Skip to Main content Skip to Navigation
Journal articles

Structure and magnetic properties of epitaxial CaFe2O4 thin films

Abstract : CaFe 2 O 4 is a highly anisotropic antiferromagnet reported to display two spin arrangements with up-up-down-down (phase A) and up-down-up-down (phase B) configurations. The relative stability of these phases is ruled by the competing ferromagnetic and antiferromagnetic interactions between Fe 3+ spins arranged in two different environments, but a complete understanding of the magnetic structure of this material does not exist yet. In this study, we investigate epitaxial CaFe 2 O 4 thin films grown on TiO 2 (110) substrates by means of pulsed laser deposition (PLD). Structural characterization reveals the coexistence of two out-of-plane crystal orientations and the formation of three in-plane oriented domains. The magnetic properties of the films, investigated macroscopically as well as locally, including highly sensitive Mössbauer spectroscopy, reveal the presence of just one order parameter showing long-range ordering below T = 185 K and the critical nature of the transition. In addition, a non-zero in-plane magnetization is found, consistent with the presence of uncompensated spins at phase or domain boundaries, as proposed for bulk samples.
Complete list of metadatas
Contributor : Jean Juraszek <>
Submitted on : Friday, November 27, 2020 - 10:49:48 AM
Last modification on : Friday, November 27, 2020 - 3:27:41 PM


Publisher files allowed on an open archive



Silvia Damerio, Pavan Nukala, Jean Juraszek, Pim Reith, Hans Hilgenkamp, et al.. Structure and magnetic properties of epitaxial CaFe2O4 thin films. Npj Quantum Materials, Nature publishing, 2020, 5 (1), ⟨10.1038/s41535-020-0236-2⟩. ⟨hal-02705587⟩



Record views


Files downloads