Journal Article

FZJ-2017-06700

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Atomic-scale structure and formation of antiphase boundaries in α-Li 0.5 Fe 2.5 O 4 thin films on MgAl 2 O 4 (001) substrates

Mi, S.-B. (Corresponding author) ; Zhang, R.-Y. ; Lu, L.FZJ* ; Liu, M. ; Wang, H. ; Jia, C.-L.FZJ*

2017
Elsevier Science Amsterdam [u.a.]

This record in other databases:    

Please use a persistent id in citations: doi:10.1016/j.actamat.2017.01.022

Abstract: The occurrence of antiferromagnetic coupling at antiphase domain boundaries (APBs) of ferromagnetic materials holds potential applications for room-temperature spintronic devices. Here, we report formation mechanism and atomic-scale structure properties of APBs in α-Li0.5Fe2.5O4 thin films on MgAl2O4 (001) substrates investigated by means of aberration-corrected scanning transmission electron microscopy. The APBs in the α-Li0.5Fe2.5O4 films are either conservative or non-conservative. Across the APBs the oxygen sublattice in α-Li0.5Fe2.5O4 is maintained, while the stacking sequence of the cation sublattice is interrupted. The propagation of APBs is found to occur in a complex way within the ferromagnetic films, including the dissociation of APBs and the formation of kinks. Importantly, the density of APBs can be tuned by controlling the thickness of the α-Li0.5Fe2.5O4 films since the APBs bound interfacial dislocations contributing to film-substrate strain relaxation. Our results evidence that the nano-scale APBs in the α-Li0.5Fe2.5O4 films are controllable and stable, which could be promising candidates for applications in nano-spintronic devices.

---

Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2017

---

Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---