TU Darmstadt / ULB / TUbiblio

Tailoring magnetic frustration in strained epitaxial FeRh films

Witte, Ralf and Kruk, Robert and Gruner, Markus E. and Brand, Richard A. and Wang, Di and Schlabach, Sabine and Beck, Andre and Provenzano, Virgil and Pentcheva, Rossitza and Wende, Heiko and Hahn, Horst (2016):
Tailoring magnetic frustration in strained epitaxial FeRh films.
93, In: Physical Review B, (10), American Physical Society, p. 104416, ISSN 2469-9950, [Online-Edition: https://doi.org/10.1103/PhysRevB.93.104416],
[Article]

Abstract

We report on a strain-induced martensitic transformation, accompanied by a suppression of magnetic order in epitaxial films of chemically disordered FeRh. X-ray diffraction, transmission electronmicroscopy, and electronic structure calculations reveal that the lowering of symmetry (from cubic to tetragonal) imposed by the epitaxial relation leads to a further, unexpected, tetragonal-to-orthorhombic transition, triggered by a band-Jahn-Teller-type lattice instability. The collapse of magnetic order is a direct consequence of this structural change, which upsets the subtle balance between ferromagnetic nearest-neighbor interactions arising from Fe-Rh hybridization and frustrated antiferromagnetic coupling among localized Fe moments at larger distances.

Item Type: Article
Erschienen: 2016
Creators: Witte, Ralf and Kruk, Robert and Gruner, Markus E. and Brand, Richard A. and Wang, Di and Schlabach, Sabine and Beck, Andre and Provenzano, Virgil and Pentcheva, Rossitza and Wende, Heiko and Hahn, Horst
Title: Tailoring magnetic frustration in strained epitaxial FeRh films
Language: English
Abstract:

We report on a strain-induced martensitic transformation, accompanied by a suppression of magnetic order in epitaxial films of chemically disordered FeRh. X-ray diffraction, transmission electronmicroscopy, and electronic structure calculations reveal that the lowering of symmetry (from cubic to tetragonal) imposed by the epitaxial relation leads to a further, unexpected, tetragonal-to-orthorhombic transition, triggered by a band-Jahn-Teller-type lattice instability. The collapse of magnetic order is a direct consequence of this structural change, which upsets the subtle balance between ferromagnetic nearest-neighbor interactions arising from Fe-Rh hybridization and frustrated antiferromagnetic coupling among localized Fe moments at larger distances.

Journal or Publication Title: Physical Review B
Volume: 93
Number: 10
Publisher: American Physical Society
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Joint Research Laboratory Nanomaterials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 21 Jul 2017 11:16
Official URL: https://doi.org/10.1103/PhysRevB.93.104416
Identification Number: doi:10.1103/PhysRevB.93.104416
Funders: We acknowledge funding by the Deutsche Forschungsgemeinschaft via HA1344/28-1, TRR 80 and SPP 1599.
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)

View Item View Item