Artificially modulated chemical order in thin films: A different approach to create ferro/antiferromagnetic interfaces

作者：Saerbeck T^*; Klose F; Lott D; Mankey G J; Lu Z; LeClair P R; Schmidt W; Stampfl A P J; Danilkin S; Yethiraj M; Schreyer A

来源：Physical Review B, 2010, 82(13): 134409.

DOI：10.1103/PhysRevB.82.134409

We report on a unique magnetic exchange interaction in a thin film of FePt3, comprising an artificially created ferromagnetic (FM)/antiferromagnetic (AFM) modulation, but homogeneous chemical composition and epitaxy throughout the film. The chemical order, on the other hand, is modulated resulting in the formation of alternating FM/AFM layers. To determine the existence and form of the magnetic structure within the monostoichiometric thin film, we use a unique combination of polarized neutron reflectometry, x-ray/neutron diffraction, and conventional magnetometry. This artificial stratified AFM/FM FePt3 exhibits a high magnetic exchange bias thus opening up possibilities to study such magnetic phenomena in a perfectly lattice-matched system.

• 出版日期2010-10-6