Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer

P. A. A. van der Heijden; P. J. H. Bloemen; J. M. Metselaar; R. M. Wolf; J. M. Gaines; J. T. W. M. van Eemeren; P. J. van der Zaag; W. J. M. de Jonge

doi:10.1103/PhysRevB.55.11569

Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer

P. A. A. van der Heijden, P. J. H. Bloemen, J. M. Metselaar, R. M. Wolf, J. M. Gaines, J. T. W. M. van Eemeren, P. J. van der Zaag, W. J. M. de Jonge

Onderzoeksoutput: Article › Academic › peer review

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The magnetic interlayer coupling between two magnetic layers separated by an insulator was investigated on Co0.2Fe2.8O4/Fe3O4/MgO/Fe3O4 samples grown by means of molecular beam epitaxy on (001) MgAl2O4 substrates. The samples were designed to observe interlayer coupling of either sign. Hysteresis loop measurements show that the Fe3O4 layers are ferromagnetically coupled in the thickness range 0–45 nm MgO. Below a MgO spacer thickness of 1.3 nm, the coupling strength increases drastically with decreasing MgO thickness and is ascribed to the existence of ferromagnetic bridges through the MgO spacer. The small ferromagnetic coupling above 1.3 nm seems to arise from a magnetostatic coupling due to correlated interface irregularities.

Originele taal-2	English
Pagina's (van-tot)	11569-11575
Aantal pagina's	7
Tijdschrift	Physical Review B
Volume	55
Nummer van het tijdschrift	17
DOI's	https://doi.org/10.1103/PhysRevB.55.11569
Status	Published - 1997
Extern gepubliceerd	Ja

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Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer
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@article{370dbc4fedc340599d8219e0cbc5c0a9,

title = "Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer",

abstract = "The magnetic interlayer coupling between two magnetic layers separated by an insulator was investigated on Co0.2Fe2.8O4/Fe3O4/MgO/Fe3O4 samples grown by means of molecular beam epitaxy on (001) MgAl2O4 substrates. The samples were designed to observe interlayer coupling of either sign. Hysteresis loop measurements show that the Fe3O4 layers are ferromagnetically coupled in the thickness range 0–45 nm MgO. Below a MgO spacer thickness of 1.3 nm, the coupling strength increases drastically with decreasing MgO thickness and is ascribed to the existence of ferromagnetic bridges through the MgO spacer. The small ferromagnetic coupling above 1.3 nm seems to arise from a magnetostatic coupling due to correlated interface irregularities. ",

author = "\{van der Heijden\}, \{P. A. A.\} and Bloemen, \{P. J. H.\} and Metselaar, \{J. M.\} and Wolf, \{R. M.\} and Gaines, \{J. M.\} and \{van Eemeren\}, \{J. T. W. M.\} and \{van der Zaag\}, \{P. J.\} and \{de Jonge\}, \{W. J. M.\}",

year = "1997",

doi = "10.1103/PhysRevB.55.11569",

language = "English",

volume = "55",

pages = "11569--11575",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "AMER PHYSICAL SOC",

number = "17",

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TY - JOUR

T1 - Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer

AU - van der Heijden, P. A. A.

AU - Bloemen, P. J. H.

AU - Metselaar, J. M.

AU - Wolf, R. M.

AU - Gaines, J. M.

AU - van Eemeren, J. T. W. M.

AU - van der Zaag, P. J.

AU - de Jonge, W. J. M.

PY - 1997

Y1 - 1997

N2 - The magnetic interlayer coupling between two magnetic layers separated by an insulator was investigated on Co0.2Fe2.8O4/Fe3O4/MgO/Fe3O4 samples grown by means of molecular beam epitaxy on (001) MgAl2O4 substrates. The samples were designed to observe interlayer coupling of either sign. Hysteresis loop measurements show that the Fe3O4 layers are ferromagnetically coupled in the thickness range 0–45 nm MgO. Below a MgO spacer thickness of 1.3 nm, the coupling strength increases drastically with decreasing MgO thickness and is ascribed to the existence of ferromagnetic bridges through the MgO spacer. The small ferromagnetic coupling above 1.3 nm seems to arise from a magnetostatic coupling due to correlated interface irregularities.

AB - The magnetic interlayer coupling between two magnetic layers separated by an insulator was investigated on Co0.2Fe2.8O4/Fe3O4/MgO/Fe3O4 samples grown by means of molecular beam epitaxy on (001) MgAl2O4 substrates. The samples were designed to observe interlayer coupling of either sign. Hysteresis loop measurements show that the Fe3O4 layers are ferromagnetically coupled in the thickness range 0–45 nm MgO. Below a MgO spacer thickness of 1.3 nm, the coupling strength increases drastically with decreasing MgO thickness and is ascribed to the existence of ferromagnetic bridges through the MgO spacer. The small ferromagnetic coupling above 1.3 nm seems to arise from a magnetostatic coupling due to correlated interface irregularities.

U2 - 10.1103/PhysRevB.55.11569

DO - 10.1103/PhysRevB.55.11569

M3 - Article

SN - 0163-1829

VL - 55

SP - 11569

EP - 11575

JO - Physical Review B

JF - Physical Review B

IS - 17

ER -

Interlayer coupling between Fe3O4 layers separated by an insulating nonmagnetic MgO layer

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