Tkach, Alexander ; Baghaie Yazdi, Mehrdad ; Foerster, Michael ; Büttner, Felix ; Vafaee, Mehran ; Fries, Maximilian ; Kläui, Mathias (2015)
Magnetoelectric properties of epitaxial Fe3O4 thin films on (011) PMN-PT piezosubstrates.
In: Physical Review B, 91 (2)
doi: 10.1103/PhysRevB.91.024405
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We determine the magnetic and magnetotransport properties of 33 nm thick Fe3O4 films epitaxially deposited by rf-magnetron sputtering on unpoled (011) [PbMg1/3Nb2/3O3]0.68−[PbTiO3]0.32 (PMN-PT) substrates. The magnetoresistance (MR), as well as the magnetization reversal, strongly depend on the in-plane crystallographic direction of the epitaxial (011) Fe3O4 film and strain. When the magnetic field is applied along [100], the magnetization loops are slanted and the sign of the longitudinal MR changes from positive to negative around the Verwey transition at 125 K on cooling. Along the [011¯] direction, the loops are square shaped and the MR is negative above the switching field across the whole temperature range, just increasing in absolute value when cooling from 300 K to 150 K. The value of the MR is found to be strongly affected by poling the PMN-PT substrate, decreasing in the [100] direction and slightly increasing in the [011¯] direction upon poling, which results in a strained film.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2015 |
| Autor(en): | Tkach, Alexander ; Baghaie Yazdi, Mehrdad ; Foerster, Michael ; Büttner, Felix ; Vafaee, Mehran ; Fries, Maximilian ; Kläui, Mathias |
| Art des Eintrags: | Bibliographie |
| Titel: | Magnetoelectric properties of epitaxial Fe3O4 thin films on (011) PMN-PT piezosubstrates |
| Sprache: | Englisch |
| Publikationsjahr: | 7 Januar 2015 |
| Verlag: | APS Publications |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Physical Review B |
| Jahrgang/Volume einer Zeitschrift: | 91 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1103/PhysRevB.91.024405 |
| Kurzbeschreibung (Abstract): | We determine the magnetic and magnetotransport properties of 33 nm thick Fe3O4 films epitaxially deposited by rf-magnetron sputtering on unpoled (011) [PbMg1/3Nb2/3O3]0.68−[PbTiO3]0.32 (PMN-PT) substrates. The magnetoresistance (MR), as well as the magnetization reversal, strongly depend on the in-plane crystallographic direction of the epitaxial (011) Fe3O4 film and strain. When the magnetic field is applied along [100], the magnetization loops are slanted and the sign of the longitudinal MR changes from positive to negative around the Verwey transition at 125 K on cooling. Along the [011¯] direction, the loops are square shaped and the MR is negative above the switching field across the whole temperature range, just increasing in absolute value when cooling from 300 K to 150 K. The value of the MR is found to be strongly affected by poling the PMN-PT substrate, decreasing in the [100] direction and slightly increasing in the [011¯] direction upon poling, which results in a strained film. |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Dünne Schichten |
| Hinterlegungsdatum: | 21 Apr 2015 09:33 |
| Letzte Änderung: | 12 Jan 2019 21:18 |
| PPN: | |
| Sponsoren: | This work was funded by the EU's 7th Framework Program IFOX (NMP3-LA-2010 246102), the Graduate School of Excellence MAINZ (GSC 266 Mainz), the German Science Foundation (DFG), and the ERC (2007-Stg 208162)., A.T. acknowledges also funds by FEDER through Programa Operacional Factores de Competitividade–COMPETE and national funds through FCT–Fundação para aCiência e Tecnologia within the CICECO project FCOMP-01-0124-FEDER-037271(FCT Ref. PEst-C/CTM/LA0011/2013, And A.T. acknowledges also independent researcher grant IF/00602/2013. |
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