzdr.de


Group members

Dr. Rantej Bali

Joao Cabaco


Former group members

Arno Wendler
Shadab Anwar
Serhii Sorokin
Hamza Cansever
Alexander Schmeink
Jonathan Ehrler
Thu Trang Trinh

Dr. Maciej Oskar Liedke
Dr. Anna Semisalova
Naren Srinivasan

Alireza Heidarian
Alevtina Smekhova
Julius Beck

Oguz Yildirim
Steffen Cornelius
Camilo Otalora

Daniel Blaschke
Maik Butterling
Nico Spahn
Falk Meutzner
Armin Haase

Tim Andrae
Kerstin Bernert
Nikolas Blum
Marcel Höwler

Tina Nestler
Julia Osten
Artem Shalimov
Georg Talut
Gufei Zhang
Shengqiang Zhou


Treffen

-FWIN-G -Treffen: üblicherweise donnerstags um 14 Uhr


Downloads

PREM (Preisach Simulationen)

MBE Probenblatt

Weitere Anleitungen für MBE: O:\Labs\MBE_712_108_108a


Vorlesungen

-Magnetische Materialsysteme, TUBA Freiberg, Sommersemester

Magnetic Multilayers

Key investigator

Dr. M. Liedke

 

Summary

Ion beams can induce several kinds of structures at the surface of solids. Those are either point-like defects, which can alter the electronic or magnetic properties of the surface or morphological changes such as self organized ordered ripples induced by ion beam erosion. In-situ deposition of a thin metallic layer onto such a surface can influence its magnetic properties, e.g. magnetic anisotropy. The effects are investigated mainly for oxide/metal interfaces.

Figures

Example for a magnetic film exhibiting two independent magnetic anisotropies. The uinidirectional (exchange-bias) anisotropy can be setup in a desired direction with respect to the uniaxial ripple induced anisotropy.

Ripple I (a) Microscopic image of an exchange-bias film deposited on a substrate with self-organized ripples

(c) TEM cross section

Ripple II Magnetic hysteresis curves recorded at two different orientations of both anisotropy contributions.

Left: 1°

Right: 86°

Publications:

Interlayer exchange coupling of Fe/Cr/Fe thin films on rippled substrates

M. Koerner, K. Lenz, M. O. Liedke, T. Strache, A. Muecklich, A. Keller, S. Facsko, and J. Fassbender

Phys. Rev. B 80, 214401 (2009).

Introducing artificial length scales to tailor magnetic properties

J. Fassbender, T. Strache, M. O. Liedke, D. Marko, S. Wintz, K. Lenz, A. Keller, S. Facsko, I. Moench,and J McCord

New J. Phys. 11, 125002 (2009).

Induced anisotropies in exchange-coupled systems on rippled substrates

M. O. Liedke, B. Liedke, A. Keller, B. Hillebrands, A. Muecklich, S. Facsko, and J. Fassbender

Phys. Rev. B 75, 220407 (2007).