Ferromagnetism in Mn-doped ZnO due to impurity bands

K. W. Nielsen; J. B. Philipp; M. Opel; A. Erb; J. Simon; L. Alff; R. Gross

doi:10.1016/j.spmi.2004.12.008

Ferromagnetism in Mn-doped ZnO due to impurity bands

K. W. Nielsen, J. B. Philipp, M. Opel, A. Erb, J. Simon, L. Alff, R. Gross

Research output: Contribution to journal › Conference article › peer-review

19 Scopus citations

Abstract

We have prepared quasi-homoepitaxial Zn_0.95Mn _0.05O-films on ZnO substrates by pulsed laser deposition. The thin films were characterized by in situ RHEED during growth, X-ray diffraction and reflectometry, as well as transmission electron microscopy (TEM). The magnetic properties have been analyzed by SQUID magnetometry and by measuring the anomalous Hall effect. By varying the growth conditions (substrate temperature: 200-600 ^°C, deposition atmospheres: Ar, O₂) a different concentration of impurities has been generated. Our results show that the films are electron doped and exhibit a ferromagnetic coupling that depends on the impurity concentration.

Original language	English
Pages (from-to)	327-332
Number of pages	6
Journal	Superlattices and Microstructures
Volume	37
Issue number	5
DOIs	https://doi.org/10.1016/j.spmi.2004.12.008
State	Published - May 2005
Externally published	Yes
Event	Spintronics: Spin Injection, Transport, and Manipulation - Bochum, Germany Duration: 11 Oct 2004 → 12 Oct 2004

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title = "Ferromagnetism in Mn-doped ZnO due to impurity bands",

abstract = "We have prepared quasi-homoepitaxial Zn0.95Mn 0.05O-films on ZnO substrates by pulsed laser deposition. The thin films were characterized by in situ RHEED during growth, X-ray diffraction and reflectometry, as well as transmission electron microscopy (TEM). The magnetic properties have been analyzed by SQUID magnetometry and by measuring the anomalous Hall effect. By varying the growth conditions (substrate temperature: 200-600 °C, deposition atmospheres: Ar, O2) a different concentration of impurities has been generated. Our results show that the films are electron doped and exhibit a ferromagnetic coupling that depends on the impurity concentration.",

author = "Nielsen, {K. W.} and Philipp, {J. B.} and M. Opel and A. Erb and J. Simon and L. Alff and R. Gross",

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TY - JOUR

T1 - Ferromagnetism in Mn-doped ZnO due to impurity bands

AU - Nielsen, K. W.

AU - Philipp, J. B.

AU - Opel, M.

AU - Erb, A.

AU - Simon, J.

AU - Alff, L.

AU - Gross, R.

PY - 2005/5

Y1 - 2005/5

N2 - We have prepared quasi-homoepitaxial Zn0.95Mn 0.05O-films on ZnO substrates by pulsed laser deposition. The thin films were characterized by in situ RHEED during growth, X-ray diffraction and reflectometry, as well as transmission electron microscopy (TEM). The magnetic properties have been analyzed by SQUID magnetometry and by measuring the anomalous Hall effect. By varying the growth conditions (substrate temperature: 200-600 °C, deposition atmospheres: Ar, O2) a different concentration of impurities has been generated. Our results show that the films are electron doped and exhibit a ferromagnetic coupling that depends on the impurity concentration.

AB - We have prepared quasi-homoepitaxial Zn0.95Mn 0.05O-films on ZnO substrates by pulsed laser deposition. The thin films were characterized by in situ RHEED during growth, X-ray diffraction and reflectometry, as well as transmission electron microscopy (TEM). The magnetic properties have been analyzed by SQUID magnetometry and by measuring the anomalous Hall effect. By varying the growth conditions (substrate temperature: 200-600 °C, deposition atmospheres: Ar, O2) a different concentration of impurities has been generated. Our results show that the films are electron doped and exhibit a ferromagnetic coupling that depends on the impurity concentration.

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U2 - 10.1016/j.spmi.2004.12.008

DO - 10.1016/j.spmi.2004.12.008

M3 - Conference article

AN - SCOPUS:16644364154

SN - 0749-6036

VL - 37

SP - 327

EP - 332

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 5

T2 - Spintronics: Spin Injection, Transport, and Manipulation

Y2 - 11 October 2004 through 12 October 2004

ER -

Ferromagnetism in Mn-doped ZnO due to impurity bands

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